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Dissertations / Theses on the topic 'Electrochemical cell'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sleightholme, Alice Eleanor Sylvia. "Electrochemical studies of fuel cell catalysts." Thesis, Imperial College London, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.479495.

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2

Green, Claire Louise. "An electrochemical investigation of fuel cell catalysts." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399517.

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3

Iqbal, Z. "Electrochemical modulation of sickle cell haemoglobin polymerisation." Thesis, University College London (University of London), 2008. http://discovery.ucl.ac.uk/1444279/.

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Sickle cell haemoglobin differs from normal haemoglobin by a single amino acid in its chain. This amino acid replacement, from glutamic acid to valine, causes polymerisation of proteins into defined long insoluble fibres with a typical diameter of 21.5 nm. The polymerisation is triggered by the formation of deox haemoglobin from oxyhaemoglobin in low oxygen partial pressures, which results in a conformational change in the secondary structure of the protein. Pathogenesis in sickle cell disease depends on the polymerisation and gelation of deoxygenated HbS molecules. In this work, an electroche

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4

Thobeka, Adonisi. "Electrochemical characterization of platinum based catalysts for fuel cell applications." Thesis, University of the Western Cape, 2012. http://hdl.handle.net/11394/3812.

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Magister Scientiae - MSc<br>Fuel cells convert chemical energy from a fuel into electricity through chemical reaction with oxygen. This possesses some challenges like slow oxygen reduction reaction (ORR), overpotential, and methanol fuel cross over in a direct methanol fuel cell (DMFC). These challenges cause inefficiency and use of higher amounts of the expensive platinum catalyst.Several binary catalysts with better ORR activity have been reported. In this study we investigate the best catalyst with better ORR and MOR performances and lower over-potentials for PEMFC and DMFC applications b

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5

Coignet, Philippe. "Transport-reaction modeling of the impedance response of a fuel cell." Link to electronic thesis, 2004. http://www.wpi.edu/Pubs/ETD/Available/etd-0526104-151500/.

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6

Taama, Wathiq M. "Mass transfer studies in a DEM electrochemical cell." Thesis, University of Newcastle Upon Tyne, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358975.

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7

Aaron, Douglas Scott. "Transport in fuel cells: electrochemical impedance spectroscopy and neutron imaging studies." Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34699.

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Current environmental and energy sustainability trends have instigated considerable interest in alternative energy technologies that exhibit reduced dependence on fossil fuels. The advantages of such a direction are two-fold: reduced greenhouse gas emissions (notably CO2) and improved energy sustainability. Fuel cells are recognized as a potential technology that achieves both of these goals. However, improvements to fuel cell power density and stability must be realized to make them economically competitive with traditional, fossil-based technologies. The work in this dissertation is larg

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8

Vurro, Vito. "Organic electrochemical transistor: a tool for cell tissue monitoring." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/13502/.

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Questa tesi si inserisce nel ramo di ricerca della Bioelettronica organica, in particolare l'obiettivo è quello di monitorare per via elettrica la formazione e la rottura di ricoprimenti e barriere cellulari. Queste sono di particolare importanza dal punto di vista biologico per il loro ruolo di protezione e per l'azione regolatrice nel passaggio di ioni e macromolecole necessarie al benessere dell'organo. Per fare questo sono stati utilizzati gli Organic ElectroChemical Transistor (OECT) basati sul polimero organico biocompatibile PEDOT:PSS. Per poter portare a termine questo lavoro il pri

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9

Stuckey, Philip A. "Kinetic Studies and Electrochemical Processes at Fuel Cell Electrodes." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1322675454.

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10

Palomino, G. N. "Mass transfer and electrowinning in a circulating bed cell." Thesis, University of Exeter, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378239.

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11

Youn, J.-H. "Mass transfer studies for the design of a thin-gap electrolytic cell." Thesis, University of Newcastle Upon Tyne, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384029.

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12

Chen, Peng. "Single cell assays of exocytosis /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3074384.

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13

Vierrath, Severin [Verfasser], and Roland [Akademischer Betreuer] Zengerle. "Morphological and electrochemical investigation of polymer electrolyte fuel cell components." Freiburg : Universität, 2016. http://d-nb.info/1135134081/34.

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14

Lack, Barbara Anne. "Electrochemical studies of gold bioaccumulation by yeast cell wall components." Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1004969.

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Gold, amongst other group 11 metals, was almost certainly one of the first three metals known to man. In addition to the economic importance of the metal, gold has a wide variety of applications in the medical, electrocatalytical and micro-electronics fields. However, the determination of gold ions in solution, with accuracy, precision, sensitivity and selectivity is still an interesting and much debated topic in analytical chemistry. A system whereby gold ions have been successfully detected employing an electrochemical technique, known as stripping voltammetry, has been developed. The electr

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15

Coombs, Helen Victoria. "Application of impedance techniques to the study of living cell monolayers and membranes." Thesis, University of Hertfordshire, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293302.

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16

Khani, Meynaq Mohammad Yaser. "Electrochemical investigations on lipid cubic phases." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-130174.

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Electrochemical Impedance Spectroscopy (EIS) was used to develop a novel methodology for studying ionic interaction with lipids arranged in a lipid cubic phase (LCP). Studying different types of ions, both cations and anions, validated the method. A free-standing LCP membrane was formed between two cell compartments and impedance experiments were carried out in a 2-electrode setup to estimate dielectric properties of the membrane, exposed to the following electrolyte solutions at different concentrations: KCl, CsBr, CaCl2, MgCl2, CsCl, NaCl, NaOAc and NaTryptophan. Two different LCP were used

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17

Rymansaib, Zuhayr. "Printing materials and processes for electrochemical applications." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.715249.

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3D printing has revolutionised traditional manufacturing methods, opening up and distributing design and production of low cost, custom objects to virtually anyone. Tailoring of print material and part geometry allows for the benefits of this technology to reach multiple engineering and scientific fields, given appropriate design. A multidisciplinary approach concerning development of new print materials and methods was undertaken with the aim of further expansion and application of 3D printing towards electrochemical applications. Specific requirements of materials used in this domain, such a

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18

Shan, Xi. "Hydrogen Storage for Micro-fabricated Electrochemical Devices." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1089864469.

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19

Jaouen, Frédéric. "Electrochemical characterisation of porous cathodes in the polymer electrolyte fuel cell." Doctoral thesis, KTH, Chemical Engineering and Technology, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3498.

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<p>Polymer electrolyte fuel cells (PEFC) convert chemicalenergy into electrical energy with higher efficiency thaninternal combustion engines. They are particularly suited fortransportation applications or portable devices owing to theirhigh power density and low operating temperature. The latter ishowever detrimental to the kinetics of electrochemicalreactions and in particular to the reduction of oxygen at thecathode. The latter reaction requires enhancing by the verybest catalyst, today platinum. Even so, the cathode isresponsible for the main loss of voltage in the cell. Moreover,the scarc

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20

Seland, Frode. "Electrochemical Oxidation of Methanol and Formic Acid in Fuel Cell Processes." Doctoral thesis, Norwegian University of Science and Technology, Department of Materials Technology, 2005. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-697.

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<p>The main objectives of the thesis work were: (1), to study the oxidation of methanol and formic acid on platinum electrodes by employing conventional and advanced electrochemical methods, and (2), to develop membrane electrode assemblies based on polybenzimidazole membranes that can be used in fuel cells up to 200 °C.</p><p>D.c. voltammetry and a.c. voltammetry studies of methanol and formic acid on polycrystalline platinum in sulphuric acid electrolyte were performed to determine the mechanism and kinetics of the oxidation reactions.</p><p>A combined potential step and fast cyclic voltamme

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21

Valenzuela, Jorge Ignacio. "Electrochemical impedance spectroscopy options for proton exchange membrane fuel cell diagnostics." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/266.

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Electrochemical impedance spectroscopy (EIS) has been exploited as a rich source of Proton Exchange Membrane Fuel Cell (PEMFC) diagnostic information for many years. Several investigators have characterized different failure modes for PEMFCs using EIS and it now remains to determine how this information is to be obtained and used in a diagnostic or control algorithm for an operating PEMFC. This work utilizes the concept of impedance spectral fingerprints (ISF) to uniquely identify between failure modes in an operating PEMFC. Three well documented PEMFC failure modes, carbon monoxide (CO) poi

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22

Zhang, Zhehao. "Palladium Voltammetric Microelectrode as pH Sensor in an Micro Electrochemical Cell." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1496862043661465.

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23

Walker, Angela. "Electrochemical study of vesicular release in bovine chromaffin cells." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23431.

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The time course of the spontaneous current spikes produced by the release of the catecholamines from individual vesicles was examined in bovine chromaffin cells by using the carbon filament technique in the amperometric mode.<br>Frequency histograms of the rise and decay times of the current spikes showed a paucity of very short duration events. Scatterograms of the rise and decay times consistently showed a positive relation, and the best fitted lines intercepted the ordinate (the axis of the decay time) at: 16.06 $ pm$ 6.45 msec (n = 11).<br>The effect of temperature changes upon the time co

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24

Lu, Yunxiang. "Study of electrochemical performance of strontium doped lanthanum cobalt oxides using electrochemical impedance spectroscopy and microelectrode array cell design /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/9818.

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25

Abdur, Rahman Abdur Rub. "CellMap: An Automated Multielectrode Array Cell Culture Analysis System Based on Electrochemical Impedance Spectroscopy." [Tampa, Fla] : University of South Florida, 2007. http://purl.fcla.edu/usf/dc/et/SFE0002185.

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26

Li, Qian. "Electrochemical reduction of oxygen." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:2f37a1ae-dab0-4581-a8fd-e01ce59246c4.

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The main aim of the work reported is the design of proof-of-concept of at point-of-use hydrogen peroxide electrogeneration from air. The experimental work discussed within this thesis explores five major areas: the kinetics of electrocatalysis, ion-pairing, change of solvent media, the electrode surface modication by a redox mediator, and the electrochemical reduction of oxygen within enhanced mass transport systems. The electrocatalytic rates and mass transport of two oxygen reduction redox meditors, viz. anthraquinone and methyl viologen, are studied in aqueous solutions. The investigation i

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27

Guzman, Montanez Felipe. "Electrochemical and Photocatalytic Oxidation of Carbon and Hydrocarbons." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1259616984.

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28

Havránek, Aleš. "Relationship between structure and electrochemical properties of direct methanol fuel cell anodes." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=982891725.

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29

Tsai, Chih-Long. "Ceramic processing and electrochemical analysis of proton conductive solid oxide fuel cell." Thesis, Montana State University, 2010. http://etd.lib.montana.edu/etd/2010/tsai/TsaiC0510.pdf.

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Ba(Zr 0.8-xCe xY 0.2)O &#8323;-delta (0 < or = x < or = 0.4) (BZCYs) powders were successfully fabricated by both solid state reaction and glycine-nitrate process. Lithium fluoride (LiF) was selected as a liquid phase sintering additive to lower the sintering temperature of BZCYs. Using LiF as an additive, high density BZCYs ceramics can be obtained at sintering temperatures 200~300 °C lower than the usual 1700 °C with much shorter soaking time. Nuclear reaction investigations showed no lithium and a small amount of fluorine reside in the sample which indicates the non-concom

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30

Bangisa, Andisiwe. "Electrochemical study of electrode support material for direct methanol fuel cell applications." Thesis, University of Western Cape, 2013. http://hdl.handle.net/11394/3319.

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>Magister Scientiae - MSc<br>This study focused on binary PtRu and PtSn electrocatalyst, synthesized using the polyol approach and supported on MWCNTs, TiO2 and MoO2 materials, after synthesis part of the resultant electrocatalyst was heat treated to improve alloying of the secondary metal to the primary platinum metal catalyst and also to enhance the stable distribution and uniform dispersion of the nanoparticles on the support material. Physical characterization of the supported catalyst was done using XRD, HRTEM, HRSEM and EDS for elemental analysis. For electrochemical characterization RD

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31

Naylor, Philip David. "The electrochemical oxidation of methanol in acid and alkaline fuel cell environments." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/31970.

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The electrochemical oxidation of methanol as applicable to low temperature fuel cell environments, has been investigated. The case for the use of methanol as a directly oxidisable fuel in alkaline electrolyte is presented. Initial work was targeted at establishing a non-noble metal electrode at which methanol could be oxidised in an aqueous alkaline electrolyte. Nickel, as an established electrode material for alkaline cells, was investigated by cyclic voltammetry and potentiostatic polarisation in both hydroxide and carbonate electrolytes, and noted features studied. The relative methanol oxi

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32

Tai, M. H. "An experimental study of the design of an electrochemical ion exchange cell." Thesis, Loughborough University, 1998. https://dspace.lboro.ac.uk/2134/12603.

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Electrochemical Ion Exchange (EIX) was studied to determine the viability of the process for treatment of metal bearing effluents containing Cu, Zn and Ni. Other metals used during the investigation were Na and Cs. The EIX process was examined at the laboratory scale and later in a pilot plant. Process performance and cell design were evaluated both in absorption and regeneration cycles. A mathematical representation of the system was developed based on the Nemst-Planck equation. Zirconium phosphate, Purolite S930 , Purolite S950 and Purolite PrAOH were the ion exchangers used during the study

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33

Ito, Hiroshi. "Electrochemical studies for the development of Li-H2 thermally regenerative fuel cell." Kyoto University, 2004. http://hdl.handle.net/2433/147426.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(エネルギー科学)<br>甲第10980号<br>エネ博第91号<br>新制||エネ||25(附属図書館)<br>UT51-2004-G827<br>京都大学大学院エネルギー科学研究科エネルギー基礎科学専攻<br>(主査)教授伊藤靖彦, 教授尾形幸生, 教授片桐晃<br>学位規則第4条第1項該当

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34

Alsaleh, Ajyal Zaki. "Spectral, Electrochemical, and Solar Cell Studies of Peripheral Modified Carboxy Zinc Porphyrins." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1505284/.

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Six peripherally meso-modified Zn (II) porphyrin sensitizer dyes are designed and their J-V performance in dye sensitized solar cell (DSSC) evaluated. Electron-donating groups including phenothiazine, carbazole and pyrene are used to modify the porphyrin macrocycle at the meso-carbon position(s). To compare the effect of donor substitution on the performance of the cells in terms of short circuit current (Jsc), light harvesting efficiency (LHE) and power conversion efficiency (η), two sets of sensitizers with different degrees of substitution are synthesized. One set of dyes (mono-substituted)

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35

Soldà, Alice <1986&gt. "Electrochemical imaging of living cell metabolism: investigation on Warburg effect in cancer." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7072/1/Solda_Alice_tesi.pdf.

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Cancer is one of the principal causes of death in the world; almost 8.2 million of deaths were counted in 2012. Emerging evidences indicate that most of the tumors have an increased glycolytic rate and a detriment of oxidative phosphorylation to support abnormal cell proliferation; this phenomenon is known as aerobic glycolysis or Warburg effect. This switching toward glycolysis implies that cancer tissues metabolize approximately tenfold more glucose to lactate in a given time and the amount of lactate released from cancer tissues is much greater than from normal ones. In view of these fundam

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36

Soldà, Alice <1986&gt. "Electrochemical imaging of living cell metabolism: investigation on Warburg effect in cancer." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amsdottorato.unibo.it/7072/.

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Cancer is one of the principal causes of death in the world; almost 8.2 million of deaths were counted in 2012. Emerging evidences indicate that most of the tumors have an increased glycolytic rate and a detriment of oxidative phosphorylation to support abnormal cell proliferation; this phenomenon is known as aerobic glycolysis or Warburg effect. This switching toward glycolysis implies that cancer tissues metabolize approximately tenfold more glucose to lactate in a given time and the amount of lactate released from cancer tissues is much greater than from normal ones. In view of these fundam

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37

Sanghez, de Luna Giancosimo <1986&gt. "Open-cell Metallic Foams for the Electrochemical Conversion of Biomass-derived Compounds." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amsdottorato.unibo.it/9855/1/SanghezdeLuna_Giancosimo_Tesi.pdf.

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The electrochemical conversion is a sustainable way for the production of added-value products, operating in mild conditions, using in-situ generated hydrogen/oxygen by water and avoiding the use of high H2/O2 pressures. The aim of this work is to investigate the electrocatalytic conversion of 5-hydroxymetilfurfural (HMF) and D-glucose, in alkaline media, using metallic open-cell foams based-catalysts. The electrochemical hydrogenation of HMF to 2,5-bis(hydroxymethyl)furan (BHMF) was performed using nanostructured Ag, deposited by galvanic displacement (GD) or electrodeposition (ED), on Cu f

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38

Singh, Rahul. "Electrochemical and Partial Oxidation of CH4." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1208025200.

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39

Saeed, Mahfouz Ali. "ELECTROCHEMICAL FABRICATION OF THIN FILM PHOTOVOLTAIC DEVICES (CIGS & CIGSS)." Case Western Reserve University School of Graduate Studies / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=case1396265882.

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40

Zhao, Ge. "Effects of surface microstructure and nanostructure on osteoblast-like mg63 cell number, differentiation and local factor production." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/36532.

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Surface roughness affects bone formation around orthopaedic implants in vivo and osteoblast functions in vitro. Osteoblast-like MG63 cells cultured on rough surfaces exhibited decreased cell number, increased differentiation and increased local factor production when compared to cells grow on smooth surfaces. In these experiments, roughness was characterized as average peak to valley height (Ra) which is not equal throughout the surface. Other features of roughness, including peak and valley area distributions and curvature of the valleys, will affect cell functions. In this study, novel t

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41

Martino, Drew J. "Evaluation of Electrochemical Storage Systems for Higher Efficiency and Energy Density." Digital WPI, 2017. https://digitalcommons.wpi.edu/etd-dissertations/470.

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Lack of energy storage is a key issue in the development of renewable energy sources. Most renewables, especially solar and wind, when used alone, cannot sustain a reliably constant power output over an extended period of time. These sources generally generate variable amounts of power intermittently, therefore, an efficient electrical energy storage (EES) method is required to better temporally balance power generation to power consumption. One of the more promising methods of electrical energy storage is the unitized regenerative fuel cell (UFRC.) UFRCs are fuel cells that can operate in a c

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42

Sandström, Andreas. "Design and Fabrication of Light-Emitting Electrochemical Cells." Doctoral thesis, Umeå universitet, Institutionen för fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-79544.

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Glödlampan, en gång symbolen för mänsklig uppfinningsförmåga, är idag på väg att försvinna. Lysdioder och lågenergilampor har istället tagit över då dessa har betydligt längre livstid och högre effektivitet. Den tidigare så hyllade glödlampan anses numera vara en miljöbov, och förbud och restriktioner mot den blir allt vanligare. Trots detta så är de nya alternativen bara att betrakta som provisoriska steg på vägen mot en ideal ljuskälla, som idag tyvärr inte existerar. Lågenergilampor innehåller exempelvis kvicksilver, och utgör därmed ett direkt hot mot en användares hälsa. Både lysdioder oc

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43

Mellgren, Niklas. "Validated Modelling of Electrochemical Energy Storage Devices." Licentiate thesis, KTH, Mechanics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11052.

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<p>This thesis aims at formulating and validating models for electrochemical energy storage devices. More specifically, the devices under consideration are lithium ion batteries and polymer electrolyte fuel cells.</p><p>A model is formulated to describe an experimental cell setup consisting of a Li<sub>x</sub>Ni<sub>0.8</sub>Co<sub>0.15</sub>Al<sub>0.05</sub>O<sub>2</sub> composite porous electrode with three porous separators and a reference electrode between a current collector and a pure Li planar electrode. The purpose of the study being the identification of possible degradation mechanism

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44

Zelinskyi, S. A., Y. A. Maletin, N. G. Stryzhakova, S. A. Tychyna, and D. M. Drobny. "Electrochemical Behavior of Carbon Electrodes as a Key to Supercapacitor Optimization." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35501.

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The paper describes the electrochemical behavior of supercapacitor electrodes in both positive and negative ranges. This study has become possible due to development of a special reference electrode, which is stable in aprotic electrolytes like, e.g., 1.3 M Et3MeNBF4 in acetonitrile. Three-electrode measurements have enabled us to find the boundary potentials for various nanoporous carbon materials to be then used in the supercapacitor technology. This article describes how the electrode size can be optimized to get the maximum charge value in the double electric layer at the electrode-el

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45

Gcilitshana, Oko Unathi. "Electrochemical Characterization of Platinum based anode catalysts for Polymer Exchange Membrane Fuel Cell." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_5972_1266961431.

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<p>In this study, the main objective was to investigate the tolerance of platinum based binary anode catalysts for CO poisoning from 10ppm up to1000ppm and to identify the<br /> best anode catalysts for PEMFCs that tolerates the CO fed with reformed hydrogen.</p>

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46

Su, Qi [Verfasser]. "Graphene based electrode materials for solar cell and electrochemical oxygen reduction / Qi Su." Mainz : Universitätsbibliothek Mainz, 2012. http://d-nb.info/1024517586/34.

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47

Siengchum, Tritti. "Electrochemical Oxidation of Methane on Ni-Doped Perovskite Anode Solid Oxide Fuel Cell." University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1248205545.

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48

Kieninger, Jochen [Verfasser], and Gerald A. [Akademischer Betreuer] Urban. "Electrochemical microsensor system for cell culture monitoring = Elektrochemisches Mikrosensor-System zum Zellkultur-Monitoring." Freiburg : Universität, 2012. http://d-nb.info/1114995657/34.

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49

Fadel, Mariam. "Designing a new electrochemical cell for the study of enzyme that reduces CO2." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0491.

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Le monoxyde de carbone déshydrogénase (CODH) catalyse la réduction réversible du dioxyde de carbone par son site actif. En utilisant une méthode électrochimique appelée voltammétrie de film protéique, nous étudions le mécanisme enzymatique de CODH en immobilisant l'enzyme à une surface d'électrode de graphite où le transfert direct d'électrons est possible. Traditionnellement, pour empêcher la déplétion du substrat à l'électrode, les électrochimistes utilisent des électrodes tournantes (RDE). Cependant, comme la CODH est très active, même la RDE ne peut pas empêcher l'épuisement, ce qui masque

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Wesselmark, Maria. "Electrochemical Reactions in Polymer Electrolyte Fuel Cells." Doctoral thesis, KTH, Tillämpad elektrokemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25267.

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Abstract:

The polymer electrolyte fuel cell converts the chemical energy in a fuel, e.g. hydrogen or methanol, and oxygen into electrical energy. The high efficiency and the possibility to use fuel from renewable sources make them attractive as energy converters in future sustainable energy systems. Great progress has been made in the development of the PEFC during the last decade, but still improved lifetime as well as lowered cost is needed before a broad commercialization can be considered. The electrodes play an important role in this since the cost of platinum used as catalyst constitutes a large p

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