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Dissertations / Theses on the topic 'Electrolytes – Conductivity'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Brandell, Daniel. "Understanding Ionic Conductivity in Crystalline Polymer Electrolytes." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5734.

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2

Young, Kevin Edward. "Ionic conductivity in silicate - containing solid electrolytes." Thesis, University of Exeter, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335654.

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3

Lilley, Scott J. "Enhancing the conductivity of crystalline polymer electrolytes." Thesis, St Andrews, 2007. http://hdl.handle.net/10023/481.

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4

Gray, David John. "Conductivity studies of selected anionic composite electrolytes." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47453.

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5

Ismail, Iqbal M. I. "Electrochemical studies of polymer electrolytes." Thesis, University of Southampton, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242319.

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6

Aziz, Madzlan. "Structure-conductivity studies in polymer electrolytes containing mutivalent cations." Thesis, De Montfort University, 1996. http://hdl.handle.net/2086/13262.

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7

McHattie, Gillian S. "Ion transport in liquid crystalline polymer electrolytes." Thesis, University of Aberdeen, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324432.

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A systematic study of structure-property relations has been carried out on a range of polymers, both with and without mesogenic moieties. These materials have been characterised using various thermal techniques, including DSC and DMTA. These polymers have been complexed with LiClO<sub>4</sub> and the effects of the salt on thermal characteristics have been investigated. In addition, AC impedance spectroscopy has been employed to determine the temperature dependence of the conductivity of these complexes. Results suggest that polymers with mesogenic side groups have the potential to exhibit a c

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8

Miller, Darren A. "The ionic conductivity of p(2-hydroxyethyl methacrylate) hydrogels /." Title page, contents and summary only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phm6483.pdf.

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9

Varcoe, John Robert. "Synthesis and characterisation of novel inorganic polymer electrolytes." Thesis, University of Exeter, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302667.

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10

Webster, Mark Ian. "Molecular motion in polymer electrolytes : an investigation of methods for improving the conductivity of solid polymer electrolytes." Thesis, University of Kent, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269150.

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11

Webster, Nathan A. S. "New fluorite-type Bi2O3-based solid electrolytes : characterisation, conductivity and crystallography." University of Western Australia. School of Biomedical and Chemical Sciences, 2008. http://theses.library.uwa.edu.au/adt-WU2008.0092.

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[Truncated abstract] New, double-doped, Bi2O3-based materials in the Bi2O3 Ln2O3 PbO (Ln = La, Nd, Er and Yb) and Bi2O3 WO3 PbO systems were prepared using solid-state reactions. For the Bi2O3 Er2O3 PbO and Bi2O3 Yb2O3 PbO systems, the air-quenchable compositional domain of the fcc fluorite-type phase was partially established. Temperature dependent conductivity measurements were performed on these quenched-in fluorite-type materials using AC impedance spectroscopy. Conductivity at 750[degrees Celsius] generally increased with increasing Pb2+/Ln3+ and decreasing (Ln3++Pb2+)/Bi3+ ratios

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12

Cole, M. "Structure-conductivity-temperature relationships in calcium and other divalent polymer electrolytes." Thesis, De Montfort University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234266.

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13

Tomlin, Anthony Stephen. "Conductivity and nuclear magnetic resonance studies on polymer electrolytes based on poly(ethylene oxide)." Thesis, University of St Andrews, 1988. http://hdl.handle.net/10023/15520.

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The thesis details studies relating to polymer electrolytes; the solid ionic conductors farmed by the dissolution of salts in suitable high molecular weight polymers. An outline of polymer electrolyte study is presented with respect to current understanding of the phase behaviour, morphology and conductance behaviour of the electrolyte materials. (In particular, those based upon the linear homopolymer poly(ethylene oxide), PEO.) An electrochemical study has been undertaken (298 K) involving a low molecular weight PEO analogue, PEO(400)e = CH3C02(CH2CH20) CO CH3 (n = 8 - 9 ), containing LiCF3SO

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14

Soares, Helena Sofia Marques Pinto. "Electrolytes for ceramic oxide fuel cells." Doctoral thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15883.

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Doutoramento em Nanociências e Nanotecnologia<br>The main objective of this dissertation is the development and processing of novel ionic conducting ceramic materials for use as electrolytes in proton or oxide-ion conducting solid oxide fuel cells. The research aims to develop new processing routes and/or materials offering superior electrochemical behavior, based on nanometric ceramic oxide powders prepared by mechanochemical processes. Protonic ceramic fuel cells (PCFCs) require electrolyte materials with high proton conductivity at intermediate temperatures, 500-700ºC, such as reported for

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15

Otaduy, Maria Concepcion Garcia. "A nuclear magnetic resonance study of ionic dynamics in solid polymer electrolytes." Thesis, University of Kent, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263697.

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16

Zhang, Zhiyang. "Probing Transport of Ion Dense Electrolytes using Electrophoretic NMR." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51966.

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Ion transport of electrolytes determines the performance of many electroactive devices, from fuel cells to batteries to soft mechanical actuators. This dissertation aims to address some fundamental issues regarding ion transport of ion dense electrolytes using electrophoretic NMR and NMR diffusometry. I first describe the design and fabrication of the first instrumentation capable of reliable ENMR on highly ion-dense electrolytes such as ionic liquids and electrolytes for zinc-air batteries. I design a new electrophoretic NMR sample cell using parallel capillaries to investigate the electroph

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17

Maeshima, Hiroyuki. "Theoretical Study of Electrochemical Stability and Ionic Conductivity of Organic Liquid Electrolytes." 京都大学 (Kyoto University), 2014. http://hdl.handle.net/2433/188591.

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18

Ringer, Eric. "The energetis, dynamics and transport properties of CaF₂ : surface superionic conductivity." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/31029.

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19

Alquraini, Zahra. "Highly Conductive Solid Polymer Electrolytes: Poly(ethylene oxide)/LITFSI Blends." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2018. http://digitalcommons.auctr.edu/cauetds/145.

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In this study, highly ionic conductive solid polymer electrolytes have been prepared by blending high molecular weight polyethylene oxide (PEO: MW 35,000 and 100,000) and bis(trifluoromethane)sulfonamide lithium (LiTFSI) salt. The ionic conductivities were determined for several compositions of the blends at different temperatures. A maximum ionic conductivity of 9.45 x 10-6 S cm-1 at 25 °C has been obtained for the blends containing PEO-35,000/LiTFSI at an ethylene oxide to lithium salt ratio (EO/Li+) of 5, whereas a maximum ionic conductivity 7.7 x 10-6 S cm-1 at 25 °C was observed for the P

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20

Wang, Shanshan. "Development of solid polymer electrolytes of polyurethane and polyether-modified polysiloxane blends with lithium salts." Akron, OH : University of Akron, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1196139638.

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Dissertation (Ph. D.)--University of Akron, Dept. of Polymer Engineering, 2007.<br>"December, 2007." Title from electronic dissertation title page (viewed 01/30/2008) Advisor, Kyonsuku Min; Committee members, Mark Soucek, Kevin A. Cavicchi, Gary R. Hamed, Michael H. Cheung; Department Chair, Sadhan C. Jana; Dean of the College, Stephen Z. D. Cheng; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.

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21

Bayrak, Pehlivan İlknur. "Functionalization of polymer electrolytes for electrochromic windows." Doctoral thesis, Uppsala universitet, Fasta tillståndets fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-204437.

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Saving energy in buildings is of great importance because about 30 to 40 % of the energy in the world is used in buildings. An electrochromic window (ECW), which makes it possible to regulate the inflow of visible light and solar energy into buildings, is a promising technology providing a reduction in energy consumption in buildings along with indoor comfort. A polymer electrolyte is positioned at the center of multi-layer structure of an ECW and plays a significant role in the working of the ECW. In this study, polyethyleneimine: lithium (bis(trifluoromethane)sulfonimide (PEI:LiTFSI)-based p

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22

Best, Adam Samuel 1976. "Lithium-ion conducting electrolytes for use in lithium battery applications." Monash University, School of Physics and Materials Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/9240.

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23

Jung, Doh Won. "Conductivity and stability of bismuth oxide-based electrolytes and their applications for IT-SOFCs." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024943.

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24

Huang, Junhua 1973. "A study of plastic crystals as novel solid state electrolytes." Monash University, School of Chemistry, 2003. http://arrow.monash.edu.au/hdl/1959.1/5522.

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25

Yamaguchi, T., T. Matsuoka, and S. Koda. "A theoretical study on the frequency-dependent electric conductivity of electrolyte solutions. II. Effect of hydrodynamic interaction." American Institite of Physics, 2009. http://hdl.handle.net/2237/12627.

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26

Eiamlamai, Priew. "Electrolytes polymères à base de liquides ioniques pour batteries au lithium." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GRENI016/document.

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De nouvelles familles de liquides ioniques conducteurs par ion lithium; à anions aromatiques et aliphatiques de type perfluorosulfonate perfluorosulfonylimidure attachés à des oligoéthers (méthoxy polyéthylène glycol mPEG) de longueurs différentes ont été synthétisées et caractérisées dans le but d'améliorer l'interaction entre les chaînes de POE et les sels de lithium en améliorant la mobilité segmentaire. Ainsi différentes membranes amorphes ou peu cristallines améliorent le transport cationique par rapport aux électrolytes polymères usuels. . Leurs propriétés ont été évaluées dans deux type

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27

Every, Hayley A. (Hayley Ann) 1973. "An NMR diffusion study of the transport properties in novel electrolytes." Monash University, Dept. of Materials Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/8796.

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28

Fujimura, Koji. "Theoretical Studies of Lithium-Ion Diffusion in LISICON-Type Solid Electrolytes." Master's thesis, 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/180501.

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29

Liivat, Anti. "Ordering in Crystalline Short-Chain Polymer Electrolytes." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7853.

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30

Kimpton, Justin Andrew, and jkimpton@physics unimelb edu au. "Conductivity and microstructural characterisation of doped Zirconia-Ceria and Lanthanum Gallate electrolytes for the intermediate-temperature, solid oxide fuel cell." Swinburne University of Technology, 2002. http://adt.lib.swin.edu.au./public/adt-VSWT20060727.084311.

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Lowering the operating temperature of the high-temperature, solid oxide fuel cell (SOFC) improves both the thermodynamic efficiency and the lifetime of this energy efficient technology. Unfortunately the rate of oxygen-ion transport through the solid electrolyte is temperature dependent, and materials previously employed as electrolytes in the high-temperature SOFC perform poorly at intermediate temperatures. Therefore new oxygen-ion conductors with enhanced ionic conductivity at intermediate temperatures are required. The bulk of the existing literature on high-temperature SOFCs has focussed

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31

Andersson, Jonas. "Synthesis of polycarbonate polymer electrolytes for lithium ion batteries and study of additives to raise the ionic conductivity." Thesis, Uppsala universitet, Strukturkemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-259513.

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Polymer electrolyte films based on poly(trimethylene carbonate) (PTMC) mixed with LiTFSI salt in different compositions were synthesized and investigated as electrolytes for lithium ion batteries, where the ionic conductivity is the most interesting material property. Electrochemical impedance spectroscopy (EIS) and DSC were used to measure the ionic conductivity and thermal properties, respectively. Additionally, FTIR and Raman spectroscopy were used to examine ion coordination in the material. Additives of nanosized TiO2 and powders of superionically conducting Li1.3Al0.3Ti1.7(PO4)3 were inv

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32

Alzharani, Ahmed A. "Organosiloxane-Boron Based Liquid Electrolytes for Application in Lithium-Air Batteries." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2018. http://digitalcommons.auctr.edu/cauetds/158.

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The synthesis of 2,4,6,8-Tetramethylcyclotetrasiloxane (D4H), and Poly(methylhydrosiloxane) (PMHS) average molecular weight 1700-3200 g/mol, were functionalized with different repeat units of methoxy polyethylene glycol (PEG) (n = 8,12,17). These compounds act as polymer electrolytes with a backbone of siloxane and they were prepared via hydro-silylation reaction to be functionalized with different molecular weights of Ally-PEG. The compounds were confirmed by FT-IR, 1H-NMR and 13C NMR spectroscopy. A hydro-silylation reaction between the functionalized AllyPEG of different molecular weights p

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33

Alshahrani, Rasha. "Liquid Organic Electrolytes: Blends of Low Molecular Weight Methoxyoligooxyethylene (MPEGs)/LiTFSI Salt." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2017. http://digitalcommons.auctr.edu/cauetds/111.

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Blends containing methoxyoligooxyethyleneglycol (MPEGs) (MW 350 and 550) and bis(trifluoromethane)sulfonimide lithium (LiTFSI) salt were prepared by solution blending process using tetrahydrofuran (THF) as a solvent. The ionic conductivity of the blends of different compositions were determined at four temperatures i.e. 25°C, 40°C, 60°C and 70°C. A maximum ionic conductivity value of 3.9x10-3 S cm-1 at 25°C was obtained for the blends containing MPEG-350 at an ethylene oxide to lithium salt ratio of 1:10. The ionic conductivity increases with increasing temperature and shows that the ion trans

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34

Pornprasertsuk, Rojana. "Ionic conductivity studies of solid oxide fuel cell electrolytes and theoretical modeling of an entire solid oxide fuel cell /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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35

Šalkus, Tomas. "Investigation of the Correlation between Structure, Elemental Composition, and Charge Carriers’ Transport in Li+, Vo Solid Electrolytes." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090526_111250-04091.

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The influence of the structure and elemental composition of lithium ions’ and oxygen vacancies’ (Vo) solid electrolytes (SE) on their electrical properties are investigated in the dissertation. The technological conditions of SE ceramics’ and films’ fabrication, which influence their microstructure, are described. The results of the investigation of the surfaces, temperature stability, and electrical properties are presented. Li+ SE belong to monoclinic, orthorhombic, or rhombohedral symmetries. The microstructure of the ceramics is mainly influenced by the temperature of their sintering. It

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36

Tomita, Atsuko, Mitsuru Sano, Takashi Hibino, Pilwon Heo, Akihiko Takeuchi, and Masahiro Nagao. "A Proton-Conducting In^3+ -Doped SnP2O7 Electrolyte for Intermediate-Temperature Fuel Cells." The Electrochemical Society, 2006. http://hdl.handle.net/2237/18458.

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37

Salvador, Maria Adelaide Cotovio. "Nano-ionics: proton conduction enhancement of electrolytes by heterogeneous doping." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/22456.

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Doutoramento em Ciência e Engenharia de Materiais<br>Condutores protónicos são o cerne funcional de muitos equipamentos de conversão de energia, sensores e controle de luz. Portanto, é muito importante compreender fenómenos interfaciais. O objectivo desta Tese de Doutoramento é o estudo da condutividade protónica de compósitos nano-iónicos obtidos pela dopagem heterogénea de electrólitos fracos com nanopartículas de óxido e materiais mesoporosos, que são essencialmente dieléctricos, através da formação de interfaces condutoras com elevada concentração de protões. Esta investigação baseia-se na

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38

MUCCILLO, ELIANA N. dos S. "Espectroscopia de impedancia e atrito interno de eletrolitos solidos de ZrOsub2:MgO." reponame:Repositório Institucional do IPEN, 1993. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10334.

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SILVA, GRAZIELA C. T. da. "Efeito da adicao de oxido de cobalto na sinterizacao e na condutividade eletrica da zirconia estabilizada com itria." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11718.

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40

Shen, Kuan-Hsuan. "Modeling ion conduction through salt-doped polymers: Morphology, ion solvation, and ion correlations." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595422569403378.

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41

Crisanti, Samuel Nathan Crisanti. "Effect of Alumina and LAGP Fillers on the Ionic Conductivity of Printed Composite Poly(Ethylene Oxide) Electrolytes for Lithium-Ion Batteries." Case Western Reserve University School of Graduate Studies / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=case1522756200308156.

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42

Štulák, Stanislav. "Stanovení bodu tuhnutí elektrolytů s retardérem hoření kryoskopickou metodou." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-221001.

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The thesis is devoted to the field of properties investigation of new types of electrolytes, and assess the appropriateness of electrolytes studied in this paper for use in Li -ion batteries. It focuses specifically on electrolytes based on aprotic solvents and their mixtures with the flame retardants. The goal of the thesis is to investigate the effects of FRAs on electrolyte mixtures via changes in specific conductivity and freezing point. These objectives were fulfilled by using electrochemical impedance spectroscopy in combination with a cryoscopic measurement method. There were overall 16

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43

Tomita, Atsuko, Mitsuru Sano, Takashi Hibino, Takeshi Yoshii, and Masahiro Nagao. "Electrochemical Reduction of NOx at Intermediate Temperatures Using a Proton-Conducting In^3+ -Doped SnP2O7 Electrolyte." The Electrochemical Society, 2006. http://hdl.handle.net/2237/18459.

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44

Šalkus, Tomas. "Li+, Vo superjonikų struktūros, elementinės sudėties ir krūvininkų pernašos sąsajų tyrimas." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2009. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2009~D_20090526_111240-66313.

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Disertacijoje yra nagrinėjama, kokią įtaką ličio katijonų ir deguonies vakansijų (Vo) kietųjų elektrolitų elektrinėms savybėms daro jų struktūra ir elementinė sudėtis. Darbe yra aprašomos technologinės superjoninių junginių (SJ) keramikų ir sluoksnių gamybos sąlygos, lemiančios jų mikrostruktūrą, bei pateikiami SJ paviršių, temperatūrinio stabilumo ir elektrinių savybių tyrimo rezultatai. Li+ SJ priklauso monoklininei, ortorombinei arba romboedrinei singonijoms. Keramikų mikrostruktūra labiausiai priklauso nuo jų kepinimo temperatūros. LiCe2/3PO4 keramiką paveikus elektriniu lauku, XPS buvo p

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45

Raphael, Ellen. "Estudo de eletrólitos poliméricos à base de agar para aplicação em dispositivos eletrocrômicos." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/75/75131/tde-23032011-145602/.

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Esta tese apresenta os resultados de estudo de eletrólitos poliméricos obtidos a partir de agar com o propósito de serem aplicados em dispositivos eletrocrômicos (ECDs). Modificações físico-químicas foram efetuadas no agar através da adição do plastificante glicerol, bem como de formaldeído, além da adição de uma fonte de prótons, a partir de ácido acético, ou uma fonte de íons, utilizando-se LiClO4, para promover a condutividade iônica dos filmes. Foram também preparadas blendas a partir de agar com gelatina, com quitosana e com poli(etileno dióxido de tiofeno):poli(estireno) (PEDOT:PSS) com

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46

SOUZA, EDUARDO C. C. de. "Relacao microestrutura-propriedades do eletrolito solido Cesub(1-x)Smsub(x)Osub2-delta preparado a partir de nanoparticulas." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9349.

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Made available in DSpace on 2014-10-09T12:26:10Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:00:18Z (GMT). No. of bitstreams: 0<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP<br>FAPESP:04/00364-3

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47

Sano, Mitsuru, Masahiro Nagao, Takashi Hibino, Atsuko Tomita та Daisuke Hirabayashi. "Design of a Reduction-Resistant Ce0.8Sm0.2 O 1.9 Electrolyte Through Growth of a Thin BaCe1−xSmxO3−α Layer over Electrolyte Surface". The Electrochemical Society, 2004. http://hdl.handle.net/2237/18454.

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48

Sánchez, Ballester Soraya Carmen. "Synthesis and characterization of new polymer electrolytes to use in fuel cells fed with bio-alcohols." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/86198.

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Poly(vinyl alcohol) (PVA)-based membranes have gathered significant interest because of their film forming ability and low cost. These films are usually crosslinked to provide a macromolecular network with high dimensional stability. PVA can be modified by introduction of sulfonic acid groups (sPVA) contributing to increase its proton conductivity. In addition, the preparation of hybrid organic-inorganic composite membranes by the addition of graphene oxide (GO) as nano-filler not only reinforces the matrix but also decreases the permeability of solvents. All this has motivated the use of thes

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49

Tomita, Atsuko, Mitsuru Sano, Takashi Hibino, Yousuke Namekata, and Masahiro Nagao. "Intermediate-Temperature NOx Sensor Based on an In^3+ -Doped SnP2O7 Proton Conductor." The Electrochemical Society, 2006. http://hdl.handle.net/2237/18457.

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50

Sano, Mitsuru, Takashi Hibino, Masahiro Nagao, Hidetaka Shibata, and Pilwon Heo. "Performance of an Intermediate-Temperature Fuel Cell Using a Proton-Conducting Sn0.9In0.1P2O7 Electrolyte." The Electrochemical Society, 2006. http://hdl.handle.net/2237/18427.

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