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Dissertations / Theses on the topic 'Lithium deposit'

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Published: 4 June 2021
Last updated: 10 February 2022

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1

Anderson, Melissa O. "Evolution and Mineralization of the Moose II Lithium-Tantalum Pegmatite Deposit, Northwest Territories, Canada." Thesis, Fredericton: University of New Brunswick, 2013. http://hdl.handle.net/1882/44617.

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The Moose II rare-metal granitic pegmatite is located approximately 115 km east of Yellowknife, NWT, on the north shore of Great Slave Lake. The irregularly zoned dike is ~430 m long by 61 m wide, and is discordantly hosted within polydeformed metaturbidites of the Neoarchean Yellowknife Supergroup. This deposit was mined for both lithium and tantalum (1946-1954). The pegmatite formed ca. 2652 Ma (U-Pb columbite), which corresponds to a late magmatic period following a phase of extensive plutonism in the Slave Province. The size and orientation of the pegmatite suggest that it was emplaced int
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2

Guiral, Vega Juan Sebastian. "Textural and Mineralogical Characterization of Li-pegmatite Deposit: Using Microanalytical and Image Analysis to Link Micro and Macro Properties of Spodumene in Drill Cores. : Keliber Lithium Project, Finland." Thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70422.

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Lithium represents one of the strategic elements for the rest of the 21st century due to its increasing demand in technological applications. Therefore, new efforts should be focused on the optimization of mineral characterization processes, which link the ore properties with its behaviour during downstream processes. These efforts should result in reducing operational risks and increasing resources utilization. The methodology presented in this study is based on the application of several classification techniques, aiming the mineral and textural characterization of two spodumene pegmatite de
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3

Dittrich, Thomas. "Meso- to Neoarchean Lithium-Cesium-Tantalum- (LCT-) Pegmatites (Western Australia, Zimbabwe) and a Genetic Model for the Formation of Massive Pollucite Mineralisations." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2017. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-228968.

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Lithium Cesium Tantalum (LCT) pegmatites are important resources for rare metals like Cesium, Lithium or Tantalum, whose demand increased markedly during the past decade. At present, Cs is known to occur in economic quantities only from the two LCT pegmatite deposits at Bikita located in Zimbabwe and Tanco in Canada. Host for this Cs mineralisation is the extreme rare zeolite group mineral pollucite. However, at Bikita and Tanco, pollucite forms huge massive, lensoid shaped and almost monomineralic pollucite mineralisations that occur within the upper portions of the pegmatite. In addition, bo
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4

Sparks, Christopher Nigel. "Hot formability and microstructural development of spray-deposited Al-Li alloy and composite." Thesis, University of Sheffield, 1994. http://etheses.whiterose.ac.uk/1805/.

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The deformational and microstructural behaviour of the commercial Al-Li alloy 8090 and an 8090 based composite containing silicon carbide particulate has been investigated. The materials were deformed at elevated temperature by the test methods of plane strain compression (PSC) and torsion to provide stress-strain data for the formulation of constitutive relationships. Torsion testing also provided high temperature ductility data. Isothermal annealing of rolled samples was carried out at the solution temperature of 530°C to investigate the recrystallisation kinetics and microstructures produce
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5

Paterson, Greig Alexander. "Assessment of the usefulness of lithic clasts from pyroclastic deposits as paleomagnetic recorders." Thesis, University of Southampton, 2009. https://eprints.soton.ac.uk/72056/.

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6

Green, Sara. "Electrochromic Nickel – Tungsten Oxides : Optical, Electrochemical and Structural Characterization of Sputter-deposited Thin Films in the Whole Composition Range." Doctoral thesis, Uppsala universitet, Fasta tillståndets fysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-179764.

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This thesis investigates the electrochromic NixW1-x oxide thin film system, where 0 < x < 1. The thin films were deposited by reactive DC magnetron co-sputtering from one Ni and one W metal target. In addition, Ni oxide was deposited with water vapor added to the sputtering gas. The different compositions were structurally characterized by X-ray diffraction, X-ray photoelectron-, Rutherford backscattering- and Raman spectroscopy. Possible nanostructures were studied by ellipsometry together with effective medium theory. Optical and electrochemical properties were investigated by spectrop
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7

Cole, Paul David. "The volcaniclastic deposits of the main caldera and the evolution of the Galluccio Tuff of Roccamonfina volcano, Southern Italy." Thesis, University of Bedfordshire, 1990. http://hdl.handle.net/10547/326089.

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The south-west portion of the main caldera was mapped and a stratigraphy for the caldera-fill was constructed. The exact timing of formation of the main caldera is unclear; However, caldera collapse either predates or was synchronous with the eruption of the Campagnola Tuff. The proximal facies of the Campagnola Tuff exists as a complex relation of ignimbrite, lithic breccia and pyroclastic surge deposits. Overlying this the Galluccio Tuff a compound ignimbrite, ~6 km3 D.R.E, forms the base of the exposed caldera fill. Caldera lakes then became well established and following activity was predo
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8

Dorotík, David. "Deponované vrstvy na bázi olova a kobaltu pro Li-ion akumulátory." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2021. http://www.nusl.cz/ntk/nusl-442525.

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The diploma thesis deals with the principles of operation of lithium ion batteries and their properties when using deposited thin films. The thesis is mainly focused on the formation of thin films using the electrolytic method and subsequently testing the properties of the thin film in an electrochemical cell. The test criteria are mainly the value of the capacity of the prepared electrode and the impact of cycling on the electrode layer itself, where the deposited layer is assessed before cycling and after cycling on an SEM microscope..
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9

Woldemichael, Michael Haile. "The Mineralogical Composition of House Dust in Ontario, Canada." Thesis, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/20664.

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Despite increasing concern about the presence of heavy metals, pesticides and other toxins in indoor environments, very little is known about the physical and chemical composition of ordinary household dust. This study represents the first systematic investigation of the mineralogical composition of indoor dust in residential housing in Canada. Specimens of dust were obtained from homes in six geographically separate cities in the Province of Ontario: two located on the metamorphic and igneous rocks of the Precambrian Canadian Shield (Thunder Bay and Sudbury), the other four located on P
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10

Storelli, Martineau Alexandre. "Étude de l’interface lithium métal/polymère pour l’optimisation des batteries lithium métal tout solide." Thesis, 2020. http://hdl.handle.net/1866/25051.

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Le gain en popularité de l’électricité dans le domaine énergétique, observable depuis plusieurs décennies, accentue l’urgence de développer des équipements de stockage efficaces et performants. Les batteries au lithium-ion (Li-ion), commercialisées depuis le début des années 1990, ont presque atteint les limites théoriques imposées par leurs composantes. La recherche s’oriente donc aujourd’hui vers les batteries tout-solide constituées d’une électrode négative de lithium métal. Ces batteries seraient en mesure d’atteindre des densités énergétiques supérieures à celles attribuables aux batterie
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11

Li, Yi-Chun, and 李奕淳. "Thermal Instability of Organic Esters and Ethers with Deposited Lithium in Lithium-ion battery." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/64999817478717666384.

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碩士<br>國立聯合大學<br>環境與安全衛生工程學系碩士班<br>101<br>The thermal instabilities of deposited lithium with electrolytes in lithium-ion batteries are simulated by the reactions between metallic lithium with organic esters or ethers. Exothermic onset temperatures and enthalpy changes are measured and analyzed by differential scanning calorimetry (DSC).In this study heat of reactions in lithium with thirteen different formations of esters and ethers are determined which are consistent to the data of anodic materials reacted with electrolytes in literature. Furthermore, violently exothermic reactions with entha
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12

Dittrich, Thomas. "Meso- to Neoarchean Lithium-Cesium-Tantalum- (LCT-) Pegmatites (Western Australia, Zimbabwe) and a Genetic Model for the Formation of Massive Pollucite Mineralisations." Doctoral thesis, 2016. https://tubaf.qucosa.de/id/qucosa%3A23157.

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Lithium Cesium Tantalum (LCT) pegmatites are important resources for rare metals like Cesium, Lithium or Tantalum, whose demand increased markedly during the past decade. At present, Cs is known to occur in economic quantities only from the two LCT pegmatite deposits at Bikita located in Zimbabwe and Tanco in Canada. Host for this Cs mineralisation is the extreme rare zeolite group mineral pollucite. However, at Bikita and Tanco, pollucite forms huge massive, lensoid shaped and almost monomineralic pollucite mineralisations that occur within the upper portions of the pegmatite. In addition, bo
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13

Yu, Wang Chien, and 王堅宇. "Studies on Sputter-deposited Lithium Manganese Oxide as Cathode Electrodes for Flexible Thin Film Lithium Batteries." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/38620424988259853226.

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碩士<br>國立臺灣科技大學<br>材料科技研究所<br>92<br>The main objective of the present study is to investigate the LiMn2O4 cathode films deposited on the silicon substrate and Aluminum foil by means of RF-sputtering. The structural and surface morphology of the deposited films at various annealing temperatures were analyzed by employing XRD and SEM techniques. The LiMn2O4 cathode films were tested their charge - discharge characteristics and analyzed. The LiMn2O4 films were also deposited on plastic Kapton substrate to fabricate a flexible Li-ion micro-battery. The LiMn2O4 films were deposited on Si
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14

Cheng, Po-Yuan, and 鄭博元. "The Study on the Sputter-deposited Lithium Manganese Oxide as Cathode Materials for Thin Film Lithium Batteries." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/85876490911003226407.

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碩士<br>國立雲林科技大學<br>工業化學與災害防治研究所<br>94<br>In our study, cathodic lithium manganese oxide film with spinel structure was deposited by radio frequency magnetron sputtering. The sputtering energy and the annealing temperature can control the size of grain clustering effectively. Thus, sputtering energy can affect the growth and rearrangement of grain particle, and the annealing temperature can improve the characteristics of crystallization of the thin film. The effects of the sputtering power, sputtering pressure, and the annealing temperature on the structure and the characteristics of LiMn2O4 thi
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15

Liao, Man-Chen, and 廖曼辰. "Nanoparticles of Lithium Iron Phosphate Deposited on the Graphene by Hydrothermal Method." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/77071067558319575167.

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碩士<br>國立屏東大學<br>應用化學系碩士班<br>103<br>Composites composed of nanoparticles of Lithium iron phosphate (LiFePO4) deposited on graphene were prepared by an advantage technique of hydrothermal process with different purification method、reaction temperature、reaction time which could be used for the anode materials. All of the composites prepared have been characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Some of the composites in this experiment have a good performance on cyclic voltammetry (CV) and some of them could be the promising materials for the Lithium-ion
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16

"Lithium, Boron and Pb-Pb Isotopic Signatures of the Basement Lithologies Underlying the Eastern Athabasca Basin." Thesis, 2015. http://hdl.handle.net/10388/ETD-2015-12-2377.

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The eastern margin of the Proterozoic Athabasca Basin in northern Saskatchewan is host to several of the highest-grade unconformity-related (U/C-related) uranium deposits in the world. Many researchers agree that uranium deposition occurred due to oxidized basinal brines transporting uranium mixing with reducing fluids or interacting with reduced rock causing uranium to precipitate, although the source of the uranium is still an unresolved and highly debated subject. Boron isotopic signatures, preserved in refractory minerals such as tourmaline, can aid in determining the source of fluids and
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17

Lin, Albert Jian. "Lithium niobate thin films deposited on silicon substrates for SAW applications (surface acoustic wave)." Thesis, 1996. http://hdl.handle.net/1911/14063.

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Lithium niobate has a number of attractive piezoelectric and ferroelectric properties that have been exploited for several different applications. The main purpose of this work is to produce lithium niobate thin films on silicon substrates (with amorphous SiO$\sb2$ coating) and to make low insertion loss surface acoustic wave (SAW) devices. For SAW devices, the insertion loss mainly relates to the electromechanical coupling coefficient (K$\sp2$) of the materials. To get low insertion loss in SAW devices, we need use high K$\sp2$ materials. Among common piezoelectric materials, lithium niobate
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18

jhang, Yao-han, and 姚漢章. "Photocatalytic degradation of formaldehyde using TiO2 thin film with nanorods deposited on lithium niobate." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/52dk32.

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碩士<br>國立虎尾科技大學<br>電子工程系碩士班<br>104<br>TiO2 thin film with nanorods was deposited on 128°Y-cut and 64°Y-cut lithium niobate substrates to fabricate a surface acoustic wave nano-photocatalytic device. TiO2 thin films were deposited via radio frequency magnetron sputtering and TiO2 nanorods were synthesized on the TiO2 thin films by chemical solution. The two substrates were selected to investigate the effect of vibration mode on photocatalytic proper in formaldehyde environment. The crystalline structure and surface morphology of TiO2 thin films with nanorods were examined using X-ray diffraction
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19

Lin, Tin-Yi, and 林庭誼. "The electrochemical performance forward lithium of nano crystalline Sn thin films deposited by anode shielded sputtering." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/65064708054080914167.

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碩士<br>逢甲大學<br>材料科學所<br>93<br>Sn thin film anodes have been prepared using rf magnetron sputtering. With appropriate anode shielding during deposition, the film crystallity and surface morphology can be well controlled. The set-up of the anode shielding changed the plasma ion density, resulting in different ion flux available on the substrate as bias was provided. Grazing angle X-ray diffractometer and field emission scanning electron microscope were used to characterize the films crystallity and surface morphology. The electrochemical properties of the thin film anodes deposited under various
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20

Thomson, Sharon L. "Comparative analysis of the Souris gravel and sand deposit, a precontact lithic resource in southwestern Manitoba." 2009. http://hdl.handle.net/1993/3680.

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Gravel deposits in the vicinity of Souris, Manitoba, contain various types of siliceous rock, including chert, agate, quartzite, silicified wood, silicified lignite, and fused shale or porcellanite. These gravels are derived from early Tertiary erosion of the Rocky Mountains. In the absence of better-quality outcrops of material suitable for knapping, the Souris gravel exposure was likely utilized by local Native groups as a precontact source of stone for tool manufacture. Visually-similar silicates are found both on archaeological sites throughout southwestern Manitoba and in deposits in Wyo
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21

Shen, Yuwen, and 沈郁雯. "Characterization And Properties Of Lanthanum Lithium Titanium Oxide Solid-state Electrolyte Thin Film Deposited By RF-sputtering Method." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/25184348047940763429.

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碩士<br>義守大學<br>材料科學與工程學系<br>100<br>Recently, solid state ion conductor has been considered as solid electrolyte in thin film battery development, especially inorganic solid ion conductor. It is expected to improve the drawbacks of the liquid and polymer ion conductors. Among inorganic solid-state ion conductors, amorphous glass systems have advantages of isotropic, no grain boundaries, and characteristics of easy production. In this study, we will focus on the lithium oxide conductor of amorphous glass system because it is stable under air atmosphere. In this study, we prepared La(2/3-x)Li3xTiO
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22

Tu, Hung-en, and 凃弘恩. "Study on the Thermionic-Enhanced Sputter Deposited Lithium Iron Phosphate as a Positive Electrode for Thin Film Battery." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/29958349249860774561.

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碩士<br>逢甲大學<br>材料科學所<br>95<br>Thin film batteries with slim feature, all solid state construction, and flexibility on flexible substrates, high power density and conformability to any shape/size, are promptly researched and developed into a circumstance of ready-to-use recently. Meanwhile, the applications being aggressively proposed include battery-backed computer memories, smart labels/tags, bio-chips, advanced drug delivery, wireless sensor platforms and other MEMs. Positive electrode materials used in the thin film battery have attracted much attention, among which lithium iron phosphate (
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23

Stratford, Dominic Justin. "A study of newly discovered lithics from earlier Stone Age deposits at Sterkfontein, Gauteng province, South Africa." Thesis, 2009. http://hdl.handle.net/10539/6884.

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The need to expand the current lithic Plio-Pleistocene assemblages at Sterkfontein and to understand how these assemblages have been incorporated into the cave deposits is of key importance to archaeological research on the Oldowan and Early Acheulean of South Africa. The greater the archaeological sample size the more accurately inferences can be made regarding the behaviour and technological practices of local hominid groups. An accurate understanding of depositional processes influencing these assemblages allows inferences to be made regarding the post-depositional movement of elements with
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24

Hsiao, Hsuan-Hai, and 蕭炫海. "Thermal Stability and Charge-Discharge Behavior of Sputter Deposited Spinel Lithium Manganese Oxide as Positive Electrodes for Thin Film Battery." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/cu2ny2.

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碩士<br>逢甲大學<br>材料科學所<br>91<br>Lithium ion secondary batteries have recently received extensive attention to be used as a portable energy source, particularly, for lightweight, compact 3C electronics, owing to their high and stable working voltage, superior energy density, low self-discharge rate, and long shelf life. Motivated by this fact, this work examines the features of sputter deposited lithium manganese oxides (LiMn2O4) thin films as battery’s cathode material Thin films of the spinel compounds were deposited by rf magnetron sputtering of LiMn2O4 target on silicon substrates under two
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25

CHANG, TING-WEI, and 張庭維. "A Study on the Fabrication of SnO2 Nanoparticles/Graphene Anode Material of Lithium-ion Battery Deposited by Magnetron Sputtering Method." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/41792111284299486841.

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碩士<br>國立高雄第一科技大學<br>電機工程研究所碩士班<br>105<br>Rechargeable lithium-ion batteries as the main power source, the portable electronic device, either or both of concern in the scientific industry. In order to make the lithium ion battery having the advantages of high capacity, high life and low cost, we use the reactive magnetron sputtering system to prepare the anode material of the excellent solid lithium-ion battery, and proceed to the commercial research direction. In this report, multi–layer graphene (below ten layers) were prepared at low temperature, we could efficiently fabricate the graphene l
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26

HSIUNG, YU-CHIA, and 熊禹迦. "Silicon oxide/copper films deposited by radio-frequency sputtering on nitrogen-doping carbon nanotubes/graphene composites as anode materials of lithium-ion batteries." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/4y8bfn.

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碩士<br>國立雲林科技大學<br>化學工程與材料工程系<br>106<br>The purpose of this study is the development of high power density, high energy density and long-life of lithium-ion batteries. In this way, people could not only improve the performance and reliability of electronic products. In this study, chemical vapor deposition method was used to prepare graphene / CNTs composites as a base, then copper film coated on the graphene / CNTs composites by the RF sputtering. At last, the RF reactive sputtering silicon oxide flim on the composites surface. The Li2O and Li4SiO4 generated in the initial discharge process ca
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27

Jaguemont, Joris. "Gestion thermique d'un pack de batteries lithium-ion en conditions hivernales incluant le vieillissement." Thèse, 2015. http://depot-e.uqtr.ca/7772/1/031167654.pdf.

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28

LAI, YU-HSUN, and 賴昱勳. "Copper/silicon oxide/copper Sandwich-like Films Deposited by Radio-frequency Sputtering on Nitrogen-doping Carbon Nanotubes/graphene Composites as Anode Materials of Lithium-ion Batteries." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/847yun.

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碩士<br>國立雲林科技大學<br>化學工程與材料工程系<br>107<br>The purpose of this study is the development of high power density, high energy density and long-life of lithium-ion batteries. In this way, people could not only improve the performance and reliability of electronic products. In this study, chemical vapor deposition method was used to prepare graphene / CNTs composites as a base, then copper film coated on the graphene / CNTs composites by the RF sputtering. And, the RF reactive sputtering silicon oxide flim on the copper / graphene / CNTs composites. At last, copper film coated on the composites surface
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