• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 33
  • 9
  • 3
  • 3
  • 1
  • 1
  • Tagged with
  • 62
  • 62
  • 32
  • 29
  • 23
  • 23
  • 18
  • 15
  • 14
  • 13
  • 9
  • 9
  • 9
  • 8
  • 8
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Impedance-Spectroscopic Quantification of High Bulk Ionic Conductivity in Li1.3Al0.3Ti1.7(PO4)3 Solid Electrolyte

Mertens, Andreas, Yu, Shicheng, Gunduz, Deniz C., Tempel, Hermann, Schierholz, Roland, Kungl, Hans, Granwehr, Josef, Eichel, Rüdiger-A. 12 September 2018 (has links)
No description available.
12

Geometric and electrochemical characteristics of lithium ion batteries

Kang, Huixiao 05 1900 (has links)
Indiana University-Purdue University Indianapolis (IUPUI) / The geometric and electrochemical characteristics of different lithium ion batteries (LIBs) are investigated in this study. The core work is to study the impact of the calendering process on NMC cathode electrodes performance. X-ray CT image processing by Python, MATLAB, ImageJ and Avizo is utilized in this study. NMC electrodes with different calendering conditions were fabricated to calculate electrochemical properties of the cells. Charge/discharge of the electrodes under 0.1C, 0.2C, 0.4C, 1C, 2C, 4C and 0.1C (retention test) rates were cycled for three times respectively between 4.2 V and 3.0 V. Electrochemical impedance spectroscopy testing was used to further explain the effects of NMC density on rate capability. Geometric properties of NMC electrodes with different calendering conditions were calculated from the computed tomography data of the electrodes. A synchrotron transmission X-ray microscopy tomography system at the Advanced Photon Source of the Argonne National Laboratory was employed to obtain the tomography data. X-ray CT image processing before the data analysis was introduced. Python based Tomopy and ASTRA toolbox were used to filter the original HDF5 data and reconstruction. ImageJ was used to help remove noise, adjust contrast and cropping. Iso2mesh and image processing tool box were used in MATLAB to generate meshed 3D structure of CT data. Geometric properties of NMC electrodes including porosity, pore size distribution, particle size distribution, specific surface area and tortuosity were calculated from the computed tomography data of the electrodes. The geometric and electrochemical analysis show that calendering can increase the electrochemically active area, which lead to improving of the rate capability. However, more calendering will result in crushing of NMC particles, which can reduce the electrode capacity at relatively high C rates. This study shows that the optimum electrochemical performance of NMC electrode at 94:3:3 weight ratio of NMC:binder:carbon black can be achieved by calendering to 3.0 g/cm3 NMC density. LTAP solid electrolyte and NMC cathode material mix electrode-electrolyte X-ray CT data was studied in last chapter. By using 8 kev X-ray energy, we could distinguish NMC active material, LTAP solid electrolyte and the others three phase. On the basis of NMC electrode image processing method, dilation and multiply threshold method is applied to get three-phase 3D geometry. A comparing of connection area between NMC and LTAP of 700psi and 1300psi electrode was analyzed. Geometric properties like tortuosity, di_usion length and e_ective di_usivity were generated from the CT data.
13

Theoretical Studies of Lithium-Ion Diffusion in LISICON-Type Solid Electrolytes / LISICON系固体電解質におけるリチウムイオン拡散の理論的研究

Fujimura, Koji 24 September 2013 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第17888号 / 工博第3797号 / 新制||工||1581(附属図書館) / 30708 / 京都大学大学院工学研究科材料工学専攻 / (主査)教授 田中 功, 教授 酒井 明, 教授 邑瀬 邦明 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
14

In Situ Probe Microscopic Studies on Graphite Electrodes for Lithium-ion Batteries / その場プローブ顕微鏡を用いたリチウムイオン電池用黒鉛負極に関する研究

Hee-Youb, Song 23 September 2016 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第20000号 / 工博第4244号 / 新制||工||1657(附属図書館) / 33096 / 京都大学大学院工学研究科物質エネルギー化学専攻 / (主査)教授 安部 武志, 教授 作花 哲夫, 教授 阿部 竜 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
15

Studies on Effects of Solid Electrolyte Interface on Negative Electrode Properties for Lithium-ion Batteries / リチウムイオン電池用負極の特性に固体電解質界面が及ぼす影響に関する研究

Yamate, Shigeki 23 May 2017 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第20581号 / 工博第4361号 / 新制||工||1678(附属図書館) / 京都大学大学院工学研究科物質エネルギー化学専攻 / (主査)教授 安部 武志, 教授 作花 哲夫, 教授 阿部 竜 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DGAM
16

Extended Design of Concentrated-Polymer-Brush-Decorated Hybrid Nanoparticles and Their Use for Phase-Separation Control / 濃厚ポリマーブラシ付与複合微粒子の構造設計の拡張と相分離構造の制御

Yahata, Yoshikazu 23 May 2018 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(工学) / 甲第21273号 / 工博第4501号 / 新制||工||1700(附属図書館) / 京都大学大学院工学研究科高分子化学専攻 / (主査)教授 辻井 敬亘, 教授 山子 茂, 教授 秋吉 一成 / 学位規則第4条第1項該当 / Doctor of Philosophy (Engineering) / Kyoto University / DFAM
17

Origin of Polarization Behavior in All-Solid-State Lithium-Ion Battery Using Sulfide Solid Electrolyte / 硫化物系固体電解質を用いた全固体リチウムイオン二次電池における分極挙動の起源

Chen, Kezheng 26 November 2018 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(人間・環境学) / 甲第21432号 / 人博第870号 / 2018||人博||870(吉田南総合図書館) / 京都大学大学院人間・環境学研究科相関環境学専攻 / (主査)教授 内本 喜晴, 教授 田部 勢津久, 教授 吉田 鉄平 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DFAM
18

Hierarchical spatiotemporal analyses and the design of all-solid-state lithium-ion batteries / 階層的時空間解析と全固体リチウムイオン電池の設計

Yang, Seunghoon 25 July 2022 (has links)
京都大学 / 新制・課程博士 / 博士(人間・環境学) / 甲第24149号 / 人博第1052号 / 新制||人||246(附属図書館) / 2022||人博||1052(吉田南総合図書館) / 京都大学大学院人間・環境学研究科相関環境学専攻 / (主査)教授 内本 喜晴, 教授 吉田 鉄平, 准教授 松井 敏明, 教授 林 晃敏 / 学位規則第4条第1項該当 / Doctor of Human and Environmental Studies / Kyoto University / DFAM
19

Evidence for Intermediate Phase in Solid Electrolyte Glasses

Novita, Deassy I. 20 April 2009 (has links)
No description available.
20

Molecular Structure of (AsSe)<sub>1-x</sub>(Ag<sub>2</sub>Se)<sub>x</sub> solid electrolyte glasses

Wachtman, Jacob L. January 2009 (has links)
No description available.

Page generated in 0.0527 seconds