Kinetic analysis on LiFePO4 thin films by CV, GITT, and EIS
文献类型：期刊论文
| 作者 | Tang, K ; Yu, XQ ; Sun, JP ; Li, H ; Huang, XJ |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2011 |
| 卷号 | 56期号:13页码:4869 |
| 关键词 | CHEMICAL DIFFUSION-COEFFICIENT PULSED-LASER DEPOSITION LITHIUM-ION BATTERIES PHASE-TRANSITIONS INSERTION ELECTRODES CATHODE MATERIAL SOLID-SOLUTION INTERCALATION TRANSPORT MODEL |
| ISSN号 | 0013-4686 |
| 通讯作者 | Huang, XJ: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | LiFePO4 thin films were deposited on Ti substrates by pulsed laser deposition (PLD). The apparent chemical diffusion coefficients of lithium in the films, D-Li, were measured by cyclic voltammetry (CV), galvanostatic intermittent titration technique (GITT), and electrochemical impedance spectroscopy (EIS). The average D-Li values calculated from CV results were in the order of 10(-14) cm(2) s(-1). The D-Li values obtained by GITT, and EIS techniques were in the range of 10(-14)-10(-18) cm(2) s(-1), 10(-14)-10(-18) cm(2) s(-1), respectively.The D-Li values obtained by the two methods show a minimum point at x similar to 0.5 for Li1-xFePO4. However, the overpotential values of the LiFePO4 thin film electrodes obtained from the GITT results and the diffusion impedance deduced from the impedance spectra also show the minimum values at x similar to 0.5 for Li1-xFePO4. This contradict could be caused by the improper use of GITT and EIS techniques for measuring the chemical diffusion coefficient of Li in Li1-xFePO4 which constitutes two phase, i.e., LiFePO4 and FePO4 in this region. (C) 2011 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| 资助信息 | CAS [KJCX2- YW-W26]; NSFC [50730005]; "863" project [2009AA033101] |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40455]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Tang, K,Yu, XQ,Sun, JP,et al. Kinetic analysis on LiFePO4 thin films by CV, GITT, and EIS[J]. ELECTROCHIMICA ACTA,2011,56(13):4869. |
| APA | Tang, K,Yu, XQ,Sun, JP,Li, H,&Huang, XJ.(2011).Kinetic analysis on LiFePO4 thin films by CV, GITT, and EIS.ELECTROCHIMICA ACTA,56(13),4869. |
| MLA | Tang, K,et al."Kinetic analysis on LiFePO4 thin films by CV, GITT, and EIS".ELECTROCHIMICA ACTA 56.13(2011):4869. |
入库方式： OAI收割
来源：物理研究所
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