The development of low cost LiFePO4-based high power lithium-ion batteries

被引：161

作者：

Striebel, K ^{[1
]}

Shim, J ^{[1
]}

Sierra, A ^{[1
]}

Yang, H ^{[1
]}

Song, XY ^{[1
]}

Kostecki, R ^{[1
]}

McCarthy, K ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA

来源：

JOURNAL OF POWER SOURCES | 2005年 / 146卷 / 1-2期

关键词：

lithium-ion; post-test; LiFePO4; LiBOB; Raman spectroscopy;

D O I：

10.1016/j.jpowsour.2005.03.119

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Pouch type LiFePO4-natural graphite lithium-ion cells were cycled at constant current with periodic pulse-power testing in several different configurations. Components were analyzed after cycling with electrochemical, Raman and TEM techniques to determine capacity fade mechanisms. The cells with carbon-coated current collectors in the cathode and LiBOB-salt electrolyte showed the best performance stability. In many cases, irons species were detected on the anodes removed from cells with both TEM and Raman spectroscopy. The LiFePO4 electrodes showed unchanged capacity suggesting that the iron is migrating in small quantities and is acting as a catalyst to destabilize the anode SEI in these cells. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：33 / 38

页数：6

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