Improve the electrochemical performances of Cr2O3 anode for lithium ion batteries
Improve the electrochemical performances of Cr2O3 anode for lithium ion batteries
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DOI：
10.1016/j.ssi.2006.03.043
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发表时间：
2006-10-31
影响因子：
3.2
通讯作者：
Chen, Liquan
中科院分区：
文献类型：
--
作者：
Hu, Jin;Li, Hong;Chen, Liquan
Cr2O3 具有相对较低的电动势值、较高的储锂容量和较低的成本，是一种很有前景的锂离子电池负极材料。然而，原始的Cr2O3粉末由于其电导率低和循环过程中体积变化大而表现出较差的电化学性能。采用多种策略对其进行改进，包括构建纳米结构、杂原子掺杂以及制备不同结构的碳/Cr2O3复合材料。碳涂层对于提高循环性能非常有效。这里讨论该机制。 (c) 2006 Elsevier B.V. 保留所有权利。
Cr2O3 is a promising anode material for Li-ion batteries due to its relative low emf value, high Li-storage capacity and low cost. However, pristine Cr2O3 powder shows poor electrochemical performance due to its low electrical conductivity and large volume change during cycling. Several strategies are applied for its improvement, including constructing nanostructure, hetero-atom doping and preparing of carbon/Cr2O3 composite with different structures. Carbon coating is very effective for improving cyclic performance. The mechanism is discussed here. (c) 2006 Elsevier B.V. All rights reserved.