Enhanced electrochemical performance of porous NiO-Ni nanocomposite anode for lithium ion batteries
Enhanced electrochemical performance of porous NiO-Ni nanocomposite anode for lithium ion batteries
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DOI：
10.1016/j.jpowsour.2011.06.097
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发表时间：
2011-11-15
影响因子：
9.2
通讯作者：
Wang, Chunlei
中科院分区：
文献类型：
--
作者：
Li, Xifei;Dhanabalan, Abirami;Wang, Chunlei
采用静电喷雾沉积（ESD）技术制备了泡沫镍负载的多孔NiO-Ni纳米复合材料，并将其用作锂离子电池负极材料。该阳极被证明表现出改善的循环性能以及良好的倍率性能。复合材料中的Ni颗粒在NiO与Li+的转化反应期间为电子转移提供了高导电介质，并且在充电期间促进了Li 2 O的更完全分解，同时提高了转化反应的可逆性。此外，所获得的多孔结构有利于缓冲循环期间的体积膨胀/收缩。(C)2011 Elsevier B. V.保留所有权利。
The nickel foam-supported porous NiO-Ni nanocomposite synthesized by electrostatic spray deposition (ESD) technique was investigated as anodes for lithium ion batteries. This anode was demonstrated to exhibit improved cycle performance as well as good rate capability. Ni particles in the composites provide a highly conductive medium for electron transfer during the conversion reaction of NiO with Li+ and facilitate a more complete decomposition of Li2O during charge with increased reversibility of conversion reaction. Moreover, the obtained porous structure is benefical to buffering the volume expansion/constriction during the cycling. (C) 2011 Elsevier B.V. All rights reserved.