Improved Anode Performance of Ni-P-Coated Si Thick-Film Electrodes for Li-Ion Battery
Improved Anode Performance of Ni-P-Coated Si Thick-Film Electrodes for Li-Ion Battery
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DOI：
10.5796/electrochemistry.80.737
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发表时间：
2012-10-01
期刊：
影响因子：
2.5
通讯作者：
Sakaguchi, Hiroki
中科院分区：
文献类型：
--
作者：
Usui, Hiroyuki;Uchida, Naoki;Sakaguchi, Hiroki
为了改善作为锂离子电池阳极的循环性能偏差，我们控制了气沉积法制备的厚膜电极中Si颗粒表面Ni-P层的形貌。在中性镀液中，采用化学沉积的方法将点状Ni-P层均匀地涂覆在Si颗粒上。镍磷包覆硅电极具有良好的循环性能和良好的再现性。性能提高的原因可能是Ni-P层可以有效地释放Li与Si的合金化/脱合金反应产生的应力。(C)日本电化学学会，版权所有。
To improve the deviation of cycling performances as Li-ion battery anode, we controlled the morphology of Ni-P layers deposited on Si particles in thick-film electrodes prepared by a gas-deposition method. The spotty Ni-P layers were uniformly coated on Si particles by an electroless deposition in a neutral bath. The resulting electrodes using Ni-P-coated Si exhibited excellent cycling performances and their good reproducibility. The reason for the improvement of performances is probably that the Ni-P layers can effectively release a stress generated by alloying/dealloying reactions of Li with Si. (C) The Electrochemical Society of Japan, All rights reserved.