Morphology-dependent performance of nanostructured Ni3S2/Ni anode electrodes for high performance sodium ion batteries
Morphology-dependent performance of nanostructured Ni3S2/Ni anode electrodes for high performance sodium ion batteries
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高性能钠离子电池纳米结构 Ni3S2/Ni 阳极电极的形态依赖性能
DOI：
10.1016/j.nanoen.2016.06.019
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发表时间：
2016-08-01
期刊：
影响因子：
17.6
通讯作者：
Sun, Xueliang
中科院分区：
文献类型：
--
作者：
Song, Xiaosheng;Li, Xifei;Sun, Xueliang
过渡金属硫化物作为锂离子电池的理想材料，近年来在钠离子电池中的应用受到越来越多的关注。在我们的背景下，用简单的水热方法成功地设计了三种直接生长在泡沫镍上的Ni3S2纳米结构。详细研究了表面形貌对钠离子电池性能演变的影响。结果表明，性能演化的初始下降、逐渐增加、凸型下降和凹型下降分别受R-ct、R-SF、粉化和内应力的控制。结果表明，簇状网络结构有利于电极的循环性能和倍率性能，而棒状结构有利于电极的循环稳定性。(C)2016爱思唯尔有限公司。保留所有权利。
Transition metal sulfides have been treated as promising materials for lithium-ion battery, and recently more and more attention has been paid to its applications in sodium-ion batteries. In our context, three Ni3S2 nanostructures directly grown on Ni foam were successfully designed using a facile hydrothermal method. The influences of the morphology on the performance evolution for sodium-ion batteries were studied in detail. As a result, it was found that the initial drop, gradual increase, convex type decline and concave type decline in the performance evolutions were mainly controlled by R-ct, R-sf, pulverization, and internal stress, respectively. More importantly, our results indicated that the clustered network-like structure was beneficial for the cycling and rate performance, while the rod-like structure was suitable for the cyclic stability of these electrodes. (C) 2016 Elsevier Ltd. All rights reserved.