Honeycomb-like Ni3S2 nanosheet arrays for high-performance hybrid supercapacitors
Honeycomb-like Ni3S2 nanosheet arrays for high-performance hybrid supercapacitors
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用于高性能混合超级电容器的蜂窝状 Ni3S2 纳米片阵列
DOI：
10.1016/j.electacta.2018.07.014
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发表时间：
2018-09-01
影响因子：
6.6
通讯作者：
Xie, Erqing
中科院分区：
文献类型：
--
作者：
Fu, Wenbin;Zhao, Yuanyuan;Xie, Erqing
Supercapacitors have attracted great attention as advanced energy storage devices. However, the low energy density and high cost of electrode materials are the downsides for their practical applications. Here, we introduce a facile and low-cost strategy to develop honeycomb-like Ni3S2 nanosheet arrays (NSAs) as a redox-type electrode for aqueous hybrid supercapacitors (HSCs). Owing to the porous structure of NSAs, the Ni3S2 electrode can show excellent electrochemical performance in 2 M KOH aqueous electrolyte. A high specific capacity of 151.2 mAh g(-1) has been achieved at the current density of 3 Ag-1. To demonstrate their further applications, HSCs have been assembled with activated carbon (AC) as negative electrode and the assembled devices can successfully work within a large voltage range of 0 -1.6 V and deliver a maximum energy density of 35.2 Wh kg(-1) at the power density of 491 W kg(-1). (C) 2018 Elsevier Ltd. All rights reserved.
