文献类型：期刊文献

英文题名：Hierarchical FeS/RGO/FeS@Fe foil as high-performance negative electrode for asymmetric supercapacitors

作者：Shao, Xiaoxiao[1];Zhu, Zhaoqiang[1];Zhao, Chongjun[1];Zhao, Chunhua[1];Qian, Xiuzhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2018

卷号：5

期号：8

起止页码：1912

外文期刊名：INORGANIC CHEMISTRY FRONTIERS

收录：;EI(收录号：20183305681405);WOS:【SCI-EXPANDED(收录号:WOS:000442606200019)】；

基金：We are grateful for the support of Shanghai Natural Science Foundation (No. 13ZR1411900), and Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Electrochemical electrodes - Iron - Nickel compounds - Supercapacitor

摘要：A hierarchical FeS/RGO/FeS composite in situ grown on Fe foil was designed and prepared via an Fe foil-involved one-step hydrothermal route, in which Fe foil acted as the Fe source for the lower FeS layer, reductant of GO and subsequent current collector. The as-prepared FeS/RGO/FeS@Fe showed a high specific capacity of 247.5 C g(-1) (206.25 F g(-1)) and good cyclability with 118% capacity retention after 5000 cycles when directly used as an electrode. Additionally, an asymmetric supercapacitor (ASC) was assembled using Ni(OH)(2) and FeS/RGO/FeS@Fe as the positive electrode and negative electrode, respectively. This ASC exhibited maximum power density and energy density of 20000 W kg(-1) and 34.07 W h kg(-1), respectively, suggesting that FeS/RGO/FeS is a promising negative electrode material.