文献类型：期刊文献

英文题名：Ni counterpart-assisted synthesis of nanoarchitectured Co3O4/CoS/Ni(OH)2@Co electrode for superior supercapacitor

作者：Zhu, Zhaoqiang[1];Zhou, Yanan[1];Wang, Shengqi[1];Zhao, Chunhua[1];Li, Zhen[2];Chen, Guorong[1];Zhao, Chongjun[1]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Shanghai Key Lab Adv Polymer Mat,Sch Mat Sci & En, Shanghai 200237, Peoples R China;[2]Soochow Univ, Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Ctr Mol Imaging & Nucl Med, State Key Lab Radiat Med & Protect,Sch Radiol & I, Suzhou 215123, Peoples R China

年份：2018

卷号：284

起止页码：444

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20183105642820);WOS:【SCI-EXPANDED(收录号:WOS:000442485100050)】；

基金：We are grateful for the support of Shanghai Alliance Plan (No. LM201881, LM201751), International Cooperation Project of Shanghai Municipal Science and Technology Committee (15520721100), Natural Science Foundation of Shanghai (No. 13ZR1411900), Shanghai Leading Academic Discipline Project (B502), and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Ni foam counterpart; Co3O4/CoS/Ni(OH)(2); Nanocomposite; High mass loading; Supercapacitor

摘要：High mass loading Co3O4/CoS-based composites are constructed on Co foam through a one-pot hydrothermal process. Most importantly, when a Ni foam acting as counterpart support is introduced, components, morphologies and structures of composite on Co substrate significantly change: Micro-sized Co3O4/CoS transforms into hierarchical Co3O4/CoS/Ni(OH)(2) nanocomposite. In addition, the areal loading of Ni counterpart-induced Co3O4/CoS/Ni(OH)(2) nanocomposite reaches 14.72mg cm(-2), and it exhibits excellent electrochemical performances: Its electrode possesses an areal capacitance of 14768 mF cm(-2) at a current density of 10 mA cm(-2) and 95.8% capacitance retention after 10000 cycles, while its asymmetric supercapacitor successfully delivers an energy density of 25.4 Wh kg(-1) at a power density of 81.8 W kg(-1) (or 12.34 Wh kg(-1) at a power density of 1632.9 W kg(-1)) and 90.8% capacitance retention after 20000 cycles at a current density of 200 mA cm(-2). Furthermore, two asymmetric supercapacitor devices connected in series easily drive a red light emitting diode. This work opens a new strategy in preparing ultrahigh areal capacitance supercapacitor electrodes. (c) 2018 Elsevier Ltd. All rights reserved.