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Hierarchical graphite foil/CoNi2S4 flexible electrode with superior thermal conductivity for high-performance supercapacitors

查看全文 作　　者：Yunming [1,2,3]Li;Jiahui [1,2]Chen;Yaqiang [1]Ji;Wenhu [1,4]Yang;Xian-Zhu [1,5]Fu;Rong [1]Sun;Ching-Ping [6]Wong 高影响力作者 机构地区：[1]Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China;[2]Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Shenzhen 518055, Guangdong, China;[3]School of New Energy Science and Engineering, Xinyu University, Xinyu 338004, Jiangxi, China;[4]School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China;[5]College of Materials Science and Engineering, Shenzhen University, Shenzhen 518061, Guangdong, China;[6]Department of Electronic Engineering, Faculty of Engineering, The Chinese University of Hong Kong, Hong Kong 999077, China高影响力机构 出　　处：《Journal of Energy Chemistry》索引2018年第27卷第2期,共9页高影响力期刊 基　　金：financially supported by the National Natural Science Foundation of China (21203236);Shenzhen Peacock Plan (KQCX2015033117354154);Shenzhen basic research plan (JCYJ2015052114432090);the Science & Technology Project of Educational Commission of Jiangxi Province, China (GJJ161198) 摘　　要：Effective heat dissipation is a crucial issue in electrochemical energy storage devices. Thus, it is highly desirable to develop high-performance electrode materials with high thermal conductivity. Here, we report a facile one-step electrodeposition method to synthesize ternary cobalt nickel sulfide(CoNi_2S_4)flower-like nanosheets which are grown on graphite foil(GF) as binder-free electrode materials for supercapacitors. The as-fabricated GF/CoNi_2S_4 integrated electrode manifested an excellent thermal conductivity of 620.1 W·m^(-1)·K^(-1) and a high specific capacitance of 881 F·g^(-2) at 5 mA cm^(-2), as well as good rate capability and cycling stability. Ultimately, the all-solid-state symmetric supercapacitor based on these advanced electrodes demonstrated superior heat dissipation performance during the galvanostatic charge-discharge processes. This novel strategy provides a new example of effective thermal management for potential applications in energy storage devices. 关 键 词：电极材料 电导率 石墨 存储设备 电气化学 镍硫化物 热传导性 应用程序
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