文献类型：期刊文献

英文题名：Facile synthesis of Co3O4 with different morphologies loaded on amine modified graphene and their application in supercapacitors

作者：Sun, Xiaolong[1,2];Jiang, Zhongqing[2];Li, Chenxu[2,3];Jiang, Yingying[2];Sun, Xiaoyun[2];Tian, Xiaoning[2];Luo, Lijuan[2];Hao, Xiaogang[1];Jiang, Zhong-Jie[4]

机构：[1]Taiyuan Univ Technol, Dept Chem Engn, Taiyuan 030024, Peoples R China;[2]Ningbo Univ Technol, Dept Chem Engn, Ningbo 315016, Zhejiang, Peoples R China;[3]East China Univ Sci & Technol, Membrane Res Ctr, Chem Engn Res Inst, Shanghai 200237, Peoples R China;[4]South China Univ Technol, Coll Environm & Energy, New Energy Res Inst, Guangzhou 510006, Guangdong, Peoples R China

年份：2016

卷号：685

起止页码：507

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20162502529438);WOS:【SCI-EXPANDED(收录号:WOS:000382222300074)】；

基金：This work was financially supported by the Chinese National Natural Science Foundation (No. 11474101, U1532139, and 21476156), the National Undergraduate Training Programs for Innovation and Entrepreneurship (No. 201511058006), the Zhejiang Provincial Natural Science Foundation (No. LY14B030001), the Zhejiang Provincial Public Welfare Technology Application Research Project (2015C31151), and the Ningbo Natural Science Foundation (No. 2014A610035).

语种：英文

外文关键词：Amine modified graphene; Co3O4 particles; Interaction; Supercapacitors

摘要：A simple and scalable method has been developed for the growth of Co3O4 on amine modified graphene (NH2-Gs), synthesized from the hydrothermal reaction of graphene oxide in the presence of ammonia. It shows that the relative NH3 content could alter the elemental composition and the relative percentages of functional groups in NH2-Gs, and the Co3O4 particles on the NH2-Gs with a relatively higher amount of amine groups exhibit a relatively small sizes. The obtained Co3O4/NH2-Gs can then be used as an active electrode material for supercapacitors. Among the synthesized samples, Co3O4/NH2-G(2) (the weight ratio of ammonia to GO is 5) exhibits the highest capacitive performance, 2108.4 F g(-1) at 1 A g(-1) and 1356.7 F g(-1) at 15 A g(-1), which is much higher than that of Co3O4 based materials reported previously. The electrode also has a satisfactory cycling performance with capacity retention of 64% after 800 cycles at 5 A g(-1). The enhanced electrochemical performances of Co3O4/NH2-G(2) are ascribed to the higher specific surface area, the smaller Co3O4 particle sizes, the strong interaction between Co3O4 and NH2-G(2), and the higher conductivity. The excellent electrochemical performance makes the resultant composite materials to be a promising candidate for supercapacitor electrode application. (C) 2016 Elsevier B.V. All rights reserved.