文献类型：期刊文献

英文题名：A Novel Strategy of Multi-element Nanocomposite Synthesis for High Performance ZnO-CoSe2 Supercapacitor Material Development

作者：Chen, Xin[1,2];Li, Yan[1,2];Li, Chang[1,2,3];Cao, Hongliang[1,2,4];Wang, Chuanzhen[1,2];Cheng, Siyu[1,2];Zhang, Qi[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Sch Mat Sci & Engn, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China;[3]Anhui Univ Sci & Technol, Analyt & Testing Ctr, Huainan 232001, Anhui, Peoples R China;[4]East China Univ Sci & Technol, Biomed Nanotechnol Ctr, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：39

期号：9

起止页码：2441

外文期刊名：CHINESE JOURNAL OF CHEMISTRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000668884600001)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 21875066), the Shanghai Leading Academic Discipline Project (No. B502), and the Shanghai Key Laboratory Project (No. 08DZ2230500).

语种：英文

外文关键词：Selective combination; Supercapacitor; Electrochemistry; Nanoparticles; Energy conversion

摘要：Main observation and conclusion Developing multi-element composites is a promising way for high performance supercapacitor material development, and simplifying the synthesis steps is critical for reducing the preparation costs and successful promotion of the materials. A novel one-step selective reaction strategy is developed, and successfully used to prepare four-element ZnO-CoSe2 (ZOCS) nano-spherical composites, to be used as supercapacitor materials. Started form nano-spherical glycerate templates, under the optimal synthesis condition, the obtained ZOCS-0.125 electrode material exhibits a specific capacitance of 450.7 F/g at 1 A/g and a good rate performance by keeping 76.8% capacitance at 20 A/g. Moreover, the ZOCS-0.125 electrode exhibits excellent cycle stability of 114.9% capacitance retention after 5000 cycles at 10 A/g. An asymmetric supercapacitor assembled by ZOCS-0.125 and activated carbon electrodes delivers an energy density of 22.35 Wh/kg at 825 W/kg, and a cycle stability of 105.6% capacitance retention after 5000 cycles. This work not only shows the good potential of the facilely prepared ZnO-CoSe2 composite electrode material, but also demonstrates a new strategy for low cost and high performance multielement composite material development, that can be used in a wide range of applications.