文献类型：期刊文献

英文题名：Ni,Zn-codoped MgCo2O4 electrodes for aqueous asymmetric supercapacitor and rechargeable Zn battery

作者：Zhu, Zhaoqiang[1];Zhang, Ruizhi[1];Lin, Jiahao[1];Zhang, Kefu[1];Li, Nan[1];Zhao, Chunhua[1];Chen, Guorong[1];Zhao, Chongjun[1]

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

年份：2019

卷号：437

外文期刊名：JOURNAL OF POWER SOURCES

收录：;EI(收录号：20193107254032);WOS:【SCI-EXPANDED(收录号:WOS:000486355400052)】；

基金：We are grateful for the support of Natural Science Foundation of Shanghai (No. 19NR1413000, 13ZR1411900), Shanghai Alliance Plan (No. LM201881, LM201751), Shanghai Leading Academic Discipline Project (B502), and Shanghai Key Laboratory Project (08DZ2230500). We also thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization.

语种：英文

外文关键词：Ni,Zn-codoped spinel MgCo2O4; Binder-free electrode; Asymmetric supercapacitor; Aqueous rechargeable Zn battery

摘要：Ni,Zn-codoped spinel MgCo2O4 is in-situ grown on Co foam through a simple one-pot hydrothermal process, which acts as binder-free electrodes for supercapacitor and aqueous rechargeable Zn battery. As-prepared Ni,Zn-codoped MgCo2O4 electrode exhibits enhanced capacitance (14.43 F cm(-2) or 1500 F g(-1)) and cycling stability (no decay of its initial capacitance after 20000 cycles), and its asymmetric supercapacitor with AC as negative electrode delivers ultrahigh rate capability, good energy density and excellent cycling durability. In addition, aqueous rechargeable Zn battery consisting of this Ni,Zn-codoped MgCo2O4 cathode and Zn anode presents ultrahigh capacity (1.93 mA h cm(-2)) and excellent cycling durability (no decay of its initial capacitance after 30000 cycles). This work supplies a new strategy in designing and constructing high-performance and binder-free spinel type electrode for supercapacitor and aqueous rechargeable Zn battery.