文献类型：期刊文献

英文题名：Flower-like ternary metal of Ni-Co-Mn hydroxide combined with carbon nanotube for supercapacitor

作者：Shang, Yizheng[1];Ma, Shuai[1];Wei, Yongming[1];Yang, Hu[1];Xu, Zhenliang[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Membrane Sci & Engn R&D Lab, Chem Engn Res Ctr, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：26

期号：7

起止页码：3609

外文期刊名：IONICS

收录：;EI(收录号：20201208321304);WOS:【SCI-EXPANDED(收录号:WOS:000545159700044)】；

语种：英文

外文关键词：NiCoMn(OH)(6); Carbon nanotube; Asymmetric supercapacitor

摘要：Multi-metal hydroxides based on nickel, cobalt, and manganese are considered as promising materials of working electrode for supercapacitor owing to their unique physical and chemical properties. The combination of multi-metal hydroxide with carbon material can further improve their electrochemical performance. In this work, nickel-cobalt-manganese hydroxide/carbon nanotube (CNT) composite was synthesized using a simple hydrothermal method and used as working electrode material for a supercapacitor. The experimental results show that the addition of carbon nanotubes can effectively improve the electrochemical performance of nickel-cobalt-manganese ternary metal hydroxides. NiCoMn(OH)(6)/CNT composites exhibit a specific capacity of 2136.2 F g(-1)at 1 A g(-1)and still retain a specific capacity of 1914 F g(-1)at 10 A g(-1), demonstrating excellent rate capability. Besides, the composite maintains 77% specific capacity after 2000 cycles, showing good cycle stability. The asymmetric supercapacitor assembled with NiCoMn(OH)(6)/CNTs as the positive electrode material and activated carbon (AC) as the negative electrode also has good electrochemical performance. It shows high specific capacity of 150.88 F g(-1)at 1 A g(-1)and still has a specific capacity of 81.17 F g(-1)at 20 A g(-1), which retains 53.8% of the initial specific capacity.