文献类型：期刊文献

英文题名：Rational synthesis of porous CuO/Cu2O/NiCo2O4 3D composites for high-performance supercapacitors

作者：Yin, Huimin[1,2];Yang, Xiaoxiang[1,2];Li, Chang[3];Li, Yan[1,2];Cao, Hongliang[1,2];Chen, Xin[1,2];Wang, Lingling[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Ultrafine Mat, Minist Educ, Sch Mat Sci & Engn, 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 232201, Peoples R China

年份：2021

卷号：36

期号：2

起止页码：387

外文期刊名：JOURNAL OF MATERIALS RESEARCH

收录：;EI(收录号：20210709933913);WOS:【SCI-EXPANDED(收录号:WOS:000615691700005)】；

基金：The authors sincerely appreciate the financial supports for this work from the National Natural Science Foundation of China (21875066), Shanghai Leading Academic Discipline Project (B502), and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Energy storage; Composite; Nanostructure; Honeycomb structure

摘要：Bimetallic oxide NiCo2O4 and its composites hold promising applications for supercapacitors owing to their theoretical capacity, inexpensiveness, and ease of synthesis. In this work, novel CuO/Cu2O/NiCo2O4 (CCNC) open-structured three-dimensional (3D) composites were synthesized. The multiple components and open structure of the composite provide many open channels for ion diffusion, thus, promoting good rate performance during the electrochemical reaction. The optimized sample (CCNC3-6) shows good electrochemical performance, with a high specific capacitance of 1614 F g(-1) at a current density of 1 A g(-1), and good rate performance by maintaining a capacitance of 1383 F g(-1) for increasing current density to 20 A g(-1) (with a merely 14% capacitance loss, as compared with that at 1 A g(-1)). The composite also shows enhanced cycle stability than pure NiCo2O4, with 81% remaining capacitance after 3000 cycles. The CCNC 3D nanocomposites are demonstrated to be promising for high-performance supercapacitor applications.