Facile Synthesis of CoWO4 Nanosheet Arrays Grown on Nickel Foam Substrates for Asymmetric Supercapacitors

被引：114

作者：

Chen, Sanming ^{[1
]}

Yang, Guang ^{[1
]}

Jia, Yi ^{[2
]}

Zheng, Huajun ^{[1
,3
]}

机构：

[1] Zhejiang Univ Technol, Dept Appl Chem, Hangzhou 310014, Zhejiang, Peoples R China

[2] Griffith Univ, Queensland Micro & Nanotechnol Ctr, Nathan, Qld, Australia

[3] Zhejiang Univ Technol, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Zhejiang, Peoples R China

来源：

CHEMELECTROCHEM | 2016年 / 3卷 / 09期

关键词：

CoWO4; hydrothermal synthesis; nanosheet arrays; nickel foam; supercapacitors; HIGH-PERFORMANCE; ELECTROCHEMICAL PROPERTIES; NICO2O4; NANOSHEETS; ELECTRODES; ENERGY; NIWO4;

D O I：

10.1002/celc.201600316

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Well-aligned CoWO4 nanosheet arrays grown on nickel foam substrates have been fabricated by using a facile hydrothermal process. The interconnected CoWO4 nanosheets with abundant open spaces are uniformly deposited on the skeleton of the nickel foam. When investigated as binder-free electrodes for supercapacitors, the CoWO4 nanosheet arrays exhibit a specific capacitance of 1127.6Fg(-1) at 1Ag(-1) and remarkable cycle performance. Moreover, an asymmetric supercapacitor (ASC) is assembled by using CoWO4 nanosheets and activated carbon as the positive electrode and negative electrode, respectively. The ASC device delivers a maximum energy density of 48Whkg(-1) at a power density of 365Wkg(-1). The results demonstrate that CoWO4 nanosheet arrays could be potential electrode materials for energy-storage systems.

引用

页码：1490 / 1496

页数：7