Hierarchical core/shell structures of ZnO nanorod@CoMoO4 nanoplates used as a high-performance electrode for supercapacitors

被引：35

作者：

Cao, Yunjiu ^{[1
,2
]}

An, Lei ^{[1
]}

Liao, Lijun ^{[1
]}

Liu, Xijian ^{[1
,2
]}

Ji, Tao ^{[1
,2
]}

Zou, Rujia ^{[1
]}

Yang, Jianmao ^{[1
]}

Qin, Zongyi ^{[1
]}

Hu, Junqing ^{[1
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[2] Shanghai Univ Engn Sci, Sch Fundamental Studies, Shanghai 201620, Peoples R China

来源：

RSC ADVANCES | 2016年 / 6卷 / 04期

基金：

中国国家自然科学基金;

关键词：

ELECTROCHEMICAL CAPACITORS; NANOSHEET ARRAYS; FACILE SYNTHESIS; ENERGY-STORAGE; NI FOAM; FABRICATION; GRAPHENE; NANORODS; NANOSTRUCTURES; CONSTRUCTION;

D O I：

10.1039/c5ra21953a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Hierarchical core/shell structures of ZnO nanorod@CoMoO4 nanoplates grown directly on Ni foam were synthesized by a two-step hydrothermal process, in which ZnO nanorod arrays were first grown on Ni foam substrate, and then CoMoO4 nanoplates were grown in multiple directions on each ZnO nanorod. The as-grown ZnO@ CoMoO4 core/shell structures (on Ni foam) directly used as integrated electrodes for electrochemical capacitors demonstrated prominent electrochemical performances, i.e.,a high specific capacitance of 1.52 F cm(-2) at a current density of 2 mA cm(-2), which was higher than that (772 mF cm(-2)) of the pure CoMoO4 electrode, and a good long-term cycling stability, in which the electrodes retained 109% of the initial capacitance after 5000 cycles at a scan rate of 50 mV s(-1). The superior electrochemical performances suggest that the ZnO@ CoMoO4 core/shell structures could be considered as a prospective electrode material for supercapacitors.

引用

页码：3020 / 3024

页数：5

共 37 条

[1] Polypyrrole-covered MnO2 as electrode material for supercapacitor [J].