Facile synthesis of self-supported core-shell Cu2O@MnO2 octahedral microcrystals and their application in supercapacitors

被引：12

作者：

Chai, Chaojing ^{[1
]}

Liu, Aifeng ^{[1
]}

Lv, Yamei ^{[1
]}

Mu, Jingbo ^{[1
]}

Zhang, Xiaoliang ^{[1
]}

Che, Hongwei ^{[1
]}

机构：

[1] Hebei Univ Engn, Coll Mat Sci & Engn, Handan 056038, Peoples R China

来源：

MATERIALS LETTERS | 2017年 / 196卷

基金：

中国国家自然科学基金;

关键词：

Semiconductor; Core-shell; Cu2O@MnO2; Energy storage and conversion; NANOWIRES;

D O I：

10.1016/j.matlet.2017.03.108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Novel self-supported core-shell Cu2O@ MnO2 octahedral microcrystals directly growing on the nickel foam have been synthesized through a facile solvothermal reduction deposition process followed by a hydrothermal reaction. The core-shell heterostructures were constructed through growing MnO2 nanosheets on the surface of Cu2O octahedral microcrystal. Based on the synergetic effects from both the cores and shells, such self-supported core-shell Cu2O@ MnO2 octahedral microcrystals as binder-free electrode materials exhibited a high specific capacitance of 371 F g(-1) at 0.5 A g(-1) and excellent cycling stability with 95.8% of capacitance retention after 2000 cycles. These findings suggest their potential applications as a promising electrode material for supercapacitors. (C) 2017 Elsevier B. V. All rights reserved.

引用

页码：308 / 311

页数：4

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