Nanospherical Cu2O/NiO synthesized by electrochemical dealloying as efficient electrode materials for supercapacitors

被引：12

作者：

Miao, Yidong ^{[1
]}

Zhang, Xuping ^{[2
]}

Sui, Yanwei ^{[2
]}

Hu, Enyuan ^{[2
]}

Qi, Jiqiu ^{[2
]}

Wei, Fuxiang ^{[2
]}

Meng, Qingkun ^{[2
]}

He, Yezeng ^{[2
]}

Sun, Zhi ^{[2
]}

Ren, Yaojian ^{[2
]}

Zhan, Zhenzhen ^{[2
]}

机构：

[1] China Univ Min & Technol, Xuzhou 221116, Jiangsu, Peoples R China

[2] China Univ Min & Technol, Sch Mat Sci & Phys, Xuzhou 221116, Jiangsu, Peoples R China

来源：

MATERIALS LETTERS | 2020年 / 265卷

基金：

中国国家自然科学基金;

关键词：

Nanosphere; Cu2O/NiO; Supercapacitors; Electronic materials; Microstructure; PERFORMANCE; FABRICATION;

D O I：

10.1016/j.matlet.2020.127300

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, Cu2O/NiO with nanosphere structure has been successfully synthesized by dealloying a copper foil coated with Zn-Cu-Ni alloy films. First, Zn-Ni films were electrodeposited on copper foil. Next, the Zn-Cu-Ni films were produced by annealing and the Cu2O/NiO was obtained after Zn-dealloying and oxidation. Due to the advantage of the tunable nanosphere structure and dealloying synthesis method, Cu2O/NiO has excellent supercapacitor properties, such as excellent cycling stability (94.5% after 5000 cycles) and high specific capacitance (2255.5 mF/cm(2) in 1 mA/cm(2)). These data suggested that this low-cost oxide Cu2O/NiO with nanosphere morphology synthesized by dealloying method could be a promising electrode material for supercapacitors. (C) 2020 Published by Elsevier B.V.

引用

页数：5

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