Facile Synthesis of Flower-like (BiO)2CO3@MnO2 and Bi2O3@MnO2 Nanocomposites for Supercapacitors

被引：58

作者：

Ma, Junjun ^{[1
]}

Zhu, Shijin ^{[1
]}

Shan, Qianyuan ^{[1
]}

Liu, Shifeng ^{[1
]}

Zhang, Yuxin ^{[1
,2
]}

Dong, Fan ^{[3
]}

Liu, Hongdong ^{[4
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Natl Key Lab Fundamental Sci Micro Nanodevices &, Chongqing 400044, Peoples R China

[3] Chongqing Technol & Business Univ, Coll Environm & Biol Engn, Chongqing Key Lab Catalysis & Funct Organ Mol, Chongqing 400067, Peoples R China

[4] Chongqing Univ Arts & Sci, Coll Mat & Chem Engn, Chongqing 402160, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2015年 / 168卷

基金：

国家教育部博士点专项基金资助; 中国国家自然科学基金;

关键词：

Bismuth subcarbonate; Manganese dioxide; Supercapacitor; Nanocomposite; Electrochemistry; LARGE-SCALE SYNTHESIS; RATIONAL DESIGN; TEMPLATE-FREE; PERFORMANCE; NANOSTRUCTURES; MICROSPHERES; COMPOSITE;

D O I：

10.1016/j.electacta.2015.04.018

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Manganese dioxide (MnO2)-decorated flower-like bismuth subcarbonate ((BiO)(2)CO3) and calcined product (Bi2O3) have been uniformly fabricated via a hydrothermal approach, and further investigated as the electrodes for supercapacitor. Both of the core-shell nanostructures displayed moderate capacities (196 F g (1) or 54.5 mAhg (1) for (BiO)(2)CO3@MnO2 and 139.4 F g (1) or 38.7 mAhg (1) for Bi2O3@MnO2) with superb cycling stability (125% for (BiO)(2)CO3@MnO2 and 112% for Bi2O3@MnO2 after 1000 cycles). The electrochemical properties of the electrode are strongly related to their high surface area, porous structure and good conductivity, which cannot only provide rich active sites but also shorten the ion transport pathways. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：97 / 103

页数：7

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