Ultrastable MnO2 nanoparticle/three-dimensional N-doped reduced graphene oxide composite as electrode material for supercapacitor

被引：26

作者：

Wang, Peiyuan ^{[1
]}

Sun, Shumin ^{[1
]}

Wang, Shen ^{[1
]}

Zhang, Yang ^{[1
]}

Zhang, Guoqing ^{[1
]}

Li, Yannan ^{[1
]}

Li, Shaodan ^{[1
]}

Zhou, Chao ^{[1
]}

Fang, Shaoming ^{[1
]}

机构：

[1] Zhengzhou Univ Light Ind, Henan Prov Key Lab Surface & Interface Sci, Zhengzhou 450002, Henan, Peoples R China

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2017年 / 47卷 / 12期

基金：

中国国家自然科学基金;

关键词：

MnO2; N-doped reduced graphene oxide; Composite; Supercapacitor; Long cycle stability; ONE-POT SYNTHESIS; HYDROTHERMAL SYNTHESIS; ANODE MATERIALS; FACILE; NANOSHEETS; NANOWIRES; AEROGELS;

D O I：

10.1007/s10800-017-1122-x

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A MnO2 nanoparticle/three-dimensional N-doped reduced graphene oxide (MnO2/3D-NRGO) was prepared through a hydrothermal method with a subsequent ultrasound treatment in a KMnO4 aqueous solution. Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscope, and transmission electron microscope analyses indicate that the MnO2 nanoparticles tightly anchored onto the N-doped graphene sheets in the MnO2/3D-NRGO. Considering the increased bonding force and the 3D porous graphene with 3D interpenetrating microstructures, large accessible surface areas, and interconnected conductive networks, as a supercapacitor electrode material, MnO2/3D-NRGO showed specific capacitance of 349 F g(-1) at 0.5 A g(-1) in a 1.0 M Na2SO4 electrolyte solution and superior cyclic stability (106% of initial capacitance after 20000 cycles). The asymmetric supercapacitor fabricated with the MnO2/3D-NRGO and 3D-NRGO as the positive and negative electrode material, respectively, exhibited a high energy density (35.22 Wh kg(-1) at 200 W kg(-1)), suggesting that MnO2/3D-NRGO is a promising electrode material for supercapacitors.

引用

页码：1293 / 1303

页数：11

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