Nanoporous graphene obtained by hydrothermal process in H2O2 and its application for supercapacitors

被引：15

作者：

Lv Jinlong

Liang Tongxiang ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing Key Lab Fine Ceram, Zhongguancun St, Beijing 100084, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2016年 / 659卷

关键词：

Graphene oxide; Holey; Hydrothermal process; Supercapacitors; Microstructure; HIGH-PERFORMANCE SUPERCAPACITORS; DOUBLE-LAYER CAPACITORS; ENERGY-STORAGE; HOLEY GRAPHENE; ELECTRODE; OXIDE; BATTERIES; FOAM;

D O I：

10.1016/j.cplett.2016.07.015

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nanohole graphene oxide (NHGO) was obtained in a homogeneous aqueous mixture of graphene oxide (GO) and H2O2 at 120 degrees C. Supercapacitors were fabricated as the electrode material by using NHGO. A specific capacitance of 240.1 F g(-1) was obtained at a current density of 1 A g(-1) in 6 m KOH electrolyte and specific capacitance remained 193.6 F g(-1) at the current density of 20 A g(-1). This was attributed to reducing the inner space between the double-layers, enhanced ion diffusion and large specific surface area. Supercapacitor prepared with NHGO electrodes also exhibited an excellent cycle stability. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：61 / 65

页数：5

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