A Facile and Template-Free Hydrothermal Synthesis of Mn3O4 Nanorods on Graphene Sheets for Supercapacitor Electrodes with Long Cycle Stability

被引：730

作者：

Lee, Jeong Woo ^{[1
,2
]}

Hall, Anthony S. ^{[2
]}

Kim, Jong-Duk ^{[1
]}

Mallouk, Thomas E. ^{[2
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Chem & Biomol Engn, Ctr Energy & Environm Engn, Taejon 305701, South Korea

[2] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

CHEMISTRY OF MATERIALS | 2012年 / 24卷 / 06期

基金：

美国国家科学基金会; 新加坡国家研究基金会;

关键词：

Mn3O4; graphene; nanorod; supercapacitor; ELECTROCHEMICAL CAPACITORS; THIN-FILMS; INTERCALATED ANIONS; CHEMICAL-SYNTHESIS; OXIDE; CONDUCTIVITY; STORAGE; MNOOH;

D O I：

10.1021/cm203697w

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：

Graphene/Mn3O4 composites were prepared by a simple hydrothermal process from KMnO4 using ethylene glycol as a reducing agent. Mn3O4 nanorods of 100 nm to 1 mu m length were observed to be well-dispersed on graphene sheets. To assess the properties of these materials for use in super-capacitors, cyclic voltammetry and galvanostatic charging discharging measurements were performed. Graphene/Mn3O4 composites could be charged and discharged faster and had higher capacitance than free Mn3O4 nanorods. The capacitance of the composites was 100% retained after 10 000 cycles at a charging rate of 5 A/g.

引用

页码：1158 / 1164

页数：7

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