Heating-Rate-Induced Porous α-Fe2O3 with Controllable Pore Size and Crystallinity Grown on Graphene for Supercapacitors

被引：97

作者：

Yang, Shuhua ^{[1
]}

Song, Xuefeng ^{[1
]}

Zhang, Peng ^{[1
]}

Gao, Lian ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Metall Matrix Composite Mat, Shanghai 200240, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 01期

基金：

中国国家自然科学基金;

关键词：

heating-rate-induced porous alpha-Fe2O3; pore size; crystallinity; supercapacitors; ELECTROCHEMICAL ENERGY-STORAGE; MESOPOROUS METAL-OXIDES; ELECTRODES; NANOSHEETS; STRATEGY; DESIGN; WALLS;

D O I：

10.1021/am507910f

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous alpha-Fe2O3/graphene composites (S-PIGCs) have been synthesized by a simple hydrothermal method combined with a slow annealing route. The S-PIGCs as a supercapacitors electrode material exhibit an ultrahigh specific capacitance of 343.7 F g(-1) at a current density of 3 A g(-1), good rate capability, and excellent cycling stability. The enhanced electrochemical performances are attributed to the combined contribution from the optimally architecture of the porous alpha-Fe2O3, as a result of a slow annealing, and the extraordinary electrical conductivity of the graphene sheets.

引用

页码：75 / 79

页数：5

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