Facile synthesis of nitrogen-doped porous carbon for supercapacitors

被引：220

作者：

Xu, Bin ^{[1
]}

Duan, Hui ^{[2
]}

Chu, Mo ^{[2
]}

Cao, Gaoping ^{[1
]}

Yang, Yusheng ^{[1
]}

机构：

[1] Res Inst Chem Def, Beijing 100191, Peoples R China

[2] China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2013年 / 1卷 / 14期

基金：

美国国家科学基金会;

关键词：

ELECTROCHEMICAL PERFORMANCE; INTERFACIAL SYNTHESIS; CAPACITANCE; ELECTRODE; PYROLYSIS; GRAPHENE;

D O I：

10.1039/c3ta01637d

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：

A very simple, activation-free method for preparing nitrogen-doped porous carbon with high surface area for supercapacitors by direct pyrolysis of a nitrogen-containing organic salt, ethylenediamine tetraacetic acid (EDTA) disodium magnesium salt, in an inert atmosphere is presented. As the pyrolysis temperature increases from 500 to 900 degrees C, both the BET surface area and pore volume of the disodium magnesium EDTA-derived carbons increase and reach up to 1811 m(2) g(-1) and 1.16 cm(3) g(-1), respectively, while the nitrogen content decreases from 11.14 at.% to 1.13 at.%. The carbon obtained at a moderate pyrolysis temperature of 700 degrees C possesses a balanced surface area (1258 m(2) g(-1)) and nitrogen content (5.43 at.%), exhibits high capacitance (281 F g(-1)), good rate capability (196 F g(-1) at 20 A g(-1)) and cycle durability in 6 mol L-1 KOH aqueous electrolytes.

引用

页码：4565 / 4570

页数：6

共 43 条

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