Ordered porous Mn3O4@N-doped carbon/graphene hybrids derived from metal-organic frameworks for supercapacitor electrodes

被引：44

作者：

Zhao, Kuangmin ^{[1
]}

Lyu, Kezhou ^{[1
]}

Liu, Suqin ^{[1
]}

Gan, Qingmeng ^{[1
]}

He, Zhen ^{[1
]}

Zhou, Zhi ^{[2
]}

机构：

[1] Cent South Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China

[2] Hunan Agr Univ, Coll Sci, Changsha 410128, Hunan, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2017年 / 52卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ZEOLITIC IMIDAZOLATE FRAMEWORK; HYDROTHERMAL SYNTHESIS; COORDINATION-POLYMER; DIRECT CARBONIZATION; NANOPOROUS CARBONS; PERFORMANCE; GRAPHENE; MN3O4; NANOPARTICLES; COMPOSITES;

D O I：

10.1007/s10853-016-0344-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An ordered porous Mn3O4@N-doped carbon/graphene (MCG) composite has been synthesized through a facile carbonization of Mn-based metal-organic frameworks (Mn-MOFs) using the poly(styrene-co-AA) spheres as the template. Because of the periodic arrangement of metal nodes and organic ligands in the Mn-MOFs, the Mn3O4 nanoparticles with an average diameter of 7 nm are uniformly distributed and the carbon is formed in situ in the MCG composite. The MCG exhibits a specific surface area of 326 m(2) g(-1) with a total pore volume of 1.02 cm(3) g(-1), which is much higher than that of the Mn3O4-based composites reported to date. In addition, the MCG displays excellent electrochemical performances in an aqueous 1 M Na2SO4 electrolyte with a maximum specific capacitance of 456 F g(-1) at 1 A g(-1) and 246 F g(-1) at 20 A g(-1). The MCG also owns a good cycling stability with 98.1 % of the initial capacitance remaining after 2000 cycles at 5 A g(-1).

引用

页码：446 / 457

页数：12

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