Nanostructured Electrode Materials Derived from Metal-Organic Framework Xerogels for High-Energy-Density Asymmetric Supercapacitor

被引：160

作者：

Mahmood, Asif ^{[1
]}

Zou, Ruqiang ^{[1
]}

Wang, Qingfei ^{[1
]}

Xia, Wei ^{[1
]}

Tabassum, Hassina ^{[1
]}

Qiu, Bin ^{[1
]}

Zhao, Ruo ^{[1
]}

机构：

[1] Peking Univ, Beijing Key Lab Theory & Technol Adv Battery Mat, Dept Mat Sci & Engn, Coll Engn, Beijing 100871, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 03期

基金：

中国国家自然科学基金;

关键词：

metal-organic framework xerogel; iron oxide; nanoporous carbon; aqueous asymmetric supercapacitor; high energy density; DOPED POROUS CARBON; ELECTROCHEMICAL PERFORMANCE; ACTIVATED CARBON; SURFACE-AREA; NANOSHEETS; NANOPARTICLES; CAPACITANCE; HYDROXIDE; STORAGE; FE3O4;

D O I：

10.1021/acsami.5b10725

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This work successfully demonstrates metal organic framework (MOF) derived strategy to prepare nanoporous carbon (NPC) with or without Fe3O4/Fe nanoparticles by the optimization of calcination temperature as highly active electrode materials for asymmetric supercapacitors (ASC). The nanostructured Fe3O4/Fe/C hybrid shows high specific capacitance of 600 F/g at a current density of 1 A/g and excellent capacitance retention up to 500 F/g at 8 A/g. Furthermore, hierarchically NPC with high surface area also obtained za from MOF gels displays excellent electrochemical performance of 272 j F/g at 2 mV/s. Considering practical applications, aqueous ASC (aASC) was also assembled, which shows high energy density of. 17.496 Wh/kg at the power density of 388.8 W/kg. The high energy density and excellent capacity retention of the developed materials show great promise for the practical utilization of these energy storage devices.

引用

页码：2148 / 2157

页数：10

共 57 条

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