Asymmetric capacitor based on superior porous Ni-Zn-Co oxide/hydroxide and carbon electrodes

被引：121

作者：

Wang, Huanlei ^{[1
]}

Gao, Qiuming ^{[1
]}

Hu, Juan ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Grad Sch, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 09期

基金：

美国国家科学基金会;

关键词：

Porous oxide/hydroxide; Porous carbon; Metal-organic framework; Asymmetric capacitor; Electrochemical performance; ORDERED MESOPOROUS CARBON; ELECTROCHEMICAL CAPACITANCE; NANOPOROUS CARBON; HYDROGEN STORAGE; NICKEL-HYDROXIDE; PORE-SIZE; ENERGY; SUPERCAPACITOR; ZEOLITE; PERFORMANCE;

D O I：

10.1016/j.jpowsour.2009.11.059

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：

Hierarchical porous multi-phase Ni-Zn-Co oxide/hydroxide is synthesized by using metal-organic framework-5 (MOF-5) as the template. Hierarchical porous carbon is obtained by the facile direct decomposition of the MOF-5 framework with phenolic resin. The structures and textures are characterized by X-ray diffraction, high-resolution transmission electron microscopy, scanning electron microscopy, and nitrogen sorption at 77 K. An asymmetric capacitor incorporating the Ni-Zn-Co oxide/hydroxide as the positive electrode and the porous carbon as the negative electrode is fabricated. A maximum energy density of 41.65 Wh kg(-1) is obtained, which outperforms many other available asymmetric capacitors. The asymmetric capacitor also shows a good high-rate performance, possessing an energy density of 16.62 Wh kg(-1) at the power density of about 2900 W kg(-1). (c) 2009 Elsevier B.V. All rights reserved.

引用

页码：3017 / 3024

页数：8

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