Core-shell Co11(HPO3)8(OH)6-Co3O4 hybrids for high-performance flexible all-solid-state asymmetric supercapacitors

被引：36
作者：
Zhang, Youjuan [1 ]
Zheng, Mingbo [2 ,3 ]
Qu, Meijiao [1 ]
Sun, Mengjun [1 ]
Pang, Huan [1 ,2 ,3 ]
机构：
[1] Anyang Normal Univ, Coll Chem & Chem Engn, Anyang 455002, Henan, Peoples R China
[2] Yangzhou Univ, Coll Chem & Chem Engn, Yangzhou 225002, Jiangsu, Peoples R China
[3] Nanjing Univ, State Key Lab Coordinat Chem, Nanjing 210093, Jiangsu, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 651卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
All-solid-state; Flexibility; High-performance; Core-shell; Supercapacitor; ELECTRODE MATERIALS; NANOSTRUCTURES; MNO2; NANO/MICROSTRUCTURES; NANOSHEETS;
D O I：
10.1016/j.jallcom.2015.08.121
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 novel core-shell structured Co-11(HPO3)(8)(OH)(6)-Co3O4 hybrid material was synthesized in a hydrothermal condition from the microporous Co-11(HPO3)(8)(OH)(6) microrod precursor. Due to the unique nano/microstructures, the assembled asymmetric all-solid-state supercapacitor (Co-11(HPO3)(8)(OH)(6)-Co3O4 and graphene) showed a high gravimetric specific capacitance of 1.84 F cm(-3) at 0.5 mA cm(-2) and an excellent cycling stability with only 1.3% ca decay after 3000 cycling. The device delivered a maximum power density of 105 mW cm(-3) at a current density of 1.5 mA cm(-2) and possessed a maximum volumetric energy density of 0.48 mW h cm(-3) at a current density of 0.5 mA cm(-2). The device also exhibited excellent flexibility. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：214 / 221
页数：8
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