Binder-free electrodes based on Mn3O4/γ-MnOOH composites on carbon cloth for supercapacitor application

被引：23

作者：

Meng, Shujuan ^{[1
,2
]}

Mo, Zunli ^{[1
]}

Li, Zhenliang ^{[1
]}

Guo, Ruibin ^{[1
]}

Liu, Nijuan ^{[1
]}

机构：

[1] Northwest Normal Univ, Res Ctr Gansu Mil & Civilian Integrat Adv Struct, Key Lab Ecoenvironm Related Polymer Mat, Minist Educ China,Coll Chem & Chem Engn, Lanzhou 730070, Gansu, Peoples R China

[2] Northwest Minzu Univ, Sch Chem Engn, Lanzhou 730030, Gansu, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2019年 / 274卷

基金：

中国国家自然科学基金;

关键词：

Mn3O4/gamma-MnOOH composites; Carbon cloth; Binder-free supercapacitor; Hydrothermal synthesis; SHELL NANOWIRE ARRAYS; HIGH-PERFORMANCE; FACILE SYNTHESIS; ENERGY-DENSITY; MN3O4; NANOSHEETS; MNO2; NANORODS; CONVERSION; GRAPHENE;

D O I：

10.1016/j.jssc.2019.03.030

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Here, we develop a hydrothermal method to grow Mn3O4 particles/gamma-MnOOH nanowires heterostructures simultaneously on carbon cloth (Mn3O4-gamma-MnOOH@CC) for high performance supercapacitor electrodes without any binder. The supercapacitor electrodes based on Mn3O4-gamma-MnOOH@CC exhibit outstanding electrochemical performance. In three-electrode system measurement, a specific areal capacitance of 2507.1 mF cm(-2) at a current density of 1 mA cm(-2) is achieved. When the current density increases to 10 mA cm(-2), a specific areal capacitance of 1365.2 mF cm(-2) is still kept. We also fabricate a symmetric supercapacitor device by using Mn3O4-gamma-MnOOH@CC, demonstrating a specific areal capacitance of 1201.2 mF cm(-2) and a high energy density of 1.47 mWh cm(-3) at a current density of 3 mA cm(-2). The cyclic stability test shows that the capacitance retention is 92.6% after 10000 cycles. These remarkable results indicate that Mn3O4-gamma-MnOOH@CC electrode is a promising candidate for constructing high performance supercapacitors.

引用

页码：134 / 141

页数：8

共 59 条

[1] Mn3O4 nanorods with secondary plate-like nanostructures; preparation, characterization and application as high performance electrode material in supercapacitors [J].