MnO2 as a Supercapacitor Electrode via Grinding Redox Reactions

被引：11

作者：

Lin, Shudong ^{[1
,2
]}

Li, Keyan ^{[1
]}

Chen, Kunfeng ^{[1
,2
]}

Xue, Dongfeng ^{[1
,2
]}

机构：

[1] Dalian Univ Technol, Sch Chem Engn, Dalian 116024, Peoples R China

[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Jilin, Peoples R China

来源：

MATERIALS FOCUS | 2013年 / 2卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Manganese Oxides; Supercapacitor; Grinding Reaction;

D O I：

10.1166/mat.2013.1050

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Manganese oxide (MnO2) used for supercapacitors was fabricated via the redox reaction between KMnO4 and CH3CHOHCH3 using a simple grinding method. Amorphous MnO2 products were obtained by grinding the reagents, and their crystal structures and morphologies were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The electrochemical measurements showed that this typical amorphous MnO2 has a specific capacitance of 137 F g(-1) based on the total mass of the products. The relative low capacitance can be attributed to the use of the total mass of the products in the calculation process. delta-MnO2 were obtained after annealing this amorphous MnO2. The effects of different annealing temperatures on the structures and capacitive performances of the products were also investigated. The simple method used in this work is fast and inexpensive, and it can be easily introduced to the industry application.

引用

页码：53 / 57

页数：5

共 35 条

[1] Variation of the MnO2 birnessite structure upon charge/discharge in an electrochemical supercapacitor electrode in aqueous Na2SO4 electrolyte [J].

Athouel, Laurence ;

Moser, Francois ;

Dugas, Romain ;

Crosnier, Olivier ;

Belanger, Daniel ;

Brousse, Thierry .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (18) :7270-7277

[2] Crystalline MnO2 as possible alternatives to amorphous compounds in electrochemical supercapacitors [J].

Brousse, Thierry ;

Toupin, Mathieu ;

Dugas, Romain ;

Athouel, Laurence ;

Crosnier, Olivier ;

Belanger, Daniel .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (12) :A2171-A2180

[3] Fabrication of γ-MnO2/α-MnO2 hollow core/shell structures and their application to water treatment [J].

Cao, Jie ;

Mao, Qinghe ;

Shi, Liang ;

Qian, Yitai .

JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (40) :16210-16215

[4] In situ MnK-edge X-ray absorption spectroscopic studies of anodically deposited manganese oxide with relevance to supercapacitor applications [J].

Chang, Jeng-Kuei ;

Lee, Ming-Tsung ;

Tsai, Wen-Ta .

JOURNAL OF POWER SOURCES, 2007, 166 (02) :590-594

[5] MILD SOLUTION ROUTE TO MIXED-PHASE MnO2 WITH ENHANCED ELECTROCHEMICAL CAPACITANCE [J].

Cui, Deyuan ;

Gao, Kun ;

Lu, Pai ;

Yang, Hong ;

Liu, Yinong ;

Xue, Dongfeng .

FUNCTIONAL MATERIALS LETTERS, 2011, 4 (01) :57-60

[6] Effect of crystallographic structure of MnO2 on its electrochemical capacitance properties [J].

Devaraj, S. ;

Munichandraiah, N. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (11) :4406-4417

[7] High capacitance of electrodeposited MnO2 by the effect of a surface-active agent [J].

Devaraj, S ;

Munichandraiah, N .

ELECTROCHEMICAL AND SOLID STATE LETTERS, 2005, 8 (07) :A373-A377

[8] Controllable hydrothermal synthesis of manganese dioxide nanostructures: shape evolution, growth mechanism and electrochemical properties [J].

Duan, Xiaochuan ;

Yang, Jiaqin ;

Gao, Haiyan ;

Ma, Jianmin ;

Jiao, Lifang ;

Zheng, Wenjun .

CRYSTENGCOMM, 2012, 14 (12) :4196-4204

[9] Microstructural Effects on Charge-Storage Properties in MnO2-Based Electrochemical Supercapacitors [J].

Ghodbane, Ouassim ;

Pascal, Jean-Louis ;

Favier, Frederic .

ACS APPLIED MATERIALS & INTERFACES, 2009, 1 (05) :1130-1139

[10] A hierarchical nanostructure consisting of amorphous MnO2, Mn3O4 nanocrystallites, and single-crystalline MnOOH nanowires for supercapacitors [J].

Hu, Chi-Chang ;

Hung, Ching-Yun ;

Chang, Kuo-Hsin ;

Yang, Yi-Lin .

JOURNAL OF POWER SOURCES, 2011, 196 (02) :847-850

← 1 2 3 4 →