Binder free synthesis of MnO2 nanoplates/graphene composites with enhanced supercapacitive properties

被引：14

作者：

Li, Zijiong ^{[1
]}

Su, Yuling ^{[1
]}

Yun, Gaoqian ^{[1
]}

Shi, Kai ^{[1
]}

Lv, Xiaowei ^{[2
]}

Yang, Baocheng ^{[2
]}

机构：

[1] Zhengzhou Univ Light Ind, Sch Phys & Elect Engn, Zhengzhou 450002, Peoples R China

[2] Huanghe Univ Sci & Technol, Inst Nano Funct Mat, Zhengzhou 450006, Peoples R China

来源：

SOLID STATE COMMUNICATIONS | 2014年 / 192卷

关键词：

Graphene; MnO2; Binder free; Supercapacitors; GRAPHENE; OXIDE; PERFORMANCE; HYBRID; ENERGY; MORPHOLOGY; CAPACITOR; ELECTRODE; STORAGE;

D O I：

10.1016/j.ssc.2014.04.012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

MnO2 nanoplates grown on graphene sheets have been directly synthesized during the graphite oxide (GO) reduction. The synthetic method is efficient, green and controllable with GO reduced and MnO2 nanoplates formed in one step. Compared with conventional methods, this method is easier to implement without using binders or any conductive additives. The as-prepared MnO2 nanoplates and graphene composites (GM) electrodes exhibit enhanced electrochemical performances, including ultrahigh specific capacitance (385 F g(-1), at current density of 1 A g(-1)) and excellent cycling stabilities with 1 M Na2SO4 electrolytes. This improvement is due to the tighter contact between graphene sheets and MnO2 nanoplates, and the higher conductive and capacitive characteristics of graphene. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：82 / 88

页数：7

共 32 条

[1] A hybrid activated carbon-manganese dioxide capacitor using a mild aqueous electrolyte [J].

Brousse, T ;

Toupin, M ;

Bélanger, D .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (04) :A614-A622

[2] Graphene-based materials in electrochemistry [J].

Chen, Da ;

Tang, Longhua ;

Li, Jinghong .

CHEMICAL SOCIETY REVIEWS, 2010, 39 (08) :3157-3180

[3] From Graphene to Metal Oxide Nanolamellas: A Phenomenon of Morphology Transmission [J].

Chen, Sheng ;

Zhu, Junwu ;

Wang, Xin .

ACS NANO, 2010, 4 (10) :6212-6218

[4] Graphene Oxide-MnO2 Nanocomposites for Supercapacitors [J].

Chen, Sheng ;

Zhu, Junwu ;

Wu, Xiaodong ;

Han, Qiaofeng ;

Wang, Xin .

ACS NANO, 2010, 4 (05) :2822-2830

[5] One-pot synthesis of MnO2/graphene/carbon nanotube hybrid by chemical method [J].

Chen, Ying ;

Zhang, Yong ;

Geng, Dognsheng ;

Li, Ruying ;

Hong, Hanlie ;

Chen, Jingzhong ;

Sun, Xueliang .

CARBON, 2011, 49 (13) :4434-4442

[6] Graphene and nanostructured MnO2 composite electrodes for supercapacitors [J].

Cheng, Qian ;

Tang, Jie ;

Ma, Jun ;

Zhang, Han ;

Shinya, Norio ;

Qin, Lu-Chang .

CARBON, 2011, 49 (09) :2917-2925

[7] Hydrothermally synthesized RuO2/Carbon nanofibers composites for use in high-rate supercapacitor electrodes [J].

Chuang, Chih-Ming ;

Huang, Cheng-Wei ;

Teng, Hsisheng ;

Ting, Jyh-Ming .

COMPOSITES SCIENCE AND TECHNOLOGY, 2012, 72 (13) :1524-1529

[8] Preparation and characterization of manganese oxide/CNT composites as supercapacitive materials [J].

Fan, Zhen ;

Chen, Jinhua ;

Wang, Mingyong ;

Cui, Kunzai ;

Zhou, Haihui ;

Kuang, Wei .

[9] Carbon materials for the electrochemical storage of energy in capacitors [J].

Frackowiak, E ;

Béguin, F .

CARBON, 2001, 39 (06) :937-950

[10] Carbon Nanotube/Manganese Oxide Ultrathin Film Electrodes for Electrochemical Capacitors [J].

Lee, Seung Woo ;

Kim, Junhyung ;

Chen, Shuo ;

Hammond, Paula T. ;

Shao-Horn, Yang .

ACS NANO, 2010, 4 (07) :3889-3896

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