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Electrochemically Exfoliated Graphene/Manganese Dioxide Nanowire Composites as Electrode Materials for Flexible Supercapacitors

文献类型：期刊论文

作者Guo, Xinfeng2; Yu, Xinling1,3; Sun, Lidong1,3; Chen, Liqing1; Liu, Cui1; Zhang, Shudong1; Wang, Zhenyang1; Chen, Lanli2; Li, Nian1
刊名AUSTRALIAN JOURNAL OF CHEMISTRY
出版日期2020-09-22
ISSN号0004-9425
DOI10.1071/CH20215
通讯作者Sun, Lidong(sld@mail.ustc.edu.cn) ; Li, Nian(linian@issp.ac.cn)
英文摘要Flexible supercapacitors are of great significance for the development of intelligent electronic products and wearable devices. Herein, through reasonable design, self-supporting flexible film composites that can be used as supercapacitor electrodes, are synthesised by vacuum filtration. The composites are composed of electrochemically exfoliated graphene nanosheets and MnO2 nanowires, in which the graphene nanosheets mainly play the role of skeleton support, enhance conductivity, and provide electric double-layer capacitance, while the MnO2 nanowires mainly provide pseudocapacitance. Results show that the sample with 20% MnO2 possesses the best electrochemical performance due to the mass ratio which can give full play to the pseudocapacitive properties of MnO2 and the conductivity of graphene. The maximum mass specific capacitance reaches 106.2 F g(-1) at 0.5A g(-1), and the areal specific capacitance is 767.0 mF cm(-2) at 1mA cm(-2). The electrode also maintains 86.7% of the initial capacitance after 10000 cycles, indicating good cyclic stability. Furthermore, an asymmetric solid supercapacitor based on flexible thin films is assembled. The energy density is 20.7Wh kg(-1), the power density is 1000Wkg(-1), and the capacitance remains 84.2% after 3000 cycles at 5.0A g(-1) . These results suggest that the as-prepared self-supporting material has the potential to be used to construct flexible supercapacitors for wearable equipment.
WOS关键词ENERGY-STORAGE ; NI FOAM ; PERFORMANCE ; GRAPHENE ; DEVICES ; OXIDE
资助项目National Natural Science Foundation of China[61605222] ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology[2017FXCX006] ; Youth 'Spark' of Chinese Academy of China[YZJJ2018QN25] ; Science and Technology Research Project of Henan Province[182102310794]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000571568600001
出版者CSIRO PUBLISHING
资助机构National Natural Science Foundation of China ; Innovative Program of the Development Foundation of Hefei Center for Physical Science and Technology ; Youth 'Spark' of Chinese Academy of China ; Science and Technology Research Project of Henan Province
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/104205]  
专题中国科学院合肥物质科学研究院
通讯作者Sun, Lidong; Li, Nian
作者单位1.Chinese Acad Sci, Inst Solid State Phys, Hefei 230031, Anhui, Peoples R China
2.Nanyang Inst Technol, Sch Elect & Elect Engn, Nanyang 473004, Henan, Peoples R China
3.Univ Sci & Technol China, Dept Chem, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Xinfeng,Yu, Xinling,Sun, Lidong,et al. Electrochemically Exfoliated Graphene/Manganese Dioxide Nanowire Composites as Electrode Materials for Flexible Supercapacitors[J]. AUSTRALIAN JOURNAL OF CHEMISTRY,2020.
APA Guo, Xinfeng.,Yu, Xinling.,Sun, Lidong.,Chen, Liqing.,Liu, Cui.,...&Li, Nian.(2020).Electrochemically Exfoliated Graphene/Manganese Dioxide Nanowire Composites as Electrode Materials for Flexible Supercapacitors.AUSTRALIAN JOURNAL OF CHEMISTRY.
MLA Guo, Xinfeng,et al."Electrochemically Exfoliated Graphene/Manganese Dioxide Nanowire Composites as Electrode Materials for Flexible Supercapacitors".AUSTRALIAN JOURNAL OF CHEMISTRY (2020).

入库方式： OAI收割

来源：合肥物质科学研究院

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