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Hierarchical MnO2/activated carbon cloth electrode prepared by synchronized electrochemical activation and oxidation for flexible asymmetric supercapacitors

文献类型：期刊论文

作者Zhang, Jie1,2; Sun, Jiangbo1; Shifa, Tofik Ahmed3; Wang, Di1; Wu, Xiaofeng1; Cui, Yanbin1,2
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2019-09-15
卷号372页码:1047-1055
关键词Hierarchical MnO2 Activated carbon cloth Binder-free electrode Mixed ionic liquid Flexible solid-state supercapacitor
ISSN号1385-8947
DOI10.1016/j.cej.2019.04.202
英文摘要Despite appealing supercapacitive properties, the flexible asymmetric supercapacitor devices (FASCs) are still suffering from low mass loading and limited operating voltage, leading to unsatisfactory energy densities. Herein, we introduced a high-voltage anodic electro-deposition process (AED) which is a novel avenue enabling the synthesis of hierarchical MnO2 on activated carbon cloth (H-MnO2/ACC). Interestingly, the concomitant activation of carbon cloth substrate is found to be beneficial to improve the conductivity and hydrophilic nature of our novel electrode. A FASC based on H-MnO2/ACC-300 and reduced carbon cloth (RCC) was assembled using a mixed ionic liquid gel (ionogel) electrolyte. Benefiting from highly conductive paths derived from intimately attached fiber-MnO2 interfaces, hierarchically interpenetrated lamella MnO2 porosity and concentric MnO2 interlayer voids, as well as the merits of ionic liquid, the resultant FASC delivers an output voltage as high as 4 V and an impressive volumetric energy density of 3.82 mWh/cm(3). Furthermore, the optimized H-MnO2/ACC-300 electrode with high mass loading can even retain 94.2% of initial capacitance upon 5000 cycles in 1 M Na2SO4. The unique H-MnO2/ACC can aid in the rational design towards flexible electronic devices with high mass loading and this synthetic strategy opens up enormous possibilities for the fabrication of electrodeposited materials.
WOS关键词MANGANESE OXIDE ; ENERGY-STORAGE ; PERFORMANCE ; MNO2 ; FABRICATION ; COMPOSITES ; NANOSHEETS ; GRAPHENE ; FIBERS ; MECHANISM
资助项目Fund of State Key Laboratory of Multiphase Complex Systems, Chinese Academy of Sciences[MPCS-2017-A-11] ; Center for Mesoscience, Chinese Academy of Sciences[COM2016A003] ; Institute of Process Engineering, Chinese Academy of Sciences ; National Natural Science Foundation of China[51672273]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000471670400098
出版者ELSEVIER SCIENCE SA
资助机构Fund of State Key Laboratory of Multiphase Complex Systems, Chinese Academy of Sciences ; Center for Mesoscience, Chinese Academy of Sciences ; Institute of Process Engineering, Chinese Academy of Sciences ; National Natural Science Foundation of China
源URL[http://ir.ipe.ac.cn/handle/122111/29986]  
专题中国科学院过程工程研究所
通讯作者Wu, Xiaofeng; Cui, Yanbin
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
3.Natl Ctr Nanosci & Technol, CAS Key Lab Nanosyst & Hierarch Fabricat, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jie,Sun, Jiangbo,Shifa, Tofik Ahmed,et al. Hierarchical MnO2/activated carbon cloth electrode prepared by synchronized electrochemical activation and oxidation for flexible asymmetric supercapacitors[J]. CHEMICAL ENGINEERING JOURNAL,2019,372:1047-1055.
APA Zhang, Jie,Sun, Jiangbo,Shifa, Tofik Ahmed,Wang, Di,Wu, Xiaofeng,&Cui, Yanbin.(2019).Hierarchical MnO2/activated carbon cloth electrode prepared by synchronized electrochemical activation and oxidation for flexible asymmetric supercapacitors.CHEMICAL ENGINEERING JOURNAL,372,1047-1055.
MLA Zhang, Jie,et al."Hierarchical MnO2/activated carbon cloth electrode prepared by synchronized electrochemical activation and oxidation for flexible asymmetric supercapacitors".CHEMICAL ENGINEERING JOURNAL 372(2019):1047-1055.

入库方式： OAI收割

来源：过程工程研究所

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