CAS OpenIR
Hierarchical MnO2/activated carbon cloth electrode prepared by synchronized electrochemical activation and oxidation for flexible asymmetric supercapacitors
Zhang, Jie1,2; Sun, Jiangbo1; Shifa, Tofik Ahmed3; Wang, Di1; Wu, Xiaofeng1; Cui, Yanbin1,2
2019-09-15
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume372Pages:1047-1055
AbstractDespite 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.
KeywordHierarchical MnO2 Activated carbon cloth Binder-free electrode Mixed ionic liquid Flexible solid-state supercapacitor
DOI10.1016/j.cej.2019.04.202
Language英语
WOS KeywordMANGANESE OXIDE ; ENERGY-STORAGE ; PERFORMANCE ; MNO2 ; FABRICATION ; COMPOSITES ; NANOSHEETS ; GRAPHENE ; FIBERS ; MECHANISM
Funding ProjectFund 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 Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationFund 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
WOS IDWOS:000471670400098
PublisherELSEVIER SCIENCE SA
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/29987
Collection中国科学院过程工程研究所
Corresponding AuthorWu, Xiaofeng; Cui, Yanbin
Affiliation1.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
Recommended Citation
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.
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