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Insight into the role of interfacial reconstruction of manganese oxides toward enhanced electrochemical capacitors

文献类型：期刊论文

作者Zhang, Jie2,3; Li, Wenli2,3; Hu, Dandan3; Shifa, Tofik Ahmed1; Chen, Shuaichao3; Xu, Guangwen3; Cui, Yanbin2,3
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2020-05-15
卷号388页码:9
关键词Sawtooth-shape MnO2 Activated graphene Cycling stability Asymmetric supercapacitor Interfacial reconstruction
ISSN号1385-8947
DOI10.1016/j.cej.2020.124293
英文摘要The pursuit of facile synthetic methods for systematic control over the morphology and crystal phase of nanostructures has attracted a tremendous amount of interest. By utilizing the acid-induced layer-to-tunnel transition method of MnO2, we here for the first time report multi-layered sawtooth-shape MnO2 with relatively high mass loading. The optimized electrode exhibits durable activity with enhanced surface area, electrical conductivity and ionic diffusion. A high areal capacitance of 1781.8 mF/cm(2) is obtained and excellent rate performance can be corroborated from capacitance retention of 64.1% when the current density is increased by 45-fold. Our uniquely assembled heterostructure endows a large number of active sites and acts as electron superhighways to facilitate efficient charge transportation. Further coupling with activated graphene/CC anode, a flexible device with a maximum operating voltage of 2.2 V is assembled, delivering a high volumetric energy density of 4.3 mWh/cm(3) at a power density of 27.6 mW/cm(3) with outstanding cycling performance. The finding promotes the development of highly efficient faradaic electrode materials toward closing the gap between achieved and theoretical capacitance without limiting the mass loading.
WOS关键词ENERGY DENSITY ; MNO2 ; ELECTRODE ; SUPERCAPACITORS ; PERFORMANCE ; FABRICATION ; TRANSITION ; NANOSHEETS ; OXIDATION ; NANOWIRES
资助项目Fund of State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2019-A-03]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000532784800017
出版者ELSEVIER SCIENCE SA
资助机构Fund of State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/40520]  
专题中国科学院过程工程研究所
通讯作者Cui, Yanbin
作者单位1.Natl Ctr Nanosci & Technol, CAS Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Jie,Li, Wenli,Hu, Dandan,et al. Insight into the role of interfacial reconstruction of manganese oxides toward enhanced electrochemical capacitors[J]. CHEMICAL ENGINEERING JOURNAL,2020,388:9.
APA Zhang, Jie.,Li, Wenli.,Hu, Dandan.,Shifa, Tofik Ahmed.,Chen, Shuaichao.,...&Cui, Yanbin.(2020).Insight into the role of interfacial reconstruction of manganese oxides toward enhanced electrochemical capacitors.CHEMICAL ENGINEERING JOURNAL,388,9.
MLA Zhang, Jie,et al."Insight into the role of interfacial reconstruction of manganese oxides toward enhanced electrochemical capacitors".CHEMICAL ENGINEERING JOURNAL 388(2020):9.

入库方式： OAI收割

来源：过程工程研究所

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