Knowledge Management System Of Institute of process engineering,CAS
| Insight into the role of interfacial reconstruction of manganese oxides toward enhanced electrochemical capacitors | |
| Zhang, Jie1,2; Li, Wenli1,2; Hu, Dandan1; Shifa, Tofik Ahmed3; Chen, Shuaichao1; Xu, Guangwen1; Cui, Yanbin1,2 | |
| 2020-05-15 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
 |
| ISSN | 1385-8947 |
| Volume | 388Pages:9 |
| Abstract | 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. |
| Keyword | Sawtooth-shape MnO2 Activated graphene Cycling stability Asymmetric supercapacitor Interfacial reconstruction |
| DOI | 10.1016/j.cej.2020.124293 |
| Language | 英语 |
| WOS Keyword | ENERGY DENSITY ; MNO2 ; ELECTRODE ; SUPERCAPACITORS ; PERFORMANCE ; FABRICATION ; TRANSITION ; NANOSHEETS ; OXIDATION ; NANOWIRES |
| Funding Project | Fund of State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2019-A-03] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| Funding Organization | Fund of State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering, Chinese Academy of Sciences |
| WOS ID | WOS:000532784800017 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40521 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Cui, Yanbin |
| Affiliation | 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 Ctr Excellence Nanosci, CAS Key Lab Nanosyst & Hierarch Fabricat, Beijing 100190, Peoples R China |
| Recommended Citation 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. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment