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Wu, Shuxing, Liu, Canbin, Dinh, Duc Anh, Hui, Kwan San 
ORCID: https://orcid.org/0000-0001-7089-7587, Hui, Kwun Nam, Yun, Je Moon and Kim, Kwang Ho
(2019)
Three-dimensional self-standing and conductive MnCO3@graphene/CNT networks for flexible asymmetric supercapacitors.
ACS Sustainable Chemistry and Engineering, 7 (11).
pp. 9763-9770.
ISSN 2168-0485
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Abstract
The practical applications of flexible supercapacitor depend strongly on the successful fabrication of advanced electrode materials with high electrochemical performance. Herein, three-dimensional conductive network-based self-standing MnCO3@graphene/CNT hybrid film fabricated through a combination of a hydrothermal method and vacuum filtration for flexible solid-state supercapacitors is reported. The MnCO3@graphene structure is embedded in a CNT network, in which monodispersed MnCO3 nanorod is well confined in graphene nanosheets. This hierarchical structure provides rapid electron/electrolyte ion transport pathways and exhibits excellent structural stability, resulting in rapid kinetics and a long life cycle. The MnCO3@graphene/CNT electrode delivers high specific capacity (467.2 F g–1 at 1 A g–1). Asymmetric supercapacitor (ASC) devices are assembled with the MnCO3@graphene/CNT film as positive electrode and activated carbon/carbon cloth as negative electrode, which exhibits a high energy density of 27 W h kg–1. Remarkably, 93% capacitance retention is obtained for the ASC devices after 6000 cycles.
| Item Type: | Article |
|---|---|
| Faculty \ School: | Faculty of Science > School of Engineering (former - to 2024) |
| UEA Research Groups: | Faculty of Science > Research Groups > Emerging Technologies for Electric Vehicles (EV) Faculty of Science > Research Groups > Energy Materials Laboratory |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 10 Jul 2019 13:31 |
| Last Modified: | 25 Sep 2024 14:12 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/71708 |
| DOI: | 10.1021/acssuschemeng.8b05935 |
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