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Mno2 heterostructure on carbon nanotubes as cathode material for aqueous zinc-ion batteries
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Metadata
Document Title
Mno2 heterostructure on carbon nanotubes as cathode material for aqueous zinc-ion batteries
Author
Khamsanga S., Nguyen M.T., Yonezawa T., Thamyongkit P., Pornprasertsuk R., Pattananuwat P., Tuantranont A., Siwamogsatham S., Kheawhom S.
Name from Authors Collection
Scopus Author ID
8532633300
Affiliations
Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand; Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University, Hokkaido, 060-8628, Japan; Institute of Business-Regional Collaborations, Hokkaido University, Hokkaido, 001-0021, Japan; Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand; Center of Excellence in Petrochemical and Materials Technology, Chulalongkorn University, Bangkok, 10330, Thailand; Research Unit of Advanced Materials for Energy Storage, Chulalongkorn University, Bangkok, 10330, Thailand; National Science and Technology Development Agency, Pathumthani, 12120, Thailand
Type
Article
Source Title
International Journal of Molecular Sciences
ISSN
16616596
Year
2020
Volume
21
Issue
13
Open Access
Gold, Green
Publisher
MDPI AG
DOI
10.3390/ijms21134689
Abstract
Due to their cost effectiveness, high safety, and eco-friendliness, zinc-ion batteries (ZIBs) are receiving much attention nowadays. In the production of rechargeable ZIBs, the cathode plays an important role. Manganese oxide (MnO2) is considered the most promising and widely investigated intercalation cathode material. Nonetheless, MnO2 cathodes are subjected to challenging issues viz. limited capacity, low rate capability and poor cycling stability. It is seen that the MnO2 heterostructure can enable long-term cycling stability in different types of energy devices. Herein, a versatile chemical method for the preparation of MnO2 heterostructure on multi-walled carbon nanotubes (MNH-CNT) is reported. Besides, the synthesized MNH-CNT is composed of δ- MnO2 and γ-MnO2. A ZIB using the MNH-CNT cathode delivers a high initial discharge capacity of 236 mAh g−1 at 400 mA g−1, 108 mAh g−1 at 1600 mA g−1 and excellent cycling stability. A pseudocapacitive behavior investigation demonstrates fast zinc ion diffusion via a diffusion-controlled process with low capacitive contribution. Overall, the MNH-CNT cathode is seen to exhibit superior electrochemical performance. This work presents new opportunities for improving the discharge capacity and cycling stability of aqueous ZIBs. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Keyword
Carbon nanotubes | Cathode | Heterostructure | Manganese oxide | Zinc-ion battery
Funding Sponsor
Japan Science and Technology Agency; Chulalongkorn University; National Science and Technology Development Agency
License
CC BY
Rights
Author
Publication Source
Scopus