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Nanomaterials 2018, 8(5), 301; https://doi.org/10.3390/nano8050301

A Hollow-Structured Manganese Oxide Cathode for Stable Zn-MnO2 Batteries

1
School of Environmental and Materials Engineering, Yantai University, Yantai 264005, China
2
Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, Beijing 100083, China
3
Hefei National Laboratory for physical Science at the Microscale, University of Science and Technology of China, Hefei 230026, China
4
Key Laboratory of Materials for Energy Conversion Chinese Academy of Sciences (CAS), Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China
*
Authors to whom correspondence should be addressed.
Received: 3 April 2018 / Revised: 26 April 2018 / Accepted: 27 April 2018 / Published: 5 May 2018
(This article belongs to the Special Issue Nanomaterials and Nanofabrication for Electrochemical Energy Storage)
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Abstract

Aqueous rechargeable zinc-manganese dioxide (Zn-MnO2) batteries are considered as one of the most promising energy storage devices for large scale-energy storage systems due to their low cost, high safety, and environmental friendliness. However, only a few cathode materials have been demonstrated to achieve stable cycling for aqueous rechargeable Zn-MnO2 batteries. Here, we report a new material consisting of hollow MnO2 nanospheres, which can be used for aqueous Zn-MnO2 batteries. The hollow MnO2 nanospheres can achieve high specific capacity up to ~405 mAh g−1 at 0.5 C. More importantly, the hollow structure of birnessite-type MnO2 enables long-term cycling stability for the aqueous Zn-MnO2 batteries. The excellent performance of the hollow MnO2 nanospheres should be due to their unique structural properties that enable the easy intercalation of zinc ions. View Full-Text
Keywords: manganese oxide; hollow structure; multivalent intercalation; zinc ion batteries manganese oxide; hollow structure; multivalent intercalation; zinc ion batteries
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Guo, X.; Li, J.; Jin, X.; Han, Y.; Lin, Y.; Lei, Z.; Wang, S.; Qin, L.; Jiao, S.; Cao, R. A Hollow-Structured Manganese Oxide Cathode for Stable Zn-MnO2 Batteries. Nanomaterials 2018, 8, 301.

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