Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/119412
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Type: Journal article
Title: An electrolytic Zn–MnO₂ battery for high-voltage and scalable energy storage
Other Titles: An electrolytic Zn-MnO(2) battery for high-voltage and scalable energy storage
Author: Chao, D.
Zhou, W.
Ye, C.
Zhang, Q.
Chen, Y.
Gu, L.
Davey, K.
Qiao, S.
Citation: Angewandte Chemie International Edition, 2019; 58(23):7823-7828
Publisher: Wiley
Issue Date: 2019
ISSN: 1433-7851
1521-3773
Statement of
Responsibility: 
Dongliang Chao, Wanhai Zhou, Chao Ye, Qinghua Zhang, Yungui Chen, Lin Gu, Kenneth Davey, Shi‐Zhang Qiao
Abstract: Zinc-based electrochemistry is attracting significant attention for practical energy storage owing to its uniqueness in terms of low cost and high safety. However, the grid-scale application is plagued by limited output voltage and inadequate energy density when compared with more conventional Li-ion batteries. Herein, we propose a latent high-voltage MnO2 electrolysis process in a conventional Zn-ion battery, and report a new electrolytic Zn-MnO2 system, via enabled proton and electron dynamics, that maximizes the electrolysis process. Compared with other Zn-based electrochemical devices, this new electrolytic Zn-MnO2 battery has a record-high output voltage of 1.95 V and an imposing gravimetric capacity of about 570 mAh g-1 , together with a record energy density of approximately 409 Wh kg-1 when both anode and cathode active materials are taken into consideration. The cost was conservatively estimated at <US$ 10 per kWh. This result opens a new opportunity for the development of Zn-based batteries, and should be of immediate benefit for low-cost practical energy storage and grid-scale applications.
Keywords: electrochemistry; electrolysis; electrolytic batteries; manganese oxide; zinc
Rights: © 2019 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim.
RMID: 0030113263
DOI: 10.1002/anie.201904174
Grant ID: http://purl.org/au-research/grants/arc/FL170100154
Appears in Collections:Chemical Engineering publications

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