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https://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.Z. |
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. |
DOI: | 10.1002/anie.201904174 |
Grant ID: | http://purl.org/au-research/grants/arc/FL170100154 |
Published version: | http://dx.doi.org/10.1002/anie.201904174 |
Appears in Collections: | Aurora harvest 4 Chemical Engineering publications |
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