Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 23, Pages 7823-7828Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904174
Keywords
electrochemistry; electrolysis; electrolytic batteries; manganese oxide; zinc
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Funding
- Australian Research Council Discovery Project (Australian Laureate Fellowship) [FL170100154]
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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 1.95V and an imposing gravimetric capacity of about 570mAhg(-1), together with a record energy density of approximately 409Whkg(-1) when both anode and cathode active materials are taken into consideration. The cost was conservatively estimated at
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