Health & Environmental Research Online (HERO)


Print Feedback Export to File
5927833 
Journal Article 
An Electrolytic Zn-MnO2 Battery for High-Voltage and Scalable Energy Storage 
Chao, D; Zhou, W; Ye, C; Zhang, Q; Chen, Y; Gu, L; Davey, K; Qiao, SZ 
2019 
Yes 
Angewandte Chemie (International Edition)
ISSN: 1433-7851
EISSN: 1521-3773 
58 
23 
7823-7828 
English 
30972886 
WOS:000474804800049 
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