期刊
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
卷 882, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jelechem.2021.115033
关键词
Aqueous zinc ion batteries; Anode material; MoOx; Pseudocapacitive; Molybdenum oxide
资金
- Education Department of Liaoning Province's Item [JYT19041]
- Department of Science & Technology of Liaoning Province's Item [2020-BS-173]
Monoclinic MoOx has been identified as a novel and promising pseudocapacitive anode material for aqueous zinc-ion batteries, showing excellent zinc ion storage capabilities and high cycling life at high discharge rates.
Aqueous zinc-ion batteries (AZIBs) are widely concerned and considered as promising candidates for grid-scale energy storage systems due to the simple and feasible preparation process together with the demonstrated electrochemical properties, but it is still a tremendous challenge to develop new-type anode materials which can effectively overcome the zinc dendrites formation and low utilization efficiency of the typical zinc metal anodes, not to mention the ones with outstanding rate and cycle properties. Herein, for the first time, monoclinic MoOx is verified to be a novel and promising pseudocapacitive anode material for aqueous zinc-ion batteries and the MoOx shows excellent zinc ion storage abilities-especially at 10 A g-1, including ideal average potential of 0.53 V (vs. Zn2+/Zn), high discharge/charge capacities of 82.5/82.0 mAh g-1 and cycling life of 30,000 cycles. Further, zinc ion storage mechanism of the as proposed monoclinic MoOx is also studied and deduced to be: MoOx + yZn2++2ye-ZnyMoOx.
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