期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 6, 期 23, 页码 10926-10931出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ta02747a
关键词
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资金
- Ministry of Science and Technology of China [2017YFB1104300, 2016YFA0200200]
- NSFC [51673026, 51433005, 21674056]
- NSFC-MAECI [51861135202]
- Beijing Natural Science Foundation [2152028]
- Beijing Municipal Science and Technology Commission [Z161100002116022]
Microbatteries have recently attracted considerable attention due to their small-size and high energy and voltage output. However, the commonly used non-aqueous electrolytes are flammable and sensitive to moisture and oxygen contamination. In this work, an aqueous Zn-Mn-O2 rechargeable microbattery (micro-ZMB) with good electrochemical performance is developed. By simple laser carving and electrodeposition, in-plane interdigitated current collectors and active materials are obtained. The micro-ZMB exhibits a high specific capacity of 253.8 mA h g(-1) (58.4 mu A h cm(-2)) at a current density of 0.5 A g(-1) (0.11 mA cm(-2)), approaching the level of conventional Zn-ion batteries. With proper packaging, a reversible specific capacity of 200 mA h g(-1) is achieved even after 150 cycles. Compared with microbatteries reported previously, the as-prepared micro-ZMB exhibits longer cycling stability. Considering the safety of the aqueous electrolyte and stability of the Zn metal anode, the micro-ZMB holds great promise for use in miniaturized electronic devices.
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