期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 62, 期 1, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202215060
关键词
Anti-Freezing; Dendrite and Side Reaction Free; Polymeric Acid Hydrogel Electrolyte; Proton Generation; Zn; PANI Batteries
资金
- National Science Foundation of China (NSFC) [51903041, 51973035, 21991123]
In this study, a polymeric acid hydrogel electrolyte was fabricated for high performance Zn/polyaniline batteries. The electrolyte showed high cycling stability and high discharge capacity in a wide temperature range, making it a promising candidate for advanced aqueous batteries.
Advanced aqueous batteries are promising for next generation flexible devices owing to the high safety, yet still requiring better cycling stability and high capacities in wide temperature range. Herein, a polymeric acid hydrogel electrolyte (PAGE) with 3 M Zn(ClO4)(2) was fabricated for high performance Zn/polyaniline (PANI) batteries. With PAGE, even at -35 degrees C the Zn/Zn symmetrical battery can keep stable for more than 1 500 h under 2 mA cm(-2), and the Zn/PANI battery can provide ultra-high stable specific capacity of 79.6 mAh g(-1) for more than 70 000 cycles at 15 A g(-1). This can be mainly ascribed to the -SO3-H+ function group in PAGE. It can generate constant protons and guide the (002) plane formation to accelerate the PANI redox reaction kinetics, increase the specific capacity, and suppress the side reaction and dendrites. This proton-supplying strategy by polymeric acid hydrogel may further propel the development of high performance aqueous batteries.
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