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Maximizing Energy Storage of Flexible Aqueous Batteries through Decoupling Charge Carriers
Author(s) -
Dai Chunlong,
Jin Xuting,
Ma Hongyun,
Hu Linyu,
Sun Guoqiang,
Chen Hao,
Yang Qiuju,
Xu Maowen,
Liu Qianwen,
Xiao Yukun,
Zhang Xinqun,
Yang Hongsheng,
Guo Qiang,
Zhang Zhipan,
Qu Liangti
Publication year - 2021
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.202003982
Subject(s) - anode , cathode , materials science , energy storage , aqueous solution , battery (electricity) , decoupling (probability) , nanotechnology , electronics , electrical engineering , chemistry , engineering , electrode , power (physics) , physics , quantum mechanics , control engineering
Flexible aqueous rechargeable batteries that integrate excellent mechanical flexibility and reliable safety hold a great promise for next‐generation wearable electronics. Unfortunately, currently available options are unsatisfactory due to their low specific capacity, limited energy density, and unstable voltage output. Herein, to overcome these challenges, high theoretical specific capacity zinc and sulfur as the anode and cathode are selected, respectively. Furthermore, a strategy is proposed, that decoupling charge carriers in anolyte and catholyte to simultaneously endow the zinc anode and sulfur cathode with optimal redox chemistry, maximizes the energy storage of flexible aqueous batteries. The new zinc–sulfur hybrid battery possesses merits of ultrahigh theoretical specific capacity (3350 mAh g S −1 ) and volumetric energy density (3868 Wh L −1 ), low cost, ecofriendliness, and ease of fabrication and is a promising next‐generation aqueous energy storage system. The fabricated flexible aqueous zinc–sulfur hybrid battery delivers a stable output voltage (release 92% of its full capacity within a small voltage drop of 0.15 V) and an ultrahigh reversible capacity of 2063 mAh g S −1 at 100 mA g S −1 , thus setting a new benchmark for flexible aqueous batteries and is promising to play a part in future flexible electronics.