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An Environmentally Friendly and Flexible Aqueous Zinc Battery Using an Organic Cathode
Author(s) -
Guo Zhaowei,
Ma Yuanyuan,
Dong Xiaoli,
Huang Jianhang,
Wang Yonggang,
Xia Yongyao
Publication year - 2018
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201807121
Subject(s) - anode , environmentally friendly , cathode , electrolyte , separator (oil production) , battery (electricity) , materials science , supercapacitor , energy storage , aqueous solution , organic radical battery , power density , electrode , nanotechnology , chemistry , electrochemistry , power (physics) , organic chemistry , ecology , physics , quantum mechanics , biology , thermodynamics
Abstract Rechargeable batteries have been used to power various electric devices and store energy from renewables, but their toxic components (namely, electrode materials, electrolyte, and separator) generally cause serious environment issues when disused. Such toxicity characteristic makes them difficult to power future wearable electronic devices. Now an environmentally friendly and highly safe rechargeable battery, based on a pyrene‐4,5,9,10‐tetraone (PTO) cathode and zinc anode in mild aqueous electrolyte is presented. The PTO‐cathode shows a high specific capacity (336 mAh g −1 ) for Zn 2+ storage with fast kinetics and high reversibility. Thus, the PTO//Zn full cell exhibits a high energy density (186.7 Wh kg −1 ), supercapacitor‐like power behavior and long‐term lifespan (over 1000 cycles). Moreover, a belt‐shaped PTO//Zn battery with robust mechanical durability and remarkable flexibility is first fabricated to clarify its potential application in wearable electronic devices.