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A Highly Flexible and Lightweight MnO 2 /Graphene Membrane for Superior Zinc‐Ion Batteries
Author(s) -
Wang Jinjin,
Wang JianGan,
Liu Huanyan,
You Zongyuan,
Li Zhen,
Kang Feiyu,
Wei Bingqing
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202007397
Subject(s) - materials science , graphene , cathode , flexible electronics , nanotechnology , electronics , durability , nanowire , energy density , wearable technology , optoelectronics , wearable computer , engineering physics , composite material , electrical engineering , computer science , embedded system , engineering
Batteries powering next‐generation flexible and wearable electronic devices require superior mechanical bendability and foldability. Herein, a self‐standing hybrid nanoarchitecture constructed by ultralong MnO 2 nanowires and graphene nanosheets as an advanced and lightweight cathodes for flexible and foldable zinc‐ion batteries (ZIBs) is designed and fabricated. The new‐designed batteries exhibit not only a high energy density of 436 Wh kg −1 based on the total cathode mass but also good 2000‐cycling durability. More importantly, the shape‐deformable ZIBs can be operated without any capacity loss under both bent and folded circumstances. The foldable ZIBs with high energy density and long lifetime hold great promise for smart and wearable electronics.