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An Illumination‐Assisted Flexible Self‐Powered Energy System Based on a Li–O 2 Battery
Author(s) -
Yang Xiaoyang,
Feng Xilan,
Jin Xin,
Shao Mingzhe,
Yan Baolin,
Yan Junmin,
Zhang Yu,
Zhang Xinbo
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201907805
Subject(s) - battery (electricity) , overpotential , cathode , bifunctional , materials science , flexibility (engineering) , electrode , energy storage , nanotechnology , solar energy , energy harvesting , photovoltaic system , solar cell , computer science , chemical engineering , optoelectronics , energy (signal processing) , electrical engineering , chemistry , electrochemistry , engineering , catalysis , physics , power (physics) , biochemistry , statistics , mathematics , quantum mechanics
The flexible Li‐O 2 battery is suitable to satisfy the requirements of a self‐powered energy system, thanks to environmental friendliness, low cost, and high theoretical energy density. Herein, a flexible porous bifunctional electrode with both electrocatalytic and photocatalytic activity was synthesized and introduced as a cathode to assemble a high‐performance Li‐O 2 battery that achieved an overpotential of 0.19 V by charging with the aid of solar energy. As a proof‐of‐concept application, a flexible Li‐O 2 battery was constructed and integrated with a solar cell via a scalable encapsulate method to fabricate a flexible self‐powered energy system with excellent flexibility and mechanical stability. Moreover, by exploring the evolution of the electrode morphology and discharge products (Li 2 O 2 ), the charging process of the Li‐O 2 battery powered by solar energy and solar cell was demonstrated.