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Protecting the Lithium Metal Anode for a Safe Flexible Lithium‐Air Battery in Ambient Air
Author(s) -
Liu Tong,
Feng Xilan,
Jin Xin,
Shao Mingzhe,
Su Yutong,
Zhang Yu,
Zhang Xinbo
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201911229
Subject(s) - anode , battery (electricity) , materials science , electrolyte , corrosion , lithium metal , energy storage , composite number , flexibility (engineering) , chemical engineering , electrode , composite material , chemistry , engineering , power (physics) , physics , quantum mechanics , statistics , mathematics
The flexible Li‐air battery (FLAB) with ultrahigh energy density is a hopeful candidate for flexible energy storage devices. However, most current FLAB operate in a pure oxygen atmosphere, which is limited by safety and corrosion issues from the metallic lithium anode and has thus greatly impeded the application of FLAB. Now, inspired by the protection effect of the umbrella, a stable hydrophobic composite polymer electrolyte (SHCPE) film with high flexibility, hydrophobicity, and stability was fabricated to protect the lithium anode. The SHCPE mitigated lithium corrosion and improved the capacity, rate performance, and cycle life (from 24 cycles to 95 cycles) of a battery in the ambient air. Based on the protection of SHCPE and the catalysis of MnOOH, the prepared pouch‐type FLAB displayed high flexibility, stable performances, long cycling life (180 cycles), and excellent safety; the battery can bear soaking in water, high temperature, and nail penetration.