Open AccessCoupling Water‐Proof Li Anodes with LiOH‐Based Cathodes Enables Highly Rechargeable Lithium–Air Batteries Operating in Ambient Air
Author(s) -
Lei Jiang,
Gao Zongyan,
Tang Linbin,
Zhong Li,
Li Junjian,
Zhang Yue,
Liu Tao
Publication year - 2022
Publication title -
advanced science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.388
H-Index - 100
ISSN - 2198-3844
DOI - 10.1002/advs.202103760
Subject(s) - cathode , anode , materials science , electrolyte , battery (electricity) , lithium iron phosphate , lithium vanadium phosphate battery , lithium (medication) , electrochemistry , chemical engineering , inorganic chemistry , chemistry , electrode , medicine , power (physics) , physics , engineering , quantum mechanics , endocrinology
Realizing an energy‐dense, highly rechargeable nonaqueous lithium–oxygen battery in ambient air remains a big challenge because the active materials of the typical high‐capacity cathode (Li 2 O 2 ) and anode (Li metal) are unstable in air. Herein, a novel lithium–oxygen full cell coupling a lithium anode protected by a composite layer of polyethylene oxide (PEO)/lithium aluminum titanium phosphate (LATP)/wax to a LiOH‐based cathode is constructed. The protected lithium is stable in air and water, and permits reversible, dendrite‐free lithium stripping/plating in a wet nonaqueous electrolyte under ambient air. The LiOH‐based full cell reaction is immune to moisture (up to 99% humidity) in air and exhibits a much better resistance to CO 2 contamination than Li 2 O 2 , resulting in a more consistent electrochemistry in the long term. The current approach of coupling a protected lithium anode with a LiOH‐based cathode holds promise for developing a long‐life, high‐energy lithium–air battery capable of operating in the ambient atmosphere.