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Electrokinetic Phenomena Enhanced Lithium‐Ion Transport in Leaky Film for Stable Lithium Metal Anodes
Author(s) -
Li Guoxing,
Liu Zhe,
Wang Daiwei,
He Xin,
Liu Shuai,
Gao Yue,
AlZahrani Atif,
Kim Seong H.,
Chen LongQing,
Wang Donghai
Publication year - 2019
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201900704
Subject(s) - anode , materials science , faraday efficiency , cathode , electrolyte , electrokinetic phenomena , metal , chemical engineering , lithium (medication) , lithium metal , electrochemistry , ion , inorganic chemistry , nanotechnology , electrode , metallurgy , chemistry , medicine , engineering , organic chemistry , endocrinology
The application of lithium (Li) metal anodes in Li metal batteries has been hindered by growth of Li dendrites, which lead to short cycling life. Here a Li‐ion‐affinity leaky film as a protection layer is reported to promote a dendrite‐free Li metal anode. The leaky film induces electrokinetic phenomena to enhance Li‐ion transport, leading to a reduced Li‐ion concentration polarization and homogeneous Li‐ion distribution. As a result, the dendrite‐free Li metal anode during Li plating/stripping is demonstrated even at an extremely high deposition capacity (6 mAh cm −2 ) and current density (40 mA cm −2 ) with improved Coulombic efficiencies. A full cell battery with the leaky‐film protected Li metal as the anode and high‐areal‐capacity LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM‐811) (≈4.2 mAh cm −2 ) or LiFePO 4 (≈3.8 mAh cm −2 ) as the cathode shows improved cycling stability and capacity retention, even at lean electrolyte conditions.