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- Title
Electrokinetic Phenomena Enhanced Lithium‐Ion Transport in Leaky Film for Stable Lithium Metal Anodes.
- Authors
Li, Guoxing; Liu, Zhe; Wang, Daiwei; He, Xin; Liu, Shuai; Gao, Yue; AlZahrani, Atif; Kim, Seong H.; Chen, Long‐Qing; Wang, Donghai
- Abstract
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 LiNi0.8Co0.1Mn0.1O2 (NCM‐811) (≈4.2 mAh cm−2) or LiFePO4 (≈3.8 mAh cm−2) as the cathode shows improved cycling stability and capacity retention, even at lean electrolyte conditions.
- Subjects
LITHIUM ions; ANODES; LITHIUM; METALS; DENSITY currents
- Publication
Advanced Energy Materials, 2019, Vol 9, Issue 22, pN.PAG
- ISSN
1614-6832
- Publication type
Article
- DOI
10.1002/aenm.201900704