Electrokinetic Phenomena Enhanced Lithium-Ion Transport in Leaky Film for Stable Lithium Metal Anodes
- Pennsylvania State Univ., University Park, PA (United States)
The application of lithium (Li) metal anodes in Li metal batteries has been hindered by growth of Li dendrite which leads 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 homogenous 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 mA h 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 anode and high-areal-capacity LiNi0.8Co0.1Mn0.1O2 (NCM-811) (~4.2 mA h cm-2) or LiFePO4 (~3.8 mA h cm-2) as cathode shows improved cycling stability and capacity retention, even at lean electrolyte conditions.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office
- Grant/Contract Number:
- EE0007795; EE0007803
- OSTI ID:
- 1657241
- Alternate ID(s):
- OSTI ID: 1510093
- Journal Information:
- Advanced Energy Materials, Vol. 9, Issue 22; ISSN 1614-6832
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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