Dendrite-Suppressed Lithium Plating from a Liquid Electrolyte via Wetting of Li3N
Journal Article
·
· Advanced Energy Materials
- Univ. of Texas, Austin, TX (United States). Texas Materials Institute; University of Texas at Austin
- Univ. of Texas, Austin, TX (United States). Texas Materials Institute
Lithium metal is an ultimate anode material to provide the highest energy density for a given cathode by providing a higher capacity and cell voltage. However, lithium is not used as the anode in commercial lithium-ion batteries because electrochemical dendrite formation and growth during charge can induce a cell short circuit that ignites the flammable liquid electrolyte. Plating of lithium through a bed of Li3N particles is shown to transform dendrite growth into a 3D lithium network formed by wetting the particle surfaces; plating through a Li3N particle is without dendrite nucleation. The Li3N particles create a higher overpotential during Li deposition than that with dendrite growth in galvanostatic charge/discharge tests. The characteristic overpotential increase is correlated with the morphological changes and a more isotropic growth behavior. The Li3N-modified Li electrode shows a stable cycling performance at 0.5 and 1.0 mA cm-2 for more than 100 cycles. In this paper, the origin of the bonding responsible for wetting of the Li3N particles by lithium and for plating through a Li3N particle is discussed.
- Research Organization:
- Univ. of Texas, Austin, TX (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- Grant/Contract Number:
- EE0007762
- OSTI ID:
- 1430485
- Alternate ID(s):
- OSTI ID: 1399054
- Journal Information:
- Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 19 Vol. 7; ISSN 1614-6832
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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