Tuning the Anode–Electrolyte Interface Chemistry for Garnet-Based Solid-State Li Metal Batteries
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Maryland, College Park, MD (United States)
- Univ. of Maryland, College Park, MD (United States)
- Univ. of Western Ontario, London, ON (Canada)
- Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
- George Mason Univ., Fairfax, VA (United States)
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- North Carolina A & T State Univ., Greensboro, NC (United States)
Lithium (Li) metal anode is a promising candidate for high energy density solid-state batteries. However, the interface issues, including large interfacial resistance and Li dendrite generation, have always frustrated the attempt to commercialize solid-state Li metal batteries (SSLBs). Here, we report that infusing the garnet-type solid electrolytes (GSEs) with air-stable electrolyte Li3PO4 (LPO) dramatically reduces the interfacial resistance to ~1 Ω cm2 and achieves a high critical current density of 2.2 mA cm-2 under ambient condition due to enhanced interfacial stability to Li metal anode. The coated and infused LPO electrolytes not only improve the mechanical strength and Li-ion conductivity of grain boundaries, but also form a stable Li-ion conductive but electron-insulating LPO-derived solid-electrolyte interphase between Li metal and GSEs, and consequently eliminates the Li dendrites growth and prevents the direct reduction of GSEs by Li metal over a long cycle life. This interface engineering approach together with grain-boundary modification on GSEs represents a promising strategy to revolutionize the anode-electrolyte interface chemistry for SSLBs and provides new design strategy for other-types of solid-state batteries.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- Grant/Contract Number:
- SC0012704
- OSTI ID:
- 1631926
- Alternate ID(s):
- OSTI ID: 1617070
- Report Number(s):
- BNL--215968-2020-JAAM
- Journal Information:
- Advanced Materials, Journal Name: Advanced Materials Journal Issue: 23 Vol. 32; ISSN 0935-9648
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Toward garnet electrolyte–based Li metal batteries: An ultrathin, highly effective, artificial solid-state electrolyte/metallic Li interface
In situ formation of polymer-inorganic solid-electrolyte interphase for stable polymeric solid-state lithium-metal batteries