Interfacial Issues and Modification of Solid Electrolyte Interphase for Li Metal Anode in Liquid and Solid Electrolytes. Issue 14 (24th February 2023)

• Record Type: Journal Article
• Authors: Chae, Oh B.; Lucht, Brett L.
• Is Part Of: Advanced energy materials. Volume 13:Issue 14(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-02-24
• Subjects: interface -- liquid electrolytes -- lithium metal anodes -- solid electrolytes -- solid electrolyte interphase; Energy harvesting -- Materials -- Periodicals; Energy conversion -- Materials -- Periodicals; Energy storage -- Materials -- Periodicals; Photovoltaics -- Periodicals; Fuel cells -- Periodicals; Thermoelectric materials -- Periodicals; 621.31
• DOI: 10.1002/aenm.202203791
• Languages: English
• ISSNs: 1614-6832

Abstract

Abstract: The high energy density required for the next generation of lithium batteries will likely be enabled by a shift toward lithium metal anode from the conventional intercalation‐based anode such as graphite. However, several critical challenges for Li metal originate from its highly reactive nature and the hostless reaction of deposition and stripping impede the practical use of Li metal as an anode. The role of the solid electrolyte interphase (SEI) is very important for the Li metal anode where the SEI must protect the dynamically changing surface of the Li metal. Since the SEI‐generating reaction mechanisms for the two different electrolyte systems, liquid and solid, are considerably different, the SEI layers formed between the Li metal and the electrolytes in the two electrolyte systems have substantially different properties, causing different interfacial issues. Inhibition of the interfacial problems requires different strategies to reinforce the SEI layer for each of the electrolyte systems. However, the differences in the two electrolyte systems have not been clearly compared in the prior literature. In this report, the interfacial issues for the two different electrolyte systems are compared and different strategies for SEI modification are provided to overcome the issues. Abstract : Lithium metal anodes face different interfacial issues in liquid electrolyte and solid electrolyte systems. To overcome the interfacial problems, modification strategies of solid electrolyte interphases (SEI) should be different in each system. This perspective article illuminates the interfacial issues and discusses the strategies of SEI modification in each electrolyte system.