Revealing In Situ Li Metal Anode Surface Evolution upon Exposure to CO 2 Using Ambient Pressure X-Ray Photoelectron Spectroscopy.

Autor: Etxebarria A; Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain.; Departamento de Física de la Materia Condensada, Facultad de Ciencia y Tecnología, Universidad del País Vasco, UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain., Yun DJ; Analytical Engineering Group, Samsung Advanced Institute of Technology, Suwon 440-600, South Korea.; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States., Blum M; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States.; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States., Ye Y; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States.; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.; Joint Center for Artificial Photosynthesis, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States., Sun M; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States., Lee KJ; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States.; Department of Physics and Photon Science, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, South Korea., Su H; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States.; Hefei National Laboratory for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China., Muñoz-Márquez MÁ; Centre for Cooperative Research on Alternative Energies (CIC energiGUNE), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, Spain., Ross PN; Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States., Crumlin EJ; Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720 United States.; Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
Jazyk: angličtina
Zdroj: ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2020 Jun 10; Vol. 12 (23), pp. 26607-26613. Date of Electronic Publication: 2020 Jun 01.
DOI: 10.1021/acsami.0c04282
Abstrakt: Because they deliver outstanding energy density, next-generation lithium metal batteries (LMBs) are essential to the advancement of both electric mobility and portable electronic devices. However, the high reactivity of metallic lithium surfaces leads to the low electrochemical performance of many secondary batteries. Besides, Li deposition is not uniform, which has been attributed to the low ionic conductivity of the anode surface. In particular, lithium exposure to CO 2 gas is considered detrimental due to the formation of carbonate on the solid electrolyte interphase (SEI). In this work, we explored the interaction of Li metal with CO 2 gas as a function of time using ambient pressure X-ray photoelectron spectroscopy to clarify the reaction pathway and main intermediates involved in the process during which oxalate formation has been detected. Furthermore, when O 2 gas is part of the surrounding environment with CO 2 gas, the reaction pathway is bypassed to directly promote carbonate as a single product.
Databáze: MEDLINE
Externí odkaz: