Park, Eunseok Park, Jongseok Lee, Kyunam Zhao, Yan Zhou, Tianhong Park, Gyuleen Jeong, Min-Gi Choi, Minseok Yoo, Dong-Joo Jung, Hun-Gi Coskun, Ali Choi, Jang Wook 2022-12-04 1,2-Dimethoxyethane (DME) has been widely used as an electrolyte solvent for lithium metal batteries on account of its intrinsic reductive stability; however, its low oxidative stability presents a major challenge for use in high-voltage Li metal batteries (LMBs). In this direction, herein, we introduce a new low-dielectric solvent, 1,2-dimethoxypropane (DMP), as an electrolyte solvent. Compared to DME, DMP has decreased solvation power owing to its increased steric effects, thus promoting anion–Li+ interactions. This controlled solvation structure of the 2 M LiFSI-in-DMP electrolyte facilitated the formation of an anion-driven, stable interface at the lithium metal anode and oxidative stability for compatibility with widely adopted cathodes to afford Li|LiFePO4 and Li|LiNi0.8Co0.1Mn0.1O2 cells with decent cycling stability. These results imply the usefulness of steric control as an alternative strategy to commonly used fluorination to fine-tune the solvation power and, in general, the design of new solvents for practical lithium metal batteries. application/pdf https://folia.unifr.ch/global/documents/325196 https://folia.unifr.ch/documents/325196/files/acsenergylett.2c02003.pdf eng info:eu-repo/semantics/altIdentifier/doi/10.1021/acsenergylett.2c02003 info:eu-repo/semantics/altIdentifier/issn/2380-8195 info:eu-repo/semantics/openAccess Rights reserved ACS Energy Letters. - American Chemical Society (ACS). - 2023, vol. 8, no. 1, p. 179-188 Materials Chemistry Energy Engineering and Power Technology Fuel Technology Renewable Energy Sustainability and the Environment Chemistry (miscellaneous) Electrochemical cells Electrodes Electrolytes Solvation Solvents info:eu-repo/classification/udc/543 Exploiting the Steric Effect and Low Dielectric Constant of 1,2-Dimethoxypropane for 4.3 V Lithium Metal Batteries http://purl.org/coar/resource_type/c_6501