Lee, Seon Hwa Hwang, Jang-Yeon Ming, Jun Kim, Hun Jung, Hun-Gi Sun, Yang-Kook 2024-01-19T14:31:30Z 2024-01-19T14:31:30Z 2021-10-21 2021-06-11 2380-8195 https://pubs.kist.re.kr/handle/201004/116860 Lithium batteries composed of Li-metal anodes, ester-based electrolytes, and Ni-rich Li[NixCoyMn1-x-y]O-2 (NCM) cathodes have emerged as potential candidates for next-generation energy storage technologies. However, identifying suitable electrolytes, which are highly compatible with NCM cathodes and simultaneously form stable solid electrolyte interphase (SEI) layers on Li-metal anode surfaces, is a significant challenge. Herein, we introduce a new electrolyte additive of P2S5 -saturated CS2 (PSC) solution (1 wt.%) to modify the ester-based electrolyte, and then, an ionically conductive SEI can be generated to stabilize the Li-metal significantly. We discover that the P2S5 can be solvated by the CS2, in which the solution can facilitate the in situ formation of a stable SEI containing inorganic Li-P-S compounds (Li-ion conductors, likely Li3PS4), enabling the dendrite-free and highly reversible Li-metal anode. Then, a practical battery, configured by a Li-metal anode, PSC-modified electrolyte, and a Li[Ni0.73Co0.10Mn0.15Al0.02]O-2 cathode, demonstrates high capacity, cycling stability, and Coulombic efficiency over 1500 cycles. English AMER CHEMICAL SOC FLUOROETHYLENE CARBONATE ETHER ELECTROLYTES SEI LAYER LITHIUM ANODE EFFICIENCY CATHODE Long-Lasting Solid Electrolyte Interphase for Stable Li-Metal Batteries Article 10.1021/acsenergylett.1c00661 1 ACS ENERGY LETTERS, v.6, no.6, pp.2153 - 2161 ACS ENERGY LETTERS 6 6 2153 2161 scie scopus 000662227100014 2-s2.0-85106504598 Chemistry, Physical Electrochemistry Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Science & Technology - Other Topics Materials Science Article FLUOROETHYLENE CARBONATE ETHER ELECTROLYTES SEI LAYER LITHIUM ANODE EFFICIENCY CATHODE