Ha, Son Yoon, Hyeok Jun Jung, Ji In Kim, Hayoung Won, Sukyoung Kwak, Jin Hwan Lim, Hee-Dae Jin, Hyoung-Joon Wie, Jeong Jae Yun, Young Soo 2024-01-19T14:34:36Z 2024-01-19T14:34:36Z 2021-09-05 2021-05 2405-8297 https://pubs.kist.re.kr/handle/201004/117048 The solid-electrolyte-interface (SEI) layer plays a key role in lithium ion batteries, obstructing undesirable electrolyte decomposition by selective lithium ion transport into the active electrode materials. However, lithium metal anodes (LMAs) suffer from infinite volume expansion during metal deposition/stripping cycles, where the typical 2D SEI layers have a limitation in covering three-dimensionally growing lithium metal. In this study, 3D-structured organic-inorganic hybrid SEI (3D-hyb-SEI) layers were prepared using a sulfur copolymer (SCP)-poly(sulfur-random-1,3-diisopropenylbenzene) (poly (S-r-DIB)), and carbon black (CB) mixtures. Sulfur atoms of poly(S-r-DIB) form inorganic Li2S by conversion reactions with lithium ions, and the remaining DIB molecules react with the electrolyte to form organic SEI compounds. The 3D-hyb-SEI layers guide stable and durable lithium metal deposition/dissolution cycles by protecting the 3D-structured LMA, as evident from the significantly stable and long-term cycle life over 1,000 cycles, with an average Coulombic efficiency value of similar to 99.0%. The practicability of the 3D-hyb-SEI layers was demonstrated by a full-cell test with a commercial NCM622 cathode, whereby high energy and power densities of similar to 540 Wh kg and similar to 2,840 W kg respectively, were achieved with high cycling stability. English Elsevier BV 3D-structured organic-inorganic hybrid solid-electrolyte-interface layers for Lithium metal anode Article 10.1016/j.ensm.2021.02.043 1 Energy Storage Materials, v.37, pp.567 - 575 Energy Storage Materials 37 567 575 N scie scopus 000632166600001 2-s2.0-85101816365 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article 3D-structured Protective layer SEI layer Catalytic template Metal anode Li metal batteries