Kim, Sanghyeon Choi, Jaewon Bak, Seong-Min Sang, Lingzi Li, Qun Patra, Arghya Braun, Paul, V 2024-01-19T19:33:47Z 2024-01-19T19:33:47Z 2022-01-25 2019-07 1616-301X https://pubs.kist.re.kr/handle/201004/119803 Solid-state batteries can potentially enable new classes of electrode materials which are unstable against liquid electrolytes. Here, SnS nanocrystals, synthesized by a wet chemical method, are used to fabricate a Li-ion electrode, and the electrochemical properties of this electrode are examined in both solid and liquid electrolyte designs. The SnS-based solid-state cell delivers a capacity of 629 mAh g(-1) after 100 cycles and exhibits an unprecedentedly small irreversible capacity in the first cycle (8.2%), while the SnS-based liquid cell shows a rapid capacity decay and large first cycle irreversible capacity (44.6%). Cyclic voltammetry (CV) experiments show significant solid electrolyte interphase (SEI) formation in the liquid cell during the first discharge while SEI formation by electrolyte reduction in the solid-state cell appears negligible. Along with CV, X-ray photoelectron spectroscopy and energy dispersive spectroscopy are used to investigate the differences between the solid-state and liquid cells. The reaction chemistry of SnS in solid-state cells is also studied in detail by ex situ X-ray diffraction and X-ray absorption spectroscopy. The overarching findings are that use of a solid electrolyte suppresses materials degradation and electrolyte reduction which leads to a small first cycle irreversible capacity and stable cycling. English WILEY-V C H VERLAG GMBH Reversible Conversion Reactions and Small First Cycle Irreversible Capacity Loss in Metal Sulfide-Based Electrodes Enabled by Solid Electrolytes Article 10.1002/adfm.201901719 1 ADVANCED FUNCTIONAL MATERIALS, v.29, no.27 ADVANCED FUNCTIONAL MATERIALS 29 27 N scie scopus 000478619900025 2-s2.0-85065158189 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article GRAPHENE OXIDE COMPOSITES X-RAY-DIFFRACTION ANODE MATERIAL LITHIUM PERFORMANCE BATTERY SNS NANOCOMPOSITE NANOSHEETS CATHODE all solid-state batteries irreversible capacities lithium-ion batteries metal sulfides reversible conversion reactions