Han, Ji-Hoon Shin, Yoonju Lee, Young Joo Ahn, Sangdoo Lee, Young-Su Yi, Kyung-Woo Cho, Young Whan 2024-09-19T02:00:10Z 2024-09-19T02:00:10Z 2024-09-19 2025-03 2366-9608 https://pubs.kist.re.kr/handle/201004/150622 In all-solid-state batteries, a solid electrolyte with high ionic conductivity is required for fast charging, uniform lithium deposition, and increased cathode capacity. Lithium argyrodite with BH4 (-) substitution has promising potential due to its higher ionic conductivity compared to argyrodites substituted with halides. In this study, Li5.25PS4.25(BH4)(1.75), characterized by a high ionic conductivity of 13.8 mS cm(-1) at 25 degrees C, is synthesized via wet ball-milling employing o-xylene. The investigation focused on optimizing wet ball-milling parameters such as ball size, xylene content, drying temperature, as well as the amount of BH4 (-) substitution in argyrodite. An all-solid-state battery prepared using Li5.25PS4.25(BH4)(1.75) as the electrolyte and LiNbO3 coated NCM811 as the cathode exhibits an initial coulombic efficiency of 90.2% and maintains 93.9% of its initial capacity after 100 cycles at fast charging rate (5C). It is anticipated that the application of this wet mechanochemical synthesis will contribute further to the commercialization of all-solid-state batteries using BH4-substituted argyrodites. English WILEY-V C H VERLAG GMBH Wet Mechanochemical Synthesis of BH4-Substituted Lithium Argyrodites Article 10.1002/smtd.202401046 1 Small Methods, v.9, no.3 Small Methods 9 3 Y scie scopus 001307483800001 2-s2.0-85203067066 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article LIQUID-PHASE SYNTHESIS SOLID ELECTROLYTES CONDUCTIVITY all-solid-state batteries argyrodite lithium borohydride solid electrolyte wet mechanochemical synthesis