Oh, Jihoon Choi, Seung Ho Kim, Heejin Chung, Woo Jun Kim, Minkwan Kim, Inwoo Lee, Taeyong Lee, Jieun Kim, Dong Ok Moon, Sunung Kim, Donghoon Choi, Jang Wook 2025-06-05T08:30:38Z 2025-06-05T08:30:38Z 2025-05-29 2025-06 2380-8195 https://pubs.kist.re.kr/handle/201004/152585 The commercial viability of sulfide all-solid-state batteries (ASSBs) has been hindered by limited solvent compatibility in solution processing as sulfide solid electrolytes (SEs) degrade in polar solvents. This constraint significantly restricts binder selection, which is critical for both performance-particularly at low pressures-and processability. This study addresses this critical issue by investigating thermoplastic polyurethane (TPU) as a binder dissolved in 1,6-dichlorohexane (DCH), a solvent specifically tailored for sulfide ASSBs. TPU demonstrates outstanding adhesion properties in composite anode, cathode, and SE layers, which not only enhance the long-term cycling performance but also enable double-cast solution processing with minimal binder content for electrode-SE layer manufacturing. A silicon-graphite (Si-Gr)-based pouch-cell fabricated through this solution process maintained 80% capacity retention over 100 cycles under practical conditions (40 mu m SE layer, 25 degrees C, and 2 MPa), validating its practical feasibility. The successful implementation of this optimized solvent-binding system for solution processing represents a significant advancement toward practical ASSB technologies. English American Chemical Society Solvent-Binder Engineering for a Practically Viable Solution Process for Fabricating Sulfide-Based All-Solid-State Batteries Article 10.1021/acsenergylett.5c00762 1 ACS Energy Letters, v.10, no.6, pp.2831 - 2838 ACS Energy Letters 10 6 2831 2838 N scie scopus 001490389100001 2-s2.0-105005229409 Chemistry, Physical Electrochemistry Energy & Fuels Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Electrochemistry Energy & Fuels Science & Technology - Other Topics Materials Science Article ANODES ELECTROLYTE LITHIUM