Park, Jae-Ho Jeong, Jiwon Han, Daseul Kim, Jun Tae Jung, Hun-Gi Yoon, Woo Young Nam, Kyung-Wan Chung, Kyung Yoon 2026-01-15T09:30:36Z 2026-01-15T09:30:36Z 2026-01-12 2025-12 1385-8947 https://pubs.kist.re.kr/handle/201004/154028 All-solid-state lithium-ion batteries (ASSLBs) offer a promising solution to the challenges faced by conventional lithium-ion batteries, particularly their thermal instability and limited energy density. This study investigates the chemical and electrochemical stabilities of two representative solid electrolytes (SEs): glass-ceramic Li7P3S11 (LPS) and crystalline Li6PS5Cl (LPSCl), both synthesized via mechanical milling. Comprehensive characterization techniques are employed to assess their interfacial, chemical, and electrochemical properties in ASSLB configurations. While both SEs exhibit similar ionic conductivities and activation energies, LPSCl demonstrates markedly superior chemical stability under ambient conditions. In symmetric cell configurations, LPSCl significantly outperforms LPS, maintaining stable cycling for over 500 h with minimal increase in overpotential. This enhanced stability extends to composite cathodes, where LPSCl exhibits notably superior capacity retention to that of LPS. Advanced analytical methods, including electrochemical impedance spectroscopy and in situ X-ray diffraction (XRD) during charging–discharging, elucidate the superior interfacial stability of LPSCl. Moreover, temperature-dependent time-resolved XRD confirms that LPSCl maintains the structural integrity of LiNi0.5Co0.2Mn0.3O2 in composite cathodes at higher temperatures, highlighting its improved compatibility and safety for ASSLB applications. These findings provide critical insights into optimizing the composition and processing techniques to fully realize the potential of sulfide-based SEs for commercial ASSLBs. English Elsevier BV Comparative study of the stability of composite cathodes based on sulfide solid electrolytes for all-solid-state lithium-ion batteries Article 10.1016/j.cej.2025.170714 1 Chemical Engineering Journal, v.525 Chemical Engineering Journal 525 Y scie scopus 001641335200010 2-s2.0-105021475158 Engineering, Environmental Engineering, Chemical Engineering Article GLASS-CERAMIC ELECTROLYTE ARGYRODITE LI6PS5CL METAL ANODE LI7P3S11 LICOO2 PERFORMANCE LINI0.8CO0.15AL0.05O2 CONDUCTIVITY INTERFACE All-solid-state lithium-ion batteries Analytical methods Stability Composite cathodes X-ray diffraction