Highly Effective Polyacrylonitrile-Rich Artificial Solid-Electrolyte-Interphase for Dendrite-Free Li-Metal/Solid-State Battery

• DOI: 10.1021/acsami.4c16480
• Publication Date: 2024-11-06T23:41:36Z
• Authors: Binh Hoang; Roya Damircheli; Victoria Castagna...; David M Stewart; Madison Brausch; Nhi Nguyen; Chuan-Fu Lin
• Keywords: Polyacrylonitrile; Dendrite (mathematics); Interphase; Lithium metal

Lithium metal anode batteries have attracted significant attention as a promising energy storage technology, offering high theoretical specific capacity and low electrochemical potential. Utilizing lithium the material can substantially increase density compared with conventional lithium-ion batteries. However, practical application of anodes has encountered notable challenges, primarily due to formation dendritic structures during cycling. These dendrites pose safety risks degrade battery performance. Addressing these challenges necessitates development reliable effective protection layer for metal. This study presents cost-effective convenient method spontaneously produce protective layers by creating polymeric using acrylonitrile (AN). remarkably extends 6× lifetime under current (1 mA/cm2) cycling conditions. While cycle life bare is approximately 150 h conditions, AN-treated exhibit an impressive longevity over 900 h. The are further integrated tested sulfide-based Li10GeP2S12 (LGPS) solid-state electrolytes evaluate its interfacial stability at solid–solid interface. polyacrylonitrile (PAN)-rich ASEI, AN-treatment, effectively reduces stabilizes cell overpotential only one-tenth that interface without treatment. strategy paves route enable highly efficient stable Li/LGPS