新方案有望低成本解决全固态锂电池界面问题

Core Insights - A new low-cost solution for all-solid-state lithium batteries has been proposed by Professor Ma Cheng from the University of Science and Technology of China, addressing the challenge of maintaining good interface contact without relying on high external pressure [1] Group 1: Technical Innovations - The newly developed solid electrolyte, lithium zirconium aluminum chloride oxide, has a Young's modulus of less than 25% and hardness of less than 10% compared to other mainstream inorganic solid electrolytes, making it suitable for commercial production [2] - The solid electrolyte maintains its inorganic powder form, allowing for effective adaptation to large-scale roll-to-roll production processes [2] Group 2: Performance Improvements - The lithium zirconium aluminum chloride oxide enables the pressure required for stable cycling of all-solid-state lithium batteries to be reduced from tens or hundreds of megapascals to just 5 megapascals, achieving hundreds of stable cycles at this lower pressure [2] - The core raw material for this new electrolyte, zirconium tetrachloride, is highly economical, costing less than 5% of mainstream sulfide solid electrolytes, indicating strong commercial viability [2]