圆桌对话：全固态电池关键材料体系如何演变？

Core Viewpoint - The 2025 Qidian Solid-State Battery Industry Annual Conference highlighted the evolution and future of solid-state battery technologies, emphasizing the importance of collaboration among industry leaders to address challenges and explore new opportunities in the sector [2]. Group 1: Industry Trends and Perspectives - The conference gathered over 500 key players from the solid-state battery supply chain and more than 1000 high-level representatives to discuss new trends and opportunities in the industry [2]. - Experts discussed the positioning of semi-solid and solid-state batteries, suggesting that semi-solid batteries may not merely be transitional but could establish a significant market presence due to their safety and energy density advantages [4][5]. - The consensus among experts is that solid-state batteries face significant challenges, particularly regarding the solid electrolyte and interface issues, which are critical for their future commercialization [6][10]. Group 2: Material Systems and Innovations - The discussion revealed that no single material can address all challenges in solid-state battery development, leading to the exploration of composite materials to enhance performance [9]. - Various electrolyte systems, including sulfide, oxide, polymer, and halide, were examined, with each having its strengths and weaknesses, indicating a need for further innovation and modification to improve conductivity and stability [8][11]. - The potential of silicon-carbon anodes was highlighted as a promising solution for enhancing energy density and safety in solid-state batteries, with ongoing research aimed at overcoming existing challenges [10][12]. Group 3: Future Outlook - Experts expressed optimism about the future of solid-state batteries, believing that with continued collaboration and innovation, the industry can overcome current obstacles and achieve significant advancements [12]. - The need for a breakthrough in materials science was emphasized, with hopes for a versatile material that can meet the diverse requirements of solid-state battery applications [9].