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电池创新熄火了吗?答案在材料里
高工锂电· 2025-11-27 11:15
Core Insights - The article emphasizes the importance of material innovation in the battery industry, particularly in achieving high safety, performance, and low cost under increasing pressure [1][2][3] - It highlights the collaborative efforts across the supply chain to enhance material structures, process compatibility, and overall industry synergy [2][3] Material Innovations - Composite current collectors are being developed to improve safety by preventing aluminum thermal reactions during thermal runaway [4][6] - The production of composite copper foil has reached a width of 1140mm with a thickness uniformity of ≤ 2%, meeting the demands for large-scale production in power batteries [7] - New lithium deposition techniques are yielding metal lithium layers with superior cycle life compared to rolled lithium, providing new solutions for solid-state systems [8] Capacity and Production - Fengyuan Lithium Energy has a current production capacity of 240,000 tons for cathode materials, with plans to expand to a total of 905,000 tons, including various lithium compounds [11][12] - The company has upgraded its phosphor lithium products to enhance both capacity and rate performance, achieving a 1C capacity of over 140mAh/g [12] Safety Enhancements - The article discusses advancements in fire-retardant materials, including a unique three-layer design for fireproof tape that activates under high temperatures [27] - A systematic approach to "zero thermal propagation" is proposed, focusing on passive safety measures to mitigate thermal runaway risks [30][31] Technological Developments - The development of in-situ polymerized electrolytes aims to enhance battery safety and longevity, with promising results in various battery systems [21] - Innovations in conductive agents, such as high-structure acetylene black, are being explored to improve conductivity while reducing costs [34][36] Market Trends - The demand for advanced materials is driven by the increasing energy density of batteries and the expansion of applications in electric vehicles and energy storage [21][28] - The article notes a significant reduction in large-scale fire incidents due to ongoing improvements in material technology and manufacturing processes [25]