固态峰会回顾 | 产学研共议产业链协同冲刺

Core Viewpoint - The solid-state battery technology is a crucial direction for the continuous development of lithium batteries, receiving significant attention from society and supported by national policies, particularly the "14th Five-Year Plan" [8][12]. Group 1: Solid-State Battery Developments - Solid-state batteries are being developed with a target energy density of over 350Wh/kg for single cells and 260Wh/kg for system energy density, with applications in extreme environments [8]. - Current advancements include solid electrolyte materials with conductivity reaching 10mS/cm and energy density of 369.93Wh/kg, with ongoing large-capacity battery cycle tests [8]. - Research is focusing on improving ionic conductivity and mechanical properties of composite solid-state electrolytes, with room temperature ionic conductivity reaching 0.78mS/cm [9]. - Sulfide solid-state batteries are expected to increase energy density from 300Wh/kg to over 500Wh/kg by 2027, with a shift in research focus towards air stability and cost control [12]. Group 2: Safety and Production Innovations - The "quasi-solid" battery solution from Zhongtian Energy demonstrates excellent safety features, passing rigorous tests without fire or explosion, and aims to eliminate liquid leakage risks in future designs [13]. - Dazhu Lithium's focus on prototype equipment development and core module breakthroughs aims to enhance production yield, which currently stands at 60%-70% in labs and 40%-50% in pilot lines [16]. - The introduction of advanced rolling technologies by Boluwei has improved the production of dry electrodes and solid electrolyte membranes, achieving high precision and uniformity [17][19]. Group 3: Material Innovations - Xinyuan Materials has developed multi-layer solutions for solid electrolyte membranes, enhancing performance and safety in high-energy density battery designs [21]. - Yili Technology has achieved a room temperature ionic conductivity of over 17mS/cm for sulfide solid-state electrolytes, with a leading energy density of 474Wh/kg for their 20Ah solid-state cells [22]. - BlueTing New Energy is focusing on material innovation rather than price competition, introducing MOF materials to enhance lithium-ion conduction and improve battery performance [24].