SUNWODA(SZ:300207) DT新材料·2025-10-26 14:26Core Viewpoint - The article highlights the launch of a new generation polymer all-solid-state battery "Xin·Bixiao" by XWANDA, which boasts an energy density of 400Wh/kg, representing an increase of over 30% compared to current mainstream liquid lithium batteries [2][3]. Performance Enhancements - The "Xin·Bixiao" battery achieves significant improvements in several key performance metrics, including: - Energy density of 400Wh/kg and a cycle life exceeding 1200 cycles - Operating temperature range from -30℃ to 60℃, maintaining over 80% capacity at -20℃ [3] - Enhanced safety demonstrated through puncture tests and 200℃ thermal chamber tests [3] Technological Breakthroughs - XWANDA has made four critical technological advancements that contribute to the performance leap: 1. The positive electrode utilizes ultra-dense solid-state electrodes with a porosity reduced to 5%, enhancing ionic conductivity by three orders of magnitude 2. The negative electrode employs nano high-entropy materials with a specific capacity 7.2 times that of graphite anodes 3. Development of ultra-thin polymer composite electrolyte membranes that balance ionic conductivity and mechanical strength 4. Application of ultra-elastic interface coating technology to achieve high ionic conductivity and self-healing capabilities [3][4]. Industry Positioning - The company plans to establish a 0.2GWh polymer solid-state cell pilot line by the end of 2025, laying the groundwork for large-scale production [3]. - XWANDA has been engaged in solid-state battery research since 2015, adopting a multi-threaded, stepwise technological approach that includes semi-solid, soft solid, polymer solid, and sulfide systems, resulting in a comprehensive technology reserve [4]. Future Developments - The laboratory has successfully developed a lithium metal battery sample with an energy density of 520Wh/kg, showcasing ongoing innovation capabilities [3].