Core Viewpoint - Enjie Co., Ltd. has announced advancements in its ultra-thin high-strength separator technology, which significantly enhances the performance and safety of power batteries [1] Group 1: Technology Advancements - The company has optimized the polyethylene condensed structure design and combined it with low-temperature ultra-high-speed stretching technology, achieving a thickness reduction of over 28% while maintaining high strength and thermal stability [1] - The biaxial tensile strength of the separator exceeds 400 MPa, and the puncture strength reaches over 560 gf, representing an improvement of over 20% [1] - These advancements address the technical challenge of "thin being fragile," thereby enhancing the ultra-long endurance performance of power batteries [1] Group 2: Safety Improvements - The significant increase in the base film's puncture strength greatly reduces the risk of thermal runaway in battery cells, thereby improving safety [1]

Group 1 - The core point of the article is the announcement by a South Korean research team about a new silicon-based battery technology that can achieve a single charge range of 4800 km, potentially revolutionizing the electric vehicle (EV) industry [1][4][22] - Current mainstream electric vehicles have a range of 500-800 km, with extended-range models reaching over 1000 km, making the new technology a significant advancement for long-distance travel [2][4] - The silicon-based battery replaces traditional graphite anodes, with a theoretical capacity of 4200 mAh/g compared to graphite's 372 mAh/g, which is over ten times higher [5][9] Group 2 - The main challenge of silicon anodes is their significant volume expansion during charging and discharging, which can reach 300%, compared to only 10-12% for graphite, leading to potential battery life issues [6][8] - The South Korean team claims to have developed a new binder material that mitigates the expansion issue, resulting in a 25% higher energy density than traditional graphite batteries [11][12] - Despite the promising results, the transition from laboratory success to commercial production faces significant hurdles, including cost and the need for supply chain adjustments [16][17][18] Group 3 - Industry data indicates that from 2023 to 2024, domestic silicon-carbon anode material production capacity is planned to exceed 400,000 tons, with an investment of over 20 billion yuan, suggesting initial battery prices will be high and likely limited to premium models [16][17] - The new national standard for electric vehicle batteries in China, effective in 2026, requires a cycle life of at least 1500 times, which may accelerate breakthroughs in silicon-based anode technology [21] - The future landscape of power batteries is expected to feature a diverse structure with solid-state high-end, silicon-based mid-high-end, and sodium batteries at the low end over the next five years [22]