Core Viewpoint - The research team from Huazhong University of Science and Technology has made significant breakthroughs in polymer-based solid-state batteries that can operate stably across a wide temperature range, addressing critical industry pain points related to low-temperature performance and high-temperature safety [2][19]. Research Background - Traditional carbonate liquid electrolytes face three major challenges: narrow voltage window (typically below 4.3V), poor temperature adaptability (operable only between -20°C to 50°C), and high safety risks due to flammability [4][5]. Key Breakthrough - The team developed a fluorinated quasi-solid polymer electrolyte using a "fluorine-oxygen co-coordination structure," which enhances lithium ion transport by creating independent pathways for ion movement, decoupling ion conduction from polymer relaxation [6][9]. Performance Characteristics - The new polymer electrolyte allows for stable operation of Li||NCM811 batteries in a temperature range from -50°C to 70°C, achieving a high ionic conductivity of 0.27 mS/cm at -40°C, significantly surpassing traditional polymer electrolytes [14]. - The battery maintains a capacity retention rate of 86% after 200 cycles at 30°C and 60 mA/g, demonstrating high rate capability and long cycle life [14]. Industry Significance - This research provides a clear technical pathway for the development of wide-temperature solid-state batteries, enhancing the potential for applications in extreme environments, such as electric vehicles in cold regions and outdoor energy storage devices [13][19]. - The findings also indicate that the co-coordination strategy can be extended to sodium-based systems, suggesting broad applicability for next-generation sodium batteries, which are a cost-effective energy storage option [12].