天津大学国家储能平台筛选出新型高性能电池材料

Core Insights - A new class of two-dimensional topological disulfide monolayer materials (HfTiTe4, ZrTiTe4, and HfZrTe4) has been predicted to exhibit significant potential in fast charging performance, cycling stability, and thermal stability for high-performance battery technology development [1][2] Group 1: Material Properties - The new materials can theoretically store 1.60 Ah of lithium ions and 1.35 Ah of sodium ions per gram, showcasing superior electrochemical performance compared to existing two-dimensional carbon and phosphorus materials [2] - Ion diffusion barriers in these materials are exceptionally low, at 0.206 eV for lithium and 0.046 eV for sodium, indicating minimal resistance to ion movement [2] Group 2: Application and Stability - The materials possess unique chemical properties that effectively "trap" polysulfides, preventing them from affecting battery stability and charging efficiency, which is a common issue in lithium-sulfur and sodium-sulfur batteries [2] - They maintain good thermal and kinetic performance from room temperature up to approximately 227°C, making them suitable for high-temperature applications such as electric vehicles in summer, industrial energy storage systems, and high-power portable electronic devices [2]