科学家“算”出新型电池材料 能“锁住”能量充得更快

Core Insights - A research team from Tianjin University, in collaboration with Shanghai Jiao Tong University and other institutions, has predicted a new class of two-dimensional topological disulfide monolayer materials (HfTiTe4, ZrTiTe4, and HfZrTe4), providing significant theoretical support for the development of high-performance battery technologies [1][3] Group 1: Material Properties - The new two-dimensional materials exhibit rich lithium and sodium ion storage sites and ultra-fast ion transport capabilities, significantly enhancing battery fast-charging performance [3] - The theoretical capacity for lithium ion storage in these materials is 1.60 Ah per gram, while for sodium ions, it is 1.35 Ah per gram [3] - The diffusion barriers for ions in the materials are low, at 0.206 eV for lithium and 0.046 eV for sodium, outperforming many existing two-dimensional materials [3] Group 2: Stability and Efficiency - The materials possess unique chemical properties and adsorption capabilities that effectively stabilize polysulfides, mitigating the "shuttle effect" and improving battery cycle stability and charging efficiency [3] - They maintain good thermal stability and kinetic performance across a wide temperature range from room temperature to approximately 227°C, making them suitable for high-temperature applications in electric vehicles and industrial energy storage systems [4]