锂离子电池多物理场多尺度变形理论模型与计算方法

吴宜琨, 何杰, 杨乐, 宋维力, 陈浩森

Multiscale and multiphysics theoretical model and computational method for lithium-ion batteries

Yikun WU, Jie HE, Le YANG, Weili SONG, Haosen CHEN

图10 (a) 锂离子嵌入石墨电极的电化学反应过程；(b) 包含力学变形的数值仿真几何模型；(c) 在不同电势下溶剂重组能与层间变形之间的关系；(d) 局部介电常数和电势与层间变形之间的关系

Fig. 10 (a) Schematic of an ion intercalation and deintercalation reaction which is pictured as a process of transferring electron between the graphite electrode and lithium ion in the electrolyte solution; (b) Simulation box of the electrochemical double layer model includes the mechanical deformations; (c) The relationship between solvent reorganization energy and strain at different potentials; (d) The relationship between potential and mechanical strain