| 초록 |
LiFePO4(LFP) is one of promising active materials for LIBs because of its strengths, high thermal stability, long cycle life and low toxicity. Generally, LFP has known as a material having low Li+ diffusion coefficient and low electric conductivity. That is why primary particles of 100 to 200 nm are aggregated to form a secondary particle of 24 um. However, there are several problems to investigate the secondary particles since limited facilities and technologies. To solve the problems, herein, we built a 3D model using Comsol Multiphysics as a simulation tool using electrochemical properties of LFP secondary particle which measured in previous studies (Munakata, K. Kanamura. et al., J. of Power Souces, 2012) and analyzed properties inside the LFP secondary particle |
