Understanding the Li diffusion mechanism and positive effect of current collector volume expansion in anode free batteries

Zhuang Yan¹, Zou Zheyi¹, Lu Bo^{3, 4}, Li Yajie¹, Wang Da¹, Avdeev Maxim^{5, 6}, Shi Siqi^{1, 2, †}

(a) Distribution of Li concentration along the z direction with various values of the coupling parameter β after the 900 s diffusion. (b) Distribution of Li concentration against diffusion time t at a distance of 0.8 from the surface toward the current collector with various values of the coupling parameter β. For the convenience of comparison, both the Li concentration and diffusion distance along the z direction are normalized.