Li-ion batteries: Phase transition

Hou Peiyu¹, Chu Geng², Gao Jian², Zhang Yantao¹, Zhang Lianqi^{1, †,}

(a) Phase distribution diagrams of Li_xFePO₄(0 ≤x≤ 1) established from temperature-controlled XRD data.^[50](b) Phase diagram of LiFePO₄(T, for triphylite), FePO₄(H, for heterosite), and the merging new solid solution (D, for disordered).^[51]