Brief overview of electrochemical potential in lithium ion batteries
Gao Jian1, 2, Shi Si-Qi3, 2, Li Hong1, †,
       

(a) The deviation from ideal crystallographic structure contributed by finite temperature induced entropy changing; (b) LixFePO4phase diagram: experimental phase boundary data (top panel) taken from Delacourtet al.[89]and from Doddet al.;[90]calculated (middle panel) with both Li and electron degrees of freedom and (bottom panel) with explicit Li only.[91]