Figure 10
From: Computational studies of solid-state alkali conduction in rechargeable alkali-ion batteries
Nudged elastic band (NEB) energy path diagram for Li ion-vacancy migration in Li4P2S7 and Li4P2O7. The integer labels on the horizontal axis correspond to six vacancy sites. Activation barriers are significantly higher in the oxide than in the sulfide. Reproduced with permission from Holzwarth et al.120
