fig8
Figure 8. Working mechanism of lithium anode in CFCs. (A) Schottky junction of general metal/semiconductor (left) and H2-reduced lithium anode/semiconductor (right). Copyright from Ref.[10]. (B) Energy band alignment effect for acceleration processes of p-n-n heterostructure NCAL-ZnO-SnO2 electrolyte. Copyright from Ref.[59].