Figure 2.

SEM Images and SEI Property of the Ni Macropore Array Electrode after Li Deposition

SEM images of the Ni macropore array electrode, after discharging to (A and B) 1.0, (C and D) 3.0, (E and F) 5.0, and (G and H) 10.0 mAh cm⁻². High-resolution XPS of (I) C 1s, (J) O 1s, and (K) F 1s of the SEI layer on the Ni macropore array and Cu foil electrodes after 10 cycles at 0.5 mA cm⁻² with deposited capacity of 1.0 mAh cm⁻² at Li plating state.