Figure 3

FESEM images of the (a, b) Co3O4 nanowire arrays, (c, d) LT-LiCoO2 nanowire arrays and (e, f) HT-LiCoO2 nanowire arrays. (g) TEM image of a single LT-LiCoO2 nanowire (inset is an FFT image taken from one LT-LiCoO2 grain). (h) TEM image of three bundled HT-LiCoO2 nanowires. (i) HRTEM image of one HT-LiCoO2 grain (left bottom inset is the FFT image taken from the square area and right bottom inset is the Fourier filtered enlargement of the square area).