Figure 3

(a) TEM image of the RGO. (b) TEM image and the corresponding size distribution of the Ni(OH)2 particles. (c) TEM image of the RGO-Ni(OH)2 composite. Inset shows an annular dark field scanning TEM (ADF-STEM) image of RGO-Ni(OH)2 composite. (d) High-resolution TEM image of the RGO-Ni(OH)2 composite and SAED image of Ni(OH)2.