(a) Scanning electron microscope image and (b) XRD patterns of MgAl LDH precursors and the products after the calcination and carbon deposition. (c) TEM images of the calcined MgAl LDHs with a well-preserved flake morphology after being treated at a very high temperature of 950 °C. (d,e) High-resolution TEM images of graphene nanosheets cast onto the LDO flakes. The scale bar in (a,c) equals 2 μm. The scale bar in (d,e) equals 10 nm.