(a) High-resolution STEM image showing assembled spherical coronal LDH nanolamellae over the porous rGO shell. (b) FEG-SEM image shows the morphologically stable structure of final spherical coronal nanohybrids. (c) Magnified SEM micrograph showing open porous channels on the surface of the coronal hybrid. (d) High-resolution STEM image shows 3D-PG shells. (e) The Raman spectra for Co-Mn LDH@3D-PG, Ni-Mn LDH@3D-PG, and Ni-Co LDH@3D-PG are shown. (f–h) High-resolution images showing diffraction fringes matched with their respective lattice spacing for Co-Mn LDH@3D-PG, Ni-Mn LDH@3D-PG, and Ni-Co LDH@3D-PG.