Claim: Cobalt oxide nanoparticle such as nanotubes, offer high surface-to-volume ratio, and is the anodes of solar-powered batteries.
Evidence: In materials and electric battery research, cobalt oxide nanoparticles usually refers to particles of cobalt(II,III) oxide Co 3O 4 of nanometer size, with various shapes and crystal structures. Hollow nanospheres of cobalt oxide have been investigated as materials for gas sensor electrodes, for the detection of toluene, acetone, and other organic vapors.