Hierarchical Porous Carbonized Co3 O4 Inverse Opals via Combined Block Copolymer and Colloid Templating as Bifunctional Electrocatalysts in Li-O2 Battery

Hierarchical Porous Carbonized Co3 O4 Inverse Opals via Combined Block Copolymer and Colloid Templating as Bifunctional Electrocatalysts in Li-O2 Battery