Cobalt carbonate hydroxide/C: an efficient dual electrocatalyst for oxygen reduction/evolution reactions.

A novel bi-functional cobalt carbonate hydroxide supported on a carbon (CCH/C) catalyst has been synthesized via a facile hydrothermal method to meet the demand for the widespread commercialization of the energy conversion and storage technologies, which was used for the first time in ORR and OER. Furthermore, the newly discovered phase-dependent electrocatalytic ORR/OER characteristics of CCH/C are demonstrated.