title: Recent Progress in Cobalt-Based Heterogeneous Catalysts for Electrochemical Water Splitting.
abstract: Water electrolysis is considered as the most promising technology for hydrogen production. Much research has been devoted to developing efficient electrocatalysts for hydrogen production via the hydrogen evolution reaction (HER) and oxygen production via the oxygen evolution reaction (OER). The optimum electrocatalysts can drive down the energy costs needed for water splitting via lowering the overpotential. A number of cobalt (Co)-based materials have been developed over past years as non-noble-metal heterogeneous electrocatalysts for HER and OER. Recent progress in this field is summarized here, especially highlighting several important bifunctional catalysts. Various approaches to improve or optimize the electrocatalysts are introduced. Finally, the current existing challenges and the future working directions for enhancing the performance of Co-implicated electrocatalysts are proposed.
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, Jilin, China.|National Engineering Research Center for Colloidal Materials, Shandong University, Jinan, 250100, Shandong, China.
authors.forename: Jiahai
authors.initials: J
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, Jilin, China.
authors.forename: Wei
authors.initials: W
authors.lastname: Cui
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, Jilin, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, Jilin, China.
authors.forename: Zhicai
authors.initials: Z
authors.lastname: Xing
authors.affiliation: Chemistry Department & Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Asiri
authors.affiliation: State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, 130022, Jilin, China.
authors.forename: Xuping
authors.initials: X
authors.lastname: Sun
keywords: bifunctional catalysts; cobalt-based materials; electrochemical water splitting; hydrogen evolution reaction; oxygen evolution reaction