title: Carbon-Coated Co(3+)-Rich Cobalt Selenide Derived from ZIF-67 for Efficient Electrochemical Water Oxidation.
abstract: Oxygen evolution reaction (OER) electrocatalysts are confronted with challenges such as sluggish kinetics, low conductivity, and instability, restricting the development of water splitting. In this study, we report an efficient Co(3+)-rich cobalt selenide (Co0.85Se) nanoparticles coated with carbon shell as OER electrocatalyst, which are derived from zeolitic imidazolate framework (ZIF-67) precursor. It is proposed that the organic ligands in the ZIF-67 can effectively enrich and stabilize the Co(3+) ions in the inorganic-organic frameworks and subsequent carbon-coated nanoparticles. In alkaline media, the catalyst exhibits excellent OER performances, which are attributed to its abundant active sites, high conductivity, and superior kinetics.
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai, China.
authors.forename: Siwen
authors.initials: S
authors.lastname: Li
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai, China.
authors.forename: Sijia
authors.initials: S
authors.lastname: Peng
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai, China.
authors.forename: Linsong
authors.initials: L
authors.lastname: Huang
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai, China.
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Cui
authors.affiliation: Department of Chemistry, College of Science, King Saud University , Riyadh, Saudi Arabia.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Al-Enizi
authors.affiliation: Laboratory of Advanced Materials, Department of Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials, Fudan University , Shanghai, China.
authors.forename: Gengfeng
authors.initials: G
authors.lastname: Zheng
keywords: ZIF-67; cobalt selenide; electrocatalyst; overpotential; oxygen evolution reaction