title: One-Step Electrodeposition of Co/CoP Film on Ni Foam for Efficient Hydrogen Evolution in Alkaline Solution.
abstract: The development of high-efficiency catalysts for hydrogen evolution via water splitting has been an effective strategy to solve the energy environmental problems and energy crisis. The abundant-reserving transition metals and their phosphides are becoming attractive Pt alternatives for hydrogen evolution reaction (HER). Herein, a crystalline/amorphous Co/CoP film was facilely prepared on nickel foam (NF) by a one-step electrodeposition technique at room temperature, named Co/CoP-NF. The as-prepared Co/CoP-NF electrocatalyst exhibits excellent electrocatalytic activity for HER, on par with Pt/C, showing a low overpotential of 35 mV at a current density of 10 mA·cm-2and small Tafel slope of 71 mV·dec-1in 1.0 M NaOH solution. More importantly, the Co/CoP-NF catalyst presents good long-term durability at an overpotential of 60 mV. Moreover, the influence of the electrodeposition parameters on the catalytic performance of the catalyst was discussed. This study offers an effective strategy to develop a non-noble-metal HER catalyst for industrial production of hydrogen.
authors.affiliation: School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China.
authors.forename: Ningning
authors.initials: N
authors.lastname: Bai
authors.affiliation: School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China.
authors.forename: Daoyong
authors.initials: D
authors.lastname: Mao
authors.affiliation: School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China.
authors.forename: Daikun
authors.initials: D
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Southwest University , Chongqing 400715, People's Republic of China.
authors.forename: Hongzhou
authors.initials: H
authors.lastname: Dong
keywords: alkaline solution; cobalt; cobalt phosphide; electrodeposition; hydrogen evolution reaction