Porous FeP supported on 3D nitrogen-doped carbon fibers as efficient electrocatalysts for wide-pH hydrogen evolution. Issue 4 (19th January 2022)

• Record Type: Journal Article
• Authors: Gao, Meilian; Gao, Pingping; Lei, Ting; Ouyang, Chun; Wu, Xiaobo; Wu, Anru
• Is Part Of: Sustainable energy & fuels. Volume 6:Issue 4(2022)
• Page Start: 1084
• Page End: 1093
• Publication Date: 2022-01-19
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/d1se01579f
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : A novel porous iron phosphide loading on nitrogen-doped carbon fiber/carbon paper (p-FeP/NCF/CP) as highly effective self-supporting catalysts for the hydrogen evolution reaction is synthesized by a three-step approach. Abstract : A novel porous iron phosphide (p-FeP) loading on nitrogen-doped carbon fiber/carbon paper (p-FeP/NCF/CP) as highly effective self-supporting catalysts for the hydrogen evolution reaction (HER) is synthesized by a three-step approach, including N-doped carbon fiber network preparation, porous FeOOH/NCF/CP precursor by selectively etching, and subsequent phosphorization process. The as-obtained p-FeP/NCF/CP composite exhibits a higher specific surface area and larger porosity in comparison to FeP/CP composite due to the rich porous structure and 3D network of the N-doped carbon fiber matrix (NCF). Electrochemical measurements demonstrate that p-FeP/NCF/CP composite exhibits an excellent electrocatalytic activity for HER with small overpotentials of 63 mV and 96 mV at 10 mA cm −2 current density in 0.5 M H2 SO4 and 1.0 M KOH, respectively. The p-FeP/NCF/CP material also exhibits a small Tafel slope and charge transfer resistance as well as good stability and durability in pH 7 and pH 14.