Coupling overall water splitting and biomass oxidation via Fe-doped Ni2P@C nanosheets at large current density
Li, Di 1Li, Zengyong 1Zou, Ren 1Shi, Ge 1Huang, Yiming 1Yang, Wu 1Yang, Wang 1Liu, Chuanfu 1Peng, Xinwen1
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作者信息
1. South China Univ Technol
折叠
Abstract
Developing efficient bifunctional electrocatalyst for overall water splitting and conversion of biomass into value-added products at large current density is essential but challenging. Herein, a hierarchical Fe-doped Ni2P nanosheets hybridized with C on Ni foam (Fe-Ni2P@C/NF) was developed as a robust bifunctional catalyst with excellent catalytic activity for hydrogen evolution reaction (HER) with overpotentials of 75 and 313 mV at 10 and 1000 mA cm(-2), respectively, and as well as for OER with a lower overpotential of 269 mV at 400 mA cm(-2). Particularly, the integrated double-electrode electrolyzer for simultaneous HER and biomass-derived mono-saccharide oxidation reaction (MOR) using Fe-Ni2P@C/NF only requires a low voltage of 1.55 V to drive a current density of 100 mA cm(-2). Meanwhile, the value-added lactic acid is obtained at the anode. This strategy of coupling biomass oxidation to promote H-2 production can significantly reduce energy consumption and obtain additional high value-added products.
Key words
Bifunctional electrocatalysts/Overall water splitting/Biomass monosaccharide oxidation/DFT calculation/HYDROGEN-PRODUCTION/LACTIC-ACID/HIGHLY EFFICIENT/ACTIVE ELECTROCATALYST/CATALYTIC CONVERSION/EVOLUTION/NANOPARTICLES/ALKALINE/PHOSPHIDE
NSTL
Elsevier