Skip to main content
placeholder image

Coupling efficient biomass upgrading with H2 production: Via bifunctional CuxS@NiCo-LDH core-shell nanoarray electrocatalysts

Journal Article


Abstract


  • To boost hydrogen production from water splitting, the electrochemical oxidation of biomass-derived molecules to produce valuable chemicals is regarded as a promising approach to replace the kinetically sluggish oxygen evolution reaction. Herein, copper sulfide nanowire@NiCo-layered double hydroxide (LDH) nanosheet core-shell nanoarrays are fabricated as efficient bifunctional electrocatalysts for 5-hydroxymethylfurfural (HMF) oxidation and water reduction to simultaneously produce value-added 2,5-furandicarboxylic acid (FDCA) and hydrogen fuel with less energy consumption. Benefiting from the fast charge transfer induced by the CuxS core, the Co/Ni interaction in the LDH nanosheet layer and the open nanostructure, the optimized catalysts exhibit superior electrocatalytic activity (record-high 87 mA cm-2 @ 1.3 V vs. RHE for HMF oxidation; η = 107 mV @ 10 mA cm-2 for HER) and durability; the faradaic efficiency towards FDCA and H2 is close to unity. The bifunctional two-electrode electrolyzer only requires a low voltage of 1.34 V to co-generate H2 and FDCA at 10 mA cm-2. This work highlights the significance of tuning the redox properties of transition metals and constructing nanoarray electrocatalysts towards more efficient energy utilization.

Publication Date


  • 2020

Citation


  • Deng, X., Kang, X., Li, M., Xiang, K., Wang, C., Guo, Z. P., . . . Luo, J. L. (2020). Coupling efficient biomass upgrading with H2 production: Via bifunctional CuxS@NiCo-LDH core-shell nanoarray electrocatalysts. Journal of Materials Chemistry A, 8(3), 1138-1146. doi:10.1039/c9ta06917h

Scopus Eid


  • 2-s2.0-85078704172

Start Page


  • 1138

End Page


  • 1146

Volume


  • 8

Issue


  • 3

Abstract


  • To boost hydrogen production from water splitting, the electrochemical oxidation of biomass-derived molecules to produce valuable chemicals is regarded as a promising approach to replace the kinetically sluggish oxygen evolution reaction. Herein, copper sulfide nanowire@NiCo-layered double hydroxide (LDH) nanosheet core-shell nanoarrays are fabricated as efficient bifunctional electrocatalysts for 5-hydroxymethylfurfural (HMF) oxidation and water reduction to simultaneously produce value-added 2,5-furandicarboxylic acid (FDCA) and hydrogen fuel with less energy consumption. Benefiting from the fast charge transfer induced by the CuxS core, the Co/Ni interaction in the LDH nanosheet layer and the open nanostructure, the optimized catalysts exhibit superior electrocatalytic activity (record-high 87 mA cm-2 @ 1.3 V vs. RHE for HMF oxidation; η = 107 mV @ 10 mA cm-2 for HER) and durability; the faradaic efficiency towards FDCA and H2 is close to unity. The bifunctional two-electrode electrolyzer only requires a low voltage of 1.34 V to co-generate H2 and FDCA at 10 mA cm-2. This work highlights the significance of tuning the redox properties of transition metals and constructing nanoarray electrocatalysts towards more efficient energy utilization.

Publication Date


  • 2020

Citation


  • Deng, X., Kang, X., Li, M., Xiang, K., Wang, C., Guo, Z. P., . . . Luo, J. L. (2020). Coupling efficient biomass upgrading with H2 production: Via bifunctional CuxS@NiCo-LDH core-shell nanoarray electrocatalysts. Journal of Materials Chemistry A, 8(3), 1138-1146. doi:10.1039/c9ta06917h

Scopus Eid


  • 2-s2.0-85078704172

Start Page


  • 1138

End Page


  • 1146

Volume


  • 8

Issue


  • 3