ScholarWorks@중앙대학교

초록

Hydrogen and biomass energy are recognized as sustainable and eco-friendly alternatives to address global energy challenges. The electrocatalytic glucose conversion reaction has emerged as an effective anode process to replace the sluggish oxygen evolution reaction, thereby enhancing hydrogen production efficiency during electrochemical water splitting. In this study, a Mo-doped Ni3S2/FeNi2S4 hybrid nanocomposite was developed as a bifunctional electrocatalyst for glucose oxidation at the anode and hydrogen evolution at the cathode. Comprehensive experimental investigations demonstrate that Mo incorporation effectively tailors the electronic structure and surface chemistry of the hybrid catalyst, leading to enhanced hydroxide adsorption, increased electrochemically active surface area, and accelerated reaction kinetics. Consequently, the catalyst demonstrated superior performance, achieving a 130 mV potential saving in a full GOR–HER cell, delivering 10 mA cm–2 at 1.51 V for alkaline water splitting and 1.38 V for glucose electrolysis. The selective formation of formic acid was confirmed by NMR spectroscopy, with a glucose-to-formic acid conversion of 93.42%, yield of 96.26%, and Faradaic efficiency of 96.30%, underscoring its exceptional efficiency and selectivity. This study demonstrates the potential of Mo-doped Ni3S2/FeNi2S4 nanocomposites for sustainable hydrogen generation coupled with value-added biomass conversion.

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