AI Article Synopsis
- - This study explores using electrochemical oxidation of glycerol as a sustainable method to create valuable chemicals while improving energy efficiency in electrolysis.
- - A novel catalyst, CoNA-NiOH/NF-2, utilizing nickel (oxy)hydroxide supported cobalt nanoneedle arrays, shows enhanced performance in glycerol oxidation by increasing active sites and reducing energy consumption.
- - The catalyst achieves significant results with low voltages for current densities—demonstrating a 98% Faraday efficiency for formate production—offering a promising alternative to conventional oxygen evolution reactions (OER) in renewable energy applications.
Article Abstract
Electrochemical oxidation of glycerol into value-added chemicals represents a sustainable approach for not only valorizing biomass resources but also improving the energy efficiency of electrolysis by replacing the kinetically sluggish oxidation of water at the anode. Here, we present a nickel (oxy)hydroxide supported cobalt nanoneedle arrays catalyst (CoNA-NiOH/NF-2) for effective oxidation of glycerol. The loaded Co(OH) forms more oxygen defects, increases the active sites, and enhances the performance of glycerol oxidation. The CoNA-NiOH/NF-2 catalyst significantly reduces energy consumption by achieving a current density of 10 mA cm at a low voltage of 1.22 V vs. RHE, and 100 mA cm at 1.42 V vs. RHE, which is approximately 240 mV lower than oxygen evolution reaction (OER). Additionally, the Faraday efficiency of formate generation reached 98 %. The growth of renewable energy sources will greatly benefit from this strategy, which calls for replacing anodic OER with biomass oxidation.
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| http://dx.doi.org/10.1016/j.jcis.2024.11.194 | DOI Listing |
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