Formate Electrosynthesis via Selective Ethylene Glycol Oxidation on Ni-Modified CeO2−x/NF
- 1Department of Chemistry
- 2Rice University
Abstract
Ethylene glycol oxidation reaction (EGOR) offers a route to replace the anodic oxygen evolution reaction while converting ethylene glycol into value-added products. Here, electrodeposited CeO2−x//NF and Ni-modified CeO2−x/NF were evaluated for EGOR in alkaline electrolyte. Ni modification markedly enhanced the polarization response, enabling a current density of 100 mA cm-2 at 1.61 V vs RHE without iR compensation, approximately 97 mV lower than that of the parent CeO2−x/NF electrode at the same current density. During potentiostatic EGOR at 1.8 V vs RHE in 1 M KOH containing 1 M ethylene glycol, the parent and Ni-modified electrodes sustained average current densities of 192 and 241 mA cm-2, respectively. 1H-NMR analysis identified formate as the dominant detected liquid product, with estimated formate Faradaic efficiencies of 83.2% and 92.9%, respectively. These results show that Ni modification enhances EGOR activity while maintaining efficient formate formation on CeO2−x-based electrodes.
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BibTeX
@misc{chen2026formate,
title = {{Formate Electrosynthesis via Selective Ethylene Glycol Oxidation on Ni-Modified CeO2−x/NF}},
author = {Shihui Chen},
howpublished = {ChemRxiv},
year = {2026},
month = oct,
doi = {10.26434/chemrxiv.15010824/v1},
url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010824/v1},
note = {CC BY},
}
RIS
TY - UNPB
TI - Formate Electrosynthesis via Selective Ethylene Glycol Oxidation on Ni-Modified CeO2−x/NF
AU - Shihui Chen
PY - 2026
DA - 2026/10/22
PB - ChemRxiv
DO - 10.26434/chemrxiv.15010824/v1
UR - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010824/v1
AB - Ethylene glycol oxidation reaction (EGOR) offers a route to replace the anodic oxygen evolution reaction while converting ethylene glycol into value-added products. Here, electrodeposited CeO2−x//NF and Ni-modified CeO2−x/NF were evaluated for EGOR in alkaline electrolyte. Ni modification markedly enhanced the polarization response, enabling a current density of 100 mA cm-2 at 1.61 V vs RHE without iR compensation, approximately 97 mV lower than that of the parent CeO2−x/NF electrode at the same current density. During potentiostatic EGOR at 1.8 V vs RHE in 1 M KOH containing 1 M ethylene glycol, the parent and Ni-modified electrodes sustained average current densities of 192 and 241 mA cm-2, respectively. 1H-NMR analysis identified formate as the dominant detected liquid product, with estimated formate Faradaic efficiencies of 83.2% and 92.9%, respectively. These results show that Ni modification enhances EGOR activity while maintaining efficient formate formation on CeO2−x-based electrodes.
ER -