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Improved Methanol-to-Formate Electrocatalytic Reaction by Engineering of Nickel Hydroxide and Iron Oxyhydroxide Heterostructures
  • Ning Jian 1, 2,   
  • Huan Ge 1, 2,   
  • Yi Ma 1, 2,   
  • Yong Zhang 1, 2,   
  • Luming Li 1, 2,   
  • Junfeng Liu 3,   
  • Jing Yu 4,   
  • Canhuang Li 4,   
  • Junshan Li 1, 2, *

Received: 08 Mar 2025 | Revised: 21 Mar 2025 | Accepted: 25 Mar 2025 | Published: 27 Mar 2025

Abstract

Electrocatalytic methanol oxidation reaction (MOR) holds significant value in the chemical industry, as it enables the treatment of methanol-containing wastewater and promotes hydrogen production from water. This study investigates a strategy based on tuning-composition of metal elements to optimize MOR performance, aiming to outperform the current cost-effective and efficient catalysts. To this end, nickel hydroxide and iron oxyhydroxide heterostructures were synthesized through a facile hydrothermal routine, and the catalytic performance of three different Ni/Fe ratios in MOR was examined in alkaline media. Among them, the material with equal Ni/Fe ratio exhibited the best catalytic activity, maintaining a high current density of ~66 mA cm−2 at 1.5 V vs. RHE in 1 M KOH electrolyte with 1 M methanol. Moreover, this developed electrode showed a Faradaic efficiency (FE) of 98.5% for formate production within a continuous 12 h test. Furthermore, density function theory (DFT) calculation was applied to unravel the methanol-to-formate conversion mechanism that was enhanced by the proper Ni/Fe ratio. These results demonstrate the high efficiency and selectivity of efficient methanol-to-formate conversion on NiFe-based materials, providing a promising a non-precious catalyst for electrocatalytic upgrading methanol to value-added formate.

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10.53941/see.2025.100003
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Volume 2, Issue 1
How to Cite
Jian, N.; Ge, H.; Ma, Y.; Zhang, Y.; Li, L.; Liu, J.; Yu, J.; Li, C.; Li, J. Improved Methanol-to-Formate Electrocatalytic Reaction by Engineering of Nickel Hydroxide and Iron Oxyhydroxide Heterostructures. Science for Energy and Environment 2025, 2 (1), 3. https://doi.org/10.53941/see.2025.100003.
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