Modulation of hydrogen evolution reaction (HER) activity in palladium catalyst through surface functionalization of carbon support

IF 10.5 2区材料科学 Q1 CHEMISTRY, PHYSICAL

Carbon Pub Date : 2025-04-17 DOI:10.1016/j.carbon.2025.120348

Zaynab Atyf, Mouhieddinne Guergueb, Quentin Lenne, Jalal Ghilane

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Abstract

This study explores the use of interface engineering to develop efficient and stable electrocatalysts for electrochemical hydrogen production. The process involves the electrochemical immobilization of an ionic organic layer containing heteroatoms on a carbon support, which is subsequently used for metal electrodeposition. Specifically, the amino derivative, 2-(N-(3-aminophenyl)-N-methylsulfamoyl)ethylsulfate potassium, was grafted onto a carbon electrode by the electrochemical reduction of an in situ generated diazonium compound. Electrochemical and surface analyses confirmed the successful immobilization of an ionic layer containing nitrogen and sulfur. The generated surfaces were then used to host an electrochemically deposited palladium catalyst. The hybrid electrocatalyst exhibited significant HER activity and stability, with only 60 mV overpotential required to achieve a current density of 10 mA cm⁻², and 400 mV to reach 1 A cm⁻². This work presents a promising approach for the design of hybrid HER electrocatalysts through judicious surface functionalization of carbon supports.

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碳载体表面功能化对钯催化剂析氢反应活性的调控

本研究探索利用界面工程技术开发高效稳定的电化学制氢电催化剂。该工艺包括在碳载体上电化学固定含有杂原子的离子有机层，随后用于金属电沉积。具体来说，氨基衍生物2-（N-（3-氨基苯基）-N-甲基磺胺酰基）硫酸乙基钾通过原位生成的重氮化合物的电化学还原接枝到碳电极上。电化学和表面分析证实了含有氮和硫的离子层的成功固定。生成的表面然后用于承载电化学沉积的钯催化剂。该杂化电催化剂表现出显著的HER活性和稳定性，只需60 mV过电位即可达到10 mA cm−2的电流密度，400 mV即可达到1 a cm−2的电流密度。这项工作提出了一种很有前途的方法，通过明智的碳载体的表面功能化设计混合HER电催化剂。

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来源期刊

Carbon 工程技术-材料科学：综合

CiteScore

20.80

自引率

7.30%

发文量

审稿时长

23 days

期刊介绍： The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.