Bimetallic Phosphide NiCoP Electrocatalyst Synthesized by One-Step Electrodeposition for Efficient Hydrogen Evolution in Acidic and Alkaline Solution,ACS Applied Energy Materials

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Bimetallic Phosphide NiCoP Electrocatalyst Synthesized by One-Step Electrodeposition for Efficient Hydrogen Evolution in Acidic and Alkaline Solution
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2024-08-30 , DOI: 10.1021/acsaem.4c01497
Kun Jiang ₁ , Junqi Li ₁ , Zili Zheng ₁ , Taotao Zhang ₁ , Gengqin Wang ₁ , Cang Shi ₁ , Xiaoying Hou ₁

Affiliation

Transition metals and their phosphide compounds are promising alternatives to Pt in hydrogen evolution reactions (HER), as they are abundant and cost-effective. In this study, a low-cost, efficient, and stable HER catalyst has been developed through one-step potentiostatic electrodeposition at room temperature, where metal phosphide NiCoP nanoparticles are directly grown on a carbon cloth substrate. The NiCoP/CC electrocatalyst exhibits superior HER catalytic performance than the monometallic phosphides NiP/CC and CoP/CC, proving effectiveness in acidic solutions and an alkaline environment. Notably, the NiCoP/CC catalysts exhibit excellent long-term durability at both 10 and 100 mA cm^–2. This enhanced catalytic activity is attributed to the bimetallic synergistic effect of Ni and Co, facilitating electron migration among Ni, Co, and P to optimize the electronic structure and resulting in superior performance over monometallic phosphides. Additionally, the NiCoP/CC catalysts feature unique surface characteristics including multimesoporous structures, leading to a higher specific surface area and enhanced conductivity during HER reactions. As an economical and effective HER catalyst, NiCoP/CC electrocatalysts offer a promising strategy for the development of nonprecious metal catalysts for hydrogen production on a large industrial scale.

中文翻译：

一步电沉积合成双金属磷化物 NiCoP 电催化剂，用于在酸性和碱性溶液中高效析氢

过渡金属及其磷化物是析氢反应 (HER) 中 Pt 的有前途的替代品，因为它们储量丰富且具有成本效益。在这项研究中，通过室温一步恒电位电沉积开发了一种低成本、高效且稳定的HER催化剂，其中金属磷化物NiCoP纳米颗粒直接生长在碳布基底上。 NiCoP/CC 电催化剂表现出比单金属磷化物 NiP/CC 和 CoP/CC 更优异的 HER 催化性能，在酸性溶液和碱性环境中均有效。值得注意的是，NiCoP/CC 催化剂在 10 和 100 mA cm ^–2下均表现出优异的长期耐久性。这种增强的催化活性归因于Ni和Co的双金属协同效应，促进Ni、Co和P之间的电子迁移，从而优化电子结构，从而产生优于单金属磷化物的性能。此外，NiCoP/CC 催化剂具有独特的表面特性，包括多介孔结构，可在 HER 反应过程中实现更高的比表面积和增强的电导率。作为一种经济有效的 HER 催化剂，NiCoP/CC 电催化剂为大规模工业规模制氢非贵金属催化剂的开发提供了一种有前景的策略。

更新日期：2024-08-30

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