构建掺杂钼的镍铁合金 LDH/NiS 异质结构，增强整体水分离的电催化性能

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2024-11-06 DOI:10.1016/j.colsurfa.2024.135711

Zehui Liu , Jinzhao Huang , Feng Jiao , Ke Zhang , Guixin Zhao , Xiaolong Deng

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引用次数: 0

摘要

电化学水分裂被认为是一种环保、高效的制氢方法。NiFe LDH 是一种著名的氧进化电催化剂，但其在 HER 中的效果一直不尽如人意。在这项研究中，我们通过阳离子掺杂和异质表面构建 NiFe LDH，在碳布上创建了 Mo-NiFe LDH@NiS 催化剂。所制备的 Mo-NiFe LDH@NiS/CC 显示出显著的 HER 活性。此外，在用作整体水分离的双功能电极时，Mo-NiFe LDH@NiS/CC 的电池电压为 1.58 V，电流密度为 10 mA/cm²，并表现出卓越的耐久性。这项研究强调了通过掺杂钼和异质结构工程实现的镍铁合金 LDH HER 和整体水分离效率的显著提高，从而推动了其在有效水分离应用方面的潜力。

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Reinforcement of electrocatalytic overall water splitting by constructing Mo-doped NiFe LDH/NiS heterostructure

Electrochemical water splitting is considered to be an environmentally friendly and efficient method of hydrogen production. NiFe LDH is a well-known electrocatalyst for oxygen evolution, yet its effectiveness in HER has been suboptimal. In this research, we created a Mo-NiFe LDH@NiS catalyst on carbon cloth via cation doping and heterointerface construction of NiFe LDH. The resulting Mo-NiFe LDH@NiS/CC showed remarkable HER activity. Furthermore, when used as a bifunctional electrode for overall water splitting, Mo-NiFe LDH@NiS/CC operated at a cell voltage of 1.58 V at a current density of 10 mA/cm² and exhibited outstanding durability. This study emphasizes the significant enhancement in HER and overall water-splitting efficiency of NiFe LDH achieved through Mo doping and heterostructure engineering, advancing its potential for effective water splitting applications.

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.