{"title":"Phosphate ion functionalized Ni(OH)<sub>2</sub>/Ni/MoO<sub>2</sub> composite for enhanced alkaline hydrogen evolution.","authors":"Yuyang Liu, Huiping You, Tiancheng Geng, Jing Zhang, Enlai Hu, Yining Zhang, Zhongwei Chen","doi":"10.1016/j.jcis.2025.138724","DOIUrl":null,"url":null,"abstract":"<p><p>The development of efficient electrocatalysts for hydrogen evolution reaction (HER) is important in advancing sustainable energy technologies. This work introduces a phosphate ion modified Ni(OH)<sub>2</sub>/Ni/MoO<sub>2</sub> (PNNM) composite, elaborately constructed by a one-pot electrodeposition method. The integration of heterostructure engineering and ion modification strategies significantly endows the composite with remarkable electrocatalytic performance. The prepared PNNM has excellent HER activity, with a low overpotential of 35 mV to achieve a current density of 10 mA cm<sup>-2</sup> and a favorable Tafel slope of 59.5 mV dec<sup>-1</sup>. Meanwhile, PNNM also possesses prominently long-term durability with the current density retention rate of 90.1 % after 240 h. In-situ Raman, electrochemical analysis, and theoretical calculation results reveal that the enhanced HER activity of PNNM results from the moderated hydrogen adsorption strength, robust water adsorption, and accelerated water dissociation process. This study highlights the potential of PNNM as a promising candidate for scalable alkaline hydrogen generation, offering significant advancements in renewable energy applications.</p>","PeriodicalId":351,"journal":{"name":"Journal of Colloid and Interface Science","volume":"701 ","pages":"138724"},"PeriodicalIF":9.7000,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Colloid and Interface Science","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1016/j.jcis.2025.138724","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/8/14 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The development of efficient electrocatalysts for hydrogen evolution reaction (HER) is important in advancing sustainable energy technologies. This work introduces a phosphate ion modified Ni(OH)2/Ni/MoO2 (PNNM) composite, elaborately constructed by a one-pot electrodeposition method. The integration of heterostructure engineering and ion modification strategies significantly endows the composite with remarkable electrocatalytic performance. The prepared PNNM has excellent HER activity, with a low overpotential of 35 mV to achieve a current density of 10 mA cm-2 and a favorable Tafel slope of 59.5 mV dec-1. Meanwhile, PNNM also possesses prominently long-term durability with the current density retention rate of 90.1 % after 240 h. In-situ Raman, electrochemical analysis, and theoretical calculation results reveal that the enhanced HER activity of PNNM results from the moderated hydrogen adsorption strength, robust water adsorption, and accelerated water dissociation process. This study highlights the potential of PNNM as a promising candidate for scalable alkaline hydrogen generation, offering significant advancements in renewable energy applications.
期刊介绍:
The Journal of Colloid and Interface Science publishes original research findings on the fundamental principles of colloid and interface science, as well as innovative applications in various fields. The criteria for publication include impact, quality, novelty, and originality.
Emphasis:
The journal emphasizes fundamental scientific innovation within the following categories:
A.Colloidal Materials and Nanomaterials
B.Soft Colloidal and Self-Assembly Systems
C.Adsorption, Catalysis, and Electrochemistry
D.Interfacial Processes, Capillarity, and Wetting
E.Biomaterials and Nanomedicine
F.Energy Conversion and Storage, and Environmental Technologies