Controlled synthesis of NiSe2-NiMoO4-MoO3 material on nickel foam as an efficient hydrogen evolution reaction catalyst in seawater and urea electrolytes
{"title":"Controlled synthesis of NiSe2-NiMoO4-MoO3 material on nickel foam as an efficient hydrogen evolution reaction catalyst in seawater and urea electrolytes","authors":"Hui Wang , Xiaoqiang Du , Xiaoshuang Zhang","doi":"10.1016/j.susmat.2024.e01158","DOIUrl":null,"url":null,"abstract":"<div><div>Hydrogen energy is considered as a new clean energy to replace traditional fossil energy. How to achieve large-scale industrial production has always been a problem that we are committed to studying. Hydrogen generation by electrolysis of water is considered to be one of the most effective hydrogen production approaches at present. However, with the global shortage of fresh water resources, we urgently need to prepare an efficient and low-cost seawater splitting catalyst. In this paper, the heterogeneous NiSe<sub>2</sub>-NiMoO<sub>4</sub>-MoO<sub>3</sub> material was successfully synthesized on foamed nickel substrate through hydrothermal and calcination approaches. And it showed excellent hydrogen evolution reaction (HER) performance, in 1 M KOH + seawater solution, the current density of 10 mA cm<sup>−2</sup> can be obtained with only overpotential of 105 mV. In 0.5 M urea+1 M KOH solution, a mere overpotential of 87 mV is required to drive a current density of 10 mA cm<sup>−2</sup>. In the stability test of 15 h, the activity of the catalyst material remained stable after a short decline, showing acceptable stability performance. Density functional theory (DFT) calculations proved that NiMoO<sub>4</sub> plays a major role in the reaction and their synergistic catalysis results in better catalytic activity and stability. This study proposes a novel understanding for the preparation of HER catalyst with low cost and high efficiency.</div></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sustainable Materials and Technologies","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214993724003385","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Hydrogen energy is considered as a new clean energy to replace traditional fossil energy. How to achieve large-scale industrial production has always been a problem that we are committed to studying. Hydrogen generation by electrolysis of water is considered to be one of the most effective hydrogen production approaches at present. However, with the global shortage of fresh water resources, we urgently need to prepare an efficient and low-cost seawater splitting catalyst. In this paper, the heterogeneous NiSe2-NiMoO4-MoO3 material was successfully synthesized on foamed nickel substrate through hydrothermal and calcination approaches. And it showed excellent hydrogen evolution reaction (HER) performance, in 1 M KOH + seawater solution, the current density of 10 mA cm−2 can be obtained with only overpotential of 105 mV. In 0.5 M urea+1 M KOH solution, a mere overpotential of 87 mV is required to drive a current density of 10 mA cm−2. In the stability test of 15 h, the activity of the catalyst material remained stable after a short decline, showing acceptable stability performance. Density functional theory (DFT) calculations proved that NiMoO4 plays a major role in the reaction and their synergistic catalysis results in better catalytic activity and stability. This study proposes a novel understanding for the preparation of HER catalyst with low cost and high efficiency.
期刊介绍:
Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.