{"title":"Microwave-Assisted Synthesis of Nickel Sulfide/Iron Sulfide (NiS2/Fe7S8) Rods for Oxygen Evolution Reaction","authors":"Shraddhanjali Senapati, Rajaram Bal, Bijayalaxmi Jena","doi":"10.1002/cnma.202500001","DOIUrl":null,"url":null,"abstract":"<p>Generation of hydrogen fuel from renewable sources like water via electrolysis is an effective process to produce it. For this process an efficient, inexpensive, and durable electrocatalyst is required for splitting of water molecules. Herein, a rod-shaped nickel sulfide/iron sulfide (NiS<sub>2</sub>/Fe<sub>7</sub>S<sub>8</sub>) electrocatalyst is fabricated for the water splitting reaction by the microwave method. NiS<sub>2</sub>/Fe<sub>7</sub>S<sub>8</sub> exhibits a very low overpotential of 250 and 300 mV at current densities of 25 mA cm<sup>−2</sup> (<i>η</i><sub>25</sub>) and 40 mA cm<sup>−2</sup> (<i>η</i><sub>40</sub>), respectively, and a Tafel slope value of 26 mV dec<sup>−1</sup> for oxygen evolution reaction in a basic electrolyte. It shows electrochemical stability of 45 h with low impedance and high electrochemical surface area.</p>","PeriodicalId":54339,"journal":{"name":"ChemNanoMat","volume":"11 7","pages":""},"PeriodicalIF":2.6000,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemNanoMat","FirstCategoryId":"88","ListUrlMain":"https://aces.onlinelibrary.wiley.com/doi/10.1002/cnma.202500001","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Generation of hydrogen fuel from renewable sources like water via electrolysis is an effective process to produce it. For this process an efficient, inexpensive, and durable electrocatalyst is required for splitting of water molecules. Herein, a rod-shaped nickel sulfide/iron sulfide (NiS2/Fe7S8) electrocatalyst is fabricated for the water splitting reaction by the microwave method. NiS2/Fe7S8 exhibits a very low overpotential of 250 and 300 mV at current densities of 25 mA cm−2 (η25) and 40 mA cm−2 (η40), respectively, and a Tafel slope value of 26 mV dec−1 for oxygen evolution reaction in a basic electrolyte. It shows electrochemical stability of 45 h with low impedance and high electrochemical surface area.
ChemNanoMatEnergy-Energy Engineering and Power Technology
CiteScore
6.10
自引率
2.60%
发文量
236
期刊介绍：
ChemNanoMat is a new journal published in close cooperation with the teams of Angewandte Chemie and Advanced Materials, and is the new sister journal to Chemistry—An Asian Journal.
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