A Self-Supporting Electrode Material (NiS/NF) as a Stable and Efficient Electrocatalyst for Oxygen Evolution: In Situ Surface Activation of Nickel Sulfide to Nickel Oxide/(Oxy)hydroxide
{"title":"A Self-Supporting Electrode Material (NiS/NF) as a Stable and Efficient Electrocatalyst for Oxygen Evolution: In Situ Surface Activation of Nickel Sulfide to Nickel Oxide/(Oxy)hydroxide","authors":"Murugan Vijayarangan, Arunagiri Gayathri, Venkatachalam Ashok, Muthukumaran Sangamithirai, Jayaraman Jayabharathi and Venugopal Thanikachalam*, ","doi":"10.1021/acs.energyfuels.3c04545","DOIUrl":null,"url":null,"abstract":"<p >Binder-free nickel sulfide material grown on NF (NiS/NF) by a basic thermal sulfur growth mechanic was employed as both the electrode material and electrode substrate for water oxidation in 1.0 M KOH. In NiS/NF, sulfur was found to be an activator to transform nickel sulfide to nickel oxide/(oxy)hydroxide. A transmission electron microscopy image of NiS/NF inferred that the oxide/(oxy)hydroxyl layer was found to be amorphous in nature. The energized NiS/NF electrocatalyst showed superior activity in oxygen evolution (OER) at 1.0 M KOH with a minimum overpotential (η) of 290 mV @ 10 mA cm<sup>−2</sup>. Moreover, a water-splitting device was fabricated by using a photovoltaic solar panel to split water at 1.54 V. Our observation could offer important insight into metal-chalcogenide (M-S) electrocatalysts for low-cost oxygen evolution.</p>","PeriodicalId":35,"journal":{"name":"Energy & Fuels","volume":"38 2","pages":"1364–1372"},"PeriodicalIF":5.3000,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy & Fuels","FirstCategoryId":"5","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acs.energyfuels.3c04545","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Binder-free nickel sulfide material grown on NF (NiS/NF) by a basic thermal sulfur growth mechanic was employed as both the electrode material and electrode substrate for water oxidation in 1.0 M KOH. In NiS/NF, sulfur was found to be an activator to transform nickel sulfide to nickel oxide/(oxy)hydroxide. A transmission electron microscopy image of NiS/NF inferred that the oxide/(oxy)hydroxyl layer was found to be amorphous in nature. The energized NiS/NF electrocatalyst showed superior activity in oxygen evolution (OER) at 1.0 M KOH with a minimum overpotential (η) of 290 mV @ 10 mA cm−2. Moreover, a water-splitting device was fabricated by using a photovoltaic solar panel to split water at 1.54 V. Our observation could offer important insight into metal-chalcogenide (M-S) electrocatalysts for low-cost oxygen evolution.
期刊介绍：
Energy & Fuels publishes reports of research in the technical area defined by the intersection of the disciplines of chemistry and chemical engineering and the application domain of non-nuclear energy and fuels. This includes research directed at the formation of, exploration for, and production of fossil fuels and biomass; the properties and structure or molecular composition of both raw fuels and refined products; the chemistry involved in the processing and utilization of fuels; fuel cells and their applications; and the analytical and instrumental techniques used in investigations of the foregoing areas.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
