{"title":"一种自支撑电极材料（NiS/NF）作为稳定高效的氧进化电催化剂：硫化镍原位表面活化成氧化镍/（氧）氢氧化物","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":5.2000,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"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\":5.2000,\"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}","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
摘要
通过碱性热硫生长机制在 NF（NiS/NF）上生长的无粘结剂硫化镍材料被用作 1.0 M KOH 中水氧化的电极材料和电极基底。研究发现，在 NiS/NF 中，硫是将硫化镍转化为氧化镍/（氧）氢氧化物的活化剂。根据 NiS/NF 的透射电子显微镜图像推断，氧化物/（氧）氢氧化物层的性质为无定形。通电后的 NiS/NF 电催化剂在 1.0 M KOH 溶液中显示出卓越的氧进化（OER）活性，最小过电位 (η) 为 290 mV @ 10 mA cm-2。此外，还利用光伏太阳能电池板在 1.54 V 的电压下制造了一个分水装置。我们的观察结果可为用于低成本氧气进化的金属-钙化物（M-S）电催化剂提供重要启示。
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
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.
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