{"title":"非晶态钴镍硼化物促进乙醇氧化与节能制氢的电催化结合","authors":"","doi":"10.1039/d4cy00277f","DOIUrl":null,"url":null,"abstract":"<div><p>The thermodynamically more advantageous ethanol oxidation (EOR) can replace anodic oxygen evolution (OER) in electrolysis, offering a practical way to produce energy-efficient hydrogen and simultaneously upgrade biomass. Here, we design an amorphous heterogeneous catalyst composed of boride (NiCoB) and tungstate (NiCoWO<sub>4</sub>) by a simple one-step chemical reduction method. Benefiting from the amorphous structure and interactions between multiple components, the NiCoB@NiCoWO<sub>4</sub> catalyst shows superb EOR performance. Combined with a high efficiency hydrogen evolution catalyst (Pt/C), the NiCoB@NiCoWO<sub>4</sub>-assisted EOR electrolysis achieves a 19-fold increase in the H<sub>2</sub> production rate compared to water electrolysis at 1.50 V (cell voltage). Meanwhile, the catalyst oxidizes ethanol to acetic acid at the anode as a value-added by-product, which has a high Faraday efficiency surpassing 97%. The energy efficiency of chemical hydrogen production is improved by the NiCoB@NiCoWO<sub>4</sub>-catalyzed EOR, which has a 206 mV lower input voltage than the standard OER and achieves a current density of 20 mA cm<sup>−2</sup> in a three-electrode system. The present research paves the way for designing and developing efficient transition metal boride electrocatalysts for oxidative upgrading of organic molecules as well as energy-saving H<sub>2</sub> production.</p></div>","PeriodicalId":66,"journal":{"name":"Catalysis Science & Technology","volume":null,"pages":null},"PeriodicalIF":4.4000,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Amorphous cobalt–nickel borides boost electrocatalytic ethanol oxidation coupled with energy-saving hydrogen production†\",\"authors\":\"\",\"doi\":\"10.1039/d4cy00277f\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The thermodynamically more advantageous ethanol oxidation (EOR) can replace anodic oxygen evolution (OER) in electrolysis, offering a practical way to produce energy-efficient hydrogen and simultaneously upgrade biomass. Here, we design an amorphous heterogeneous catalyst composed of boride (NiCoB) and tungstate (NiCoWO<sub>4</sub>) by a simple one-step chemical reduction method. Benefiting from the amorphous structure and interactions between multiple components, the NiCoB@NiCoWO<sub>4</sub> catalyst shows superb EOR performance. Combined with a high efficiency hydrogen evolution catalyst (Pt/C), the NiCoB@NiCoWO<sub>4</sub>-assisted EOR electrolysis achieves a 19-fold increase in the H<sub>2</sub> production rate compared to water electrolysis at 1.50 V (cell voltage). Meanwhile, the catalyst oxidizes ethanol to acetic acid at the anode as a value-added by-product, which has a high Faraday efficiency surpassing 97%. The energy efficiency of chemical hydrogen production is improved by the NiCoB@NiCoWO<sub>4</sub>-catalyzed EOR, which has a 206 mV lower input voltage than the standard OER and achieves a current density of 20 mA cm<sup>−2</sup> in a three-electrode system. The present research paves the way for designing and developing efficient transition metal boride electrocatalysts for oxidative upgrading of organic molecules as well as energy-saving H<sub>2</sub> production.</p></div>\",\"PeriodicalId\":66,\"journal\":{\"name\":\"Catalysis Science & Technology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2024-07-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Catalysis Science & Technology\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/org/science/article/pii/S2044475324003356\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Catalysis Science & Technology","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S2044475324003356","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
The thermodynamically more advantageous ethanol oxidation (EOR) can replace anodic oxygen evolution (OER) in electrolysis, offering a practical way to produce energy-efficient hydrogen and simultaneously upgrade biomass. Here, we design an amorphous heterogeneous catalyst composed of boride (NiCoB) and tungstate (NiCoWO4) by a simple one-step chemical reduction method. Benefiting from the amorphous structure and interactions between multiple components, the NiCoB@NiCoWO4 catalyst shows superb EOR performance. Combined with a high efficiency hydrogen evolution catalyst (Pt/C), the NiCoB@NiCoWO4-assisted EOR electrolysis achieves a 19-fold increase in the H2 production rate compared to water electrolysis at 1.50 V (cell voltage). Meanwhile, the catalyst oxidizes ethanol to acetic acid at the anode as a value-added by-product, which has a high Faraday efficiency surpassing 97%. The energy efficiency of chemical hydrogen production is improved by the NiCoB@NiCoWO4-catalyzed EOR, which has a 206 mV lower input voltage than the standard OER and achieves a current density of 20 mA cm−2 in a three-electrode system. The present research paves the way for designing and developing efficient transition metal boride electrocatalysts for oxidative upgrading of organic molecules as well as energy-saving H2 production.
期刊介绍:
A multidisciplinary journal focusing on cutting edge research across all fundamental science and technological aspects of catalysis.
Editor-in-chief: Bert Weckhuysen
Impact factor: 5.0
Time to first decision (peer reviewed only): 31 days