{"title":"碳材料对CO - p4vpy /碳选择性电还原CO催化剂CoN4Cx活性位点形成的影响","authors":"Siyuan Jia, Shoji Iguchi, Ichiro Yamanaka","doi":"10.1007/s12678-025-00945-7","DOIUrl":null,"url":null,"abstract":"<div><p>Development of active electrocatalyst for CO<sub>2</sub> reduction to useful chemicals would be essential factor to achieve the carbon neutral society. The Co poly-4-vinyl-pyridine (P4VPy)/Ketjenblack (KB) activated thermally was found for an active electrocatalyst in the electroreduction of CO<sub>2</sub> with water by the solid-polymer-electrolyte, SPE, electrolysis cell. Various carbon supports were applied instead of KB. Contents of CoN<sub>4</sub>C<sub>x</sub>, CoO and Co<sup>0</sup> compounds on activated electrocatalysts were determined by linear combination fitting, LCF, of X-ray absorption near edge structure, XANES. Pyrolysis of the catalyst precursor for activation was essential and kinds of carbon supports strongly influenced formation of the Co compounds. It was revealed that the content of CoN<sub>4</sub>C<sub>x</sub> related to the current efficiency of the CO formation and that of CoO and Co<sup>0</sup> related the H<sub>2</sub> formation.</p><h3>Graphical Abstract</h3><p>Relation between Faraday efficiency to CO and content of CoN<sub>4</sub>C<sub>x</sub></p>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"16 4","pages":"601 - 609"},"PeriodicalIF":2.8000,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-025-00945-7.pdf","citationCount":"0","resultStr":"{\"title\":\"Effects of Carbon Materials on Formation of CoN4Cx Active Site of Co-P4VPy/Carbon Catalysts for Selective CO2 Electroreduction to CO\",\"authors\":\"Siyuan Jia, Shoji Iguchi, Ichiro Yamanaka\",\"doi\":\"10.1007/s12678-025-00945-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Development of active electrocatalyst for CO<sub>2</sub> reduction to useful chemicals would be essential factor to achieve the carbon neutral society. The Co poly-4-vinyl-pyridine (P4VPy)/Ketjenblack (KB) activated thermally was found for an active electrocatalyst in the electroreduction of CO<sub>2</sub> with water by the solid-polymer-electrolyte, SPE, electrolysis cell. Various carbon supports were applied instead of KB. Contents of CoN<sub>4</sub>C<sub>x</sub>, CoO and Co<sup>0</sup> compounds on activated electrocatalysts were determined by linear combination fitting, LCF, of X-ray absorption near edge structure, XANES. Pyrolysis of the catalyst precursor for activation was essential and kinds of carbon supports strongly influenced formation of the Co compounds. It was revealed that the content of CoN<sub>4</sub>C<sub>x</sub> related to the current efficiency of the CO formation and that of CoO and Co<sup>0</sup> related the H<sub>2</sub> formation.</p><h3>Graphical Abstract</h3><p>Relation between Faraday efficiency to CO and content of CoN<sub>4</sub>C<sub>x</sub></p>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":535,\"journal\":{\"name\":\"Electrocatalysis\",\"volume\":\"16 4\",\"pages\":\"601 - 609\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2025-03-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s12678-025-00945-7.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrocatalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s12678-025-00945-7\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-025-00945-7","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Effects of Carbon Materials on Formation of CoN4Cx Active Site of Co-P4VPy/Carbon Catalysts for Selective CO2 Electroreduction to CO
Development of active electrocatalyst for CO2 reduction to useful chemicals would be essential factor to achieve the carbon neutral society. The Co poly-4-vinyl-pyridine (P4VPy)/Ketjenblack (KB) activated thermally was found for an active electrocatalyst in the electroreduction of CO2 with water by the solid-polymer-electrolyte, SPE, electrolysis cell. Various carbon supports were applied instead of KB. Contents of CoN4Cx, CoO and Co0 compounds on activated electrocatalysts were determined by linear combination fitting, LCF, of X-ray absorption near edge structure, XANES. Pyrolysis of the catalyst precursor for activation was essential and kinds of carbon supports strongly influenced formation of the Co compounds. It was revealed that the content of CoN4Cx related to the current efficiency of the CO formation and that of CoO and Co0 related the H2 formation.
Graphical Abstract
Relation between Faraday efficiency to CO and content of CoN4Cx
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Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies.
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