Weiwei Quan , Yuxi Hou , Jiajun Luo , Dongquan Yang , Yingbin Lin , Zhensheng Hong , Yiyin Huang , Hurong Yao , Rui Yang
{"title":"钌-钴纳米氧化物耦合剂具有增强的水解离氧化功能","authors":"Weiwei Quan , Yuxi Hou , Jiajun Luo , Dongquan Yang , Yingbin Lin , Zhensheng Hong , Yiyin Huang , Hurong Yao , Rui Yang","doi":"10.1016/j.apcata.2024.119795","DOIUrl":null,"url":null,"abstract":"<div><p>Heterogeneous oxide couplers represent a type of emerging composite materials with inherently outstanding interface properties for electrocatalytic applications. In this study, we fabricate a Ru-Co nano-oxide coupler that enables internal electron transfer between Ru and Co elements. The catalyst exhibits superior oxygen evolution reaction (OER) performance compared to commercial RuO<sub>2</sub>, with mere 260 mV overpotential at 10 mA cm<sup>−2</sup>. The exchange current density (i<sub>0</sub>) for RuO<sub>2/</sub>Co<sub>3</sub>O<sub>4</sub> is enhanced by three orders of magnitude compared to commercial RuO<sub>2</sub>. Electrochemical characterizations and computational analysis reveal that the coupling of Co<sub>3</sub>O<sub>4</sub> and RuO<sub>2</sub> enhances the surface's capability for water dissociation on the interface Ru sites, thereby initiating OER. The exceptional performance of RuO<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> enables water splitting via a single-cell AA battery configuration that utilizes a RuO<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> anode || Pt/C cathode setup. This accomplishment underscores the potential of RuO<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> for effective and sustainable electrochemical water splitting applications.</p></div>","PeriodicalId":243,"journal":{"name":"Applied Catalysis A: General","volume":null,"pages":null},"PeriodicalIF":4.7000,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Ruthenium-cobalt nano-oxide coupler with enhanced water dissociation for oxidation\",\"authors\":\"Weiwei Quan , Yuxi Hou , Jiajun Luo , Dongquan Yang , Yingbin Lin , Zhensheng Hong , Yiyin Huang , Hurong Yao , Rui Yang\",\"doi\":\"10.1016/j.apcata.2024.119795\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Heterogeneous oxide couplers represent a type of emerging composite materials with inherently outstanding interface properties for electrocatalytic applications. In this study, we fabricate a Ru-Co nano-oxide coupler that enables internal electron transfer between Ru and Co elements. The catalyst exhibits superior oxygen evolution reaction (OER) performance compared to commercial RuO<sub>2</sub>, with mere 260 mV overpotential at 10 mA cm<sup>−2</sup>. The exchange current density (i<sub>0</sub>) for RuO<sub>2/</sub>Co<sub>3</sub>O<sub>4</sub> is enhanced by three orders of magnitude compared to commercial RuO<sub>2</sub>. Electrochemical characterizations and computational analysis reveal that the coupling of Co<sub>3</sub>O<sub>4</sub> and RuO<sub>2</sub> enhances the surface's capability for water dissociation on the interface Ru sites, thereby initiating OER. The exceptional performance of RuO<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> enables water splitting via a single-cell AA battery configuration that utilizes a RuO<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> anode || Pt/C cathode setup. This accomplishment underscores the potential of RuO<sub>2</sub>/Co<sub>3</sub>O<sub>4</sub> for effective and sustainable electrochemical water splitting applications.</p></div>\",\"PeriodicalId\":243,\"journal\":{\"name\":\"Applied Catalysis A: General\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.7000,\"publicationDate\":\"2024-05-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Catalysis A: General\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0926860X24002394\",\"RegionNum\":2,\"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":"Applied Catalysis A: General","FirstCategoryId":"1","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0926860X24002394","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Ruthenium-cobalt nano-oxide coupler with enhanced water dissociation for oxidation
Heterogeneous oxide couplers represent a type of emerging composite materials with inherently outstanding interface properties for electrocatalytic applications. In this study, we fabricate a Ru-Co nano-oxide coupler that enables internal electron transfer between Ru and Co elements. The catalyst exhibits superior oxygen evolution reaction (OER) performance compared to commercial RuO2, with mere 260 mV overpotential at 10 mA cm−2. The exchange current density (i0) for RuO2/Co3O4 is enhanced by three orders of magnitude compared to commercial RuO2. Electrochemical characterizations and computational analysis reveal that the coupling of Co3O4 and RuO2 enhances the surface's capability for water dissociation on the interface Ru sites, thereby initiating OER. The exceptional performance of RuO2/Co3O4 enables water splitting via a single-cell AA battery configuration that utilizes a RuO2/Co3O4 anode || Pt/C cathode setup. This accomplishment underscores the potential of RuO2/Co3O4 for effective and sustainable electrochemical water splitting applications.
期刊介绍:
Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications.
Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.