Jia-bing LUO , Xing-zhao WANG , Jun ZHANG , Yan ZHOU
{"title":"铁掺杂Co3O4锚定在空心碳纳米笼上的高效电催化析氧","authors":"Jia-bing LUO , Xing-zhao WANG , Jun ZHANG , Yan ZHOU","doi":"10.1016/S1872-5813(22)60080-X","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, a Fe-doped Co<sub>3</sub>O<sub>4</sub> OER electrocatalyst supported by an N-doped hollow nanocage carbon framework (Fe-Co<sub>3</sub>O<sub>4</sub>/NC) was successfully prepared by anion exchange and annealing in an air atmosphere strategy. XRD and HRTEM characterizations confirm that Fe the incorporation of Fe into the lattice of Co<sub>3</sub>O<sub>4</sub>. XPS characterization clarifies that the valence state of Co increases after the introduction of Fe, which originates from the electrons transfer from Co<sup>2+</sup>/Co<sup>3+</sup> to Fe<sup>3+</sup> and is induced by the valence electron configuration of cations. It simulates Co sites <em>in-situ</em> derived into CoOOH active species during the OER process, which is confirmed by the HRTEM and XPS characterization after the OER stability test. Electrochemical performance tests show that the Fe-Co<sub>3</sub>O<sub>4</sub>/NC electrocatalyst only exhibits 275 mV overpotential to achieve a current density of 10 mA/cm<sup>2</sup> and stably maintains for 20 h at 100 mA/cm<sup>2</sup>. Together with 20% Pt/C electrocatalyst, the composed two-electrode system only needs 2.041 V applied potential to achieve 100 mA/cm<sup>2</sup> for total water splitting in a self-made membrane electrode device, which has industrial application prospects.</p></div>","PeriodicalId":15956,"journal":{"name":"燃料化学学报","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Fe-doped Co3O4 anchored on hollow carbon nanocages for efficient electrocatalytic oxygen evolution\",\"authors\":\"Jia-bing LUO , Xing-zhao WANG , Jun ZHANG , Yan ZHOU\",\"doi\":\"10.1016/S1872-5813(22)60080-X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, a Fe-doped Co<sub>3</sub>O<sub>4</sub> OER electrocatalyst supported by an N-doped hollow nanocage carbon framework (Fe-Co<sub>3</sub>O<sub>4</sub>/NC) was successfully prepared by anion exchange and annealing in an air atmosphere strategy. XRD and HRTEM characterizations confirm that Fe the incorporation of Fe into the lattice of Co<sub>3</sub>O<sub>4</sub>. XPS characterization clarifies that the valence state of Co increases after the introduction of Fe, which originates from the electrons transfer from Co<sup>2+</sup>/Co<sup>3+</sup> to Fe<sup>3+</sup> and is induced by the valence electron configuration of cations. It simulates Co sites <em>in-situ</em> derived into CoOOH active species during the OER process, which is confirmed by the HRTEM and XPS characterization after the OER stability test. Electrochemical performance tests show that the Fe-Co<sub>3</sub>O<sub>4</sub>/NC electrocatalyst only exhibits 275 mV overpotential to achieve a current density of 10 mA/cm<sup>2</sup> and stably maintains for 20 h at 100 mA/cm<sup>2</sup>. Together with 20% Pt/C electrocatalyst, the composed two-electrode system only needs 2.041 V applied potential to achieve 100 mA/cm<sup>2</sup> for total water splitting in a self-made membrane electrode device, which has industrial application prospects.</p></div>\",\"PeriodicalId\":15956,\"journal\":{\"name\":\"燃料化学学报\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"燃料化学学报\",\"FirstCategoryId\":\"1087\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S187258132260080X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"Energy\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"燃料化学学报","FirstCategoryId":"1087","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S187258132260080X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"Energy","Score":null,"Total":0}
Fe-doped Co3O4 anchored on hollow carbon nanocages for efficient electrocatalytic oxygen evolution
In this work, a Fe-doped Co3O4 OER electrocatalyst supported by an N-doped hollow nanocage carbon framework (Fe-Co3O4/NC) was successfully prepared by anion exchange and annealing in an air atmosphere strategy. XRD and HRTEM characterizations confirm that Fe the incorporation of Fe into the lattice of Co3O4. XPS characterization clarifies that the valence state of Co increases after the introduction of Fe, which originates from the electrons transfer from Co2+/Co3+ to Fe3+ and is induced by the valence electron configuration of cations. It simulates Co sites in-situ derived into CoOOH active species during the OER process, which is confirmed by the HRTEM and XPS characterization after the OER stability test. Electrochemical performance tests show that the Fe-Co3O4/NC electrocatalyst only exhibits 275 mV overpotential to achieve a current density of 10 mA/cm2 and stably maintains for 20 h at 100 mA/cm2. Together with 20% Pt/C electrocatalyst, the composed two-electrode system only needs 2.041 V applied potential to achieve 100 mA/cm2 for total water splitting in a self-made membrane electrode device, which has industrial application prospects.
期刊介绍:
Journal of Fuel Chemistry and Technology (Ranliao Huaxue Xuebao) is a Chinese Academy of Sciences(CAS) journal started in 1956, sponsored by the Chinese Chemical Society and the Institute of Coal Chemistry, Chinese Academy of Sciences(CAS). The journal is published bimonthly by Science Press in China and widely distributed in about 20 countries. Journal of Fuel Chemistry and Technology publishes reports of both basic and applied research in the chemistry and chemical engineering of many energy sources, including that involved in the nature, processing and utilization of coal, petroleum, oil shale, natural gas, biomass and synfuels, as well as related subjects of increasing interest such as C1 chemistry, pollutions control and new catalytic materials. Types of publications include original research articles, short communications, research notes and reviews. Both domestic and international contributors are welcome. Manuscripts written in Chinese or English will be accepted. Additional English titles, abstracts and key words should be included in Chinese manuscripts. All manuscripts are subject to critical review by the editorial committee, which is composed of about 10 foreign and 50 Chinese experts in fuel science. Journal of Fuel Chemistry and Technology has been a source of primary research work in fuel chemistry as a Chinese core scientific periodical.