{"title":"熔盐介导模板法合成的多孔掺氮碳纳米片复合 Fe3C 作为锌-空气电池的高效 ORR 催化剂","authors":"Qing Long, Qianqi Wu, Zhiming Wen, Wei Wang, Chen Li, Huichuan Tang, Haitao Wang, Junlin Huang, Liang Chen, Gangyong Li, Wenyuan Xu","doi":"10.1007/s42823-024-00802-5","DOIUrl":null,"url":null,"abstract":"<p>Considering the intrinsic activity of non-precious metal oxygen reduction reaction (ORR) catalysts is typically lower than that of precious metal catalysts, it is crucial to focus on the rational design of their micro-morphology and active site. This paper employed a simple molten salt-mediated template method to fabricate a Fe<sub>3</sub>C composite N-doped C catalyst with a layered porous framework (Fe<sub>3</sub>C@NC). Tannic acid was utilized to form a strong coordination with iron to limit the grain size of Fe<sub>3</sub>C nanocrystals generated by high-temperature pyrolysis. Moreover, urea achieved nitrogen doping in tannic acid-derived porous carbon, while the graphite phase nitrogen-doped carbon (g-C<sub>3</sub>N<sub>4</sub>) formed by its pyrolysis, together with the molten salt-mediated environment, jointly controlled the two-dimensional sheet-like structure of the material. The optimized Fe<sub>3</sub>C@NC-800 demonstrated efficient ORR performance, with an ORR half-wave potential of 0.883 V. Its application as a cathode catalyst in a liquid zinc-air battery (ZABs) exhibits a maximum power density of 211.5 mW cm<sup>−2</sup>, surpassing that of a Pt/C-based ZAB and indicating the potential practical utility of this material.</p>","PeriodicalId":506,"journal":{"name":"Carbon Letters","volume":"67 1","pages":""},"PeriodicalIF":5.5000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Porous nitrogen-doped carbon nanosheets composite Fe3C synthesized by molten salt-mediated template method as efficient ORR catalyst for zinc-air batteries\",\"authors\":\"Qing Long, Qianqi Wu, Zhiming Wen, Wei Wang, Chen Li, Huichuan Tang, Haitao Wang, Junlin Huang, Liang Chen, Gangyong Li, Wenyuan Xu\",\"doi\":\"10.1007/s42823-024-00802-5\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Considering the intrinsic activity of non-precious metal oxygen reduction reaction (ORR) catalysts is typically lower than that of precious metal catalysts, it is crucial to focus on the rational design of their micro-morphology and active site. This paper employed a simple molten salt-mediated template method to fabricate a Fe<sub>3</sub>C composite N-doped C catalyst with a layered porous framework (Fe<sub>3</sub>C@NC). Tannic acid was utilized to form a strong coordination with iron to limit the grain size of Fe<sub>3</sub>C nanocrystals generated by high-temperature pyrolysis. Moreover, urea achieved nitrogen doping in tannic acid-derived porous carbon, while the graphite phase nitrogen-doped carbon (g-C<sub>3</sub>N<sub>4</sub>) formed by its pyrolysis, together with the molten salt-mediated environment, jointly controlled the two-dimensional sheet-like structure of the material. The optimized Fe<sub>3</sub>C@NC-800 demonstrated efficient ORR performance, with an ORR half-wave potential of 0.883 V. Its application as a cathode catalyst in a liquid zinc-air battery (ZABs) exhibits a maximum power density of 211.5 mW cm<sup>−2</sup>, surpassing that of a Pt/C-based ZAB and indicating the potential practical utility of this material.</p>\",\"PeriodicalId\":506,\"journal\":{\"name\":\"Carbon Letters\",\"volume\":\"67 1\",\"pages\":\"\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2024-09-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Carbon Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1007/s42823-024-00802-5\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1007/s42823-024-00802-5","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Porous nitrogen-doped carbon nanosheets composite Fe3C synthesized by molten salt-mediated template method as efficient ORR catalyst for zinc-air batteries
Considering the intrinsic activity of non-precious metal oxygen reduction reaction (ORR) catalysts is typically lower than that of precious metal catalysts, it is crucial to focus on the rational design of their micro-morphology and active site. This paper employed a simple molten salt-mediated template method to fabricate a Fe3C composite N-doped C catalyst with a layered porous framework (Fe3C@NC). Tannic acid was utilized to form a strong coordination with iron to limit the grain size of Fe3C nanocrystals generated by high-temperature pyrolysis. Moreover, urea achieved nitrogen doping in tannic acid-derived porous carbon, while the graphite phase nitrogen-doped carbon (g-C3N4) formed by its pyrolysis, together with the molten salt-mediated environment, jointly controlled the two-dimensional sheet-like structure of the material. The optimized Fe3C@NC-800 demonstrated efficient ORR performance, with an ORR half-wave potential of 0.883 V. Its application as a cathode catalyst in a liquid zinc-air battery (ZABs) exhibits a maximum power density of 211.5 mW cm−2, surpassing that of a Pt/C-based ZAB and indicating the potential practical utility of this material.
期刊介绍：
Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
