{"title":"先进超级电容器电极用过渡金属（M = Co, Ni, Zn）掺杂碳/氮化钒制备","authors":"Yuan Zhang, Yongtao Tan* and Fengwei Tuo, ","doi":"10.1021/acsaem.5c01502","DOIUrl":null,"url":null,"abstract":"<p >Vanadium nitride has emerged as a research focus for supercapacitor electrodes; however, its dissolution issues, poor cycling stability, and low specific capacitance still require improvement. We aim to prepare a transition metal (M = Co, Ni, Zn)-doped carbon/vanadium nitride composite via the transition metal (M = Co, Ni, Zn)-doped technology combined with simultaneous preparation of carbon material. The effects of different metal types on electrochemical performance were systematically investigated. It was found that Co doping not only promotes the degree of graphitization but also improves electron density, thereby improving the electrochemical performance of C/Co/VN composites. The optimized C/Co/VN-700–0.5 heterojunction material exhibits a specific capacitance of 306.3 F g<sup>–1</sup> at a current density of 0.5 A g<sup>–1</sup>, which outperforms the optimized C/Ni/VN and C/Zn/VN heterojunction materials. Furthermore, the assembled Ni(OH)<sub>2</sub>//C/Co/VN-700–0.5 device achieves a high energy density of 27.52 Wh kg<sup>–1</sup> with excellent cycle stability.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"8 15","pages":"11353–11361"},"PeriodicalIF":5.5000,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Transition Metal (M = Co, Ni, Zn)-Doped Carbon/Vanadium Nitride Fabricated for Advanced Supercapacitor Electrodes\",\"authors\":\"Yuan Zhang, Yongtao Tan* and Fengwei Tuo, \",\"doi\":\"10.1021/acsaem.5c01502\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Vanadium nitride has emerged as a research focus for supercapacitor electrodes; however, its dissolution issues, poor cycling stability, and low specific capacitance still require improvement. We aim to prepare a transition metal (M = Co, Ni, Zn)-doped carbon/vanadium nitride composite via the transition metal (M = Co, Ni, Zn)-doped technology combined with simultaneous preparation of carbon material. The effects of different metal types on electrochemical performance were systematically investigated. It was found that Co doping not only promotes the degree of graphitization but also improves electron density, thereby improving the electrochemical performance of C/Co/VN composites. The optimized C/Co/VN-700–0.5 heterojunction material exhibits a specific capacitance of 306.3 F g<sup>–1</sup> at a current density of 0.5 A g<sup>–1</sup>, which outperforms the optimized C/Ni/VN and C/Zn/VN heterojunction materials. Furthermore, the assembled Ni(OH)<sub>2</sub>//C/Co/VN-700–0.5 device achieves a high energy density of 27.52 Wh kg<sup>–1</sup> with excellent cycle stability.</p>\",\"PeriodicalId\":4,\"journal\":{\"name\":\"ACS Applied Energy Materials\",\"volume\":\"8 15\",\"pages\":\"11353–11361\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Energy Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsaem.5c01502\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.5c01502","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
摘要
氮化钒已成为超级电容器电极的研究热点；但其溶解性、循环稳定性差、比电容低等问题仍需改进。我们的目标是通过过渡金属（M = Co, Ni, Zn）掺杂技术与碳材料同步制备相结合，制备过渡金属（M = Co, Ni, Zn）掺杂碳/氮化钒复合材料。系统地研究了不同金属类型对电化学性能的影响。发现Co的掺杂不仅促进了石墨化程度，而且提高了电子密度，从而改善了C/Co/VN复合材料的电化学性能。优化后的C/Co/VN-700 - 0.5异质结材料在0.5 a g-1电流密度下的比电容为306.3 F - 1，优于优化后的C/Ni/VN和C/Zn/VN异质结材料。此外，组装的Ni(OH)2//C/Co/ VN-700-0.5器件具有27.52 Wh kg-1的高能量密度和良好的循环稳定性。
Transition Metal (M = Co, Ni, Zn)-Doped Carbon/Vanadium Nitride Fabricated for Advanced Supercapacitor Electrodes
Vanadium nitride has emerged as a research focus for supercapacitor electrodes; however, its dissolution issues, poor cycling stability, and low specific capacitance still require improvement. We aim to prepare a transition metal (M = Co, Ni, Zn)-doped carbon/vanadium nitride composite via the transition metal (M = Co, Ni, Zn)-doped technology combined with simultaneous preparation of carbon material. The effects of different metal types on electrochemical performance were systematically investigated. It was found that Co doping not only promotes the degree of graphitization but also improves electron density, thereby improving the electrochemical performance of C/Co/VN composites. The optimized C/Co/VN-700–0.5 heterojunction material exhibits a specific capacitance of 306.3 F g–1 at a current density of 0.5 A g–1, which outperforms the optimized C/Ni/VN and C/Zn/VN heterojunction materials. Furthermore, the assembled Ni(OH)2//C/Co/VN-700–0.5 device achieves a high energy density of 27.52 Wh kg–1 with excellent cycle stability.
期刊介绍：
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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