{"title":"在CuO/Cu上原位生长zn掺杂NiCo-LDH纳米片作为同轴柔性不对称超级电容器的电极","authors":"Yiyan Mo, Xian Huang, Xiuyan Shi, Wangsheng Li, Kaiyou Zhang, Aimiao Qin, Shuoping Chen","doi":"10.1016/j.jallcom.2025.179131","DOIUrl":null,"url":null,"abstract":"Enhancing supercapacitor performance necessitates the development of novel electrode materials with optimized nanostructures. Such electrode materials can be prepared through strategies like composite formation and elemental doping. In this study, CuO nanowires were initially grown on a flexible copper wire substrate to augment its specific surface area and enhance its intrinsic electrochemical properties. Subsequently, CuO@NiCoZn-LDH composites were synthesized via hydrothermal methods, wherein Zn was successfully doped into NiCo-LDH by partially substituting Ni or Co within the LDH layers. Both undoped and Zn-doped electrode materials were fabricated to enable comparative morphological, structural, and electrochemical analyses. Zn doping significantly increased the nanostructural dimensions, specific surface area, and active site density of NiCo-LDH, thereby improving its electrochemical performance. Additionally, a coaxial flexible supercapacitor was assembled using activated carbon paper (ACP) as the negative electrode and CuO@NiCoZn-LDH prepared under optimal conditions as the positive electrode. This device exhibited an excellent energy density of 35.6 μWh cm⁻² at a power density of 1.6<!-- --> <!-- -->mW<!-- --> <!-- -->cm⁻², while retaining 75.67% of its initial specific capacitance after 8000 charge-discharge cycles. This work provides valuable insights into achieving superb flexible energy storage performance.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"2 1","pages":""},"PeriodicalIF":6.3000,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Zn-doped NiCo-LDH nanoflakes grown in-situ on CuO/Cu as an electrode for coaxial flexible asymmetric supercapacitor\",\"authors\":\"Yiyan Mo, Xian Huang, Xiuyan Shi, Wangsheng Li, Kaiyou Zhang, Aimiao Qin, Shuoping Chen\",\"doi\":\"10.1016/j.jallcom.2025.179131\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Enhancing supercapacitor performance necessitates the development of novel electrode materials with optimized nanostructures. Such electrode materials can be prepared through strategies like composite formation and elemental doping. In this study, CuO nanowires were initially grown on a flexible copper wire substrate to augment its specific surface area and enhance its intrinsic electrochemical properties. Subsequently, CuO@NiCoZn-LDH composites were synthesized via hydrothermal methods, wherein Zn was successfully doped into NiCo-LDH by partially substituting Ni or Co within the LDH layers. Both undoped and Zn-doped electrode materials were fabricated to enable comparative morphological, structural, and electrochemical analyses. Zn doping significantly increased the nanostructural dimensions, specific surface area, and active site density of NiCo-LDH, thereby improving its electrochemical performance. Additionally, a coaxial flexible supercapacitor was assembled using activated carbon paper (ACP) as the negative electrode and CuO@NiCoZn-LDH prepared under optimal conditions as the positive electrode. This device exhibited an excellent energy density of 35.6 μWh cm⁻² at a power density of 1.6<!-- --> <!-- -->mW<!-- --> <!-- -->cm⁻², while retaining 75.67% of its initial specific capacitance after 8000 charge-discharge cycles. This work provides valuable insights into achieving superb flexible energy storage performance.\",\"PeriodicalId\":344,\"journal\":{\"name\":\"Journal of Alloys and Compounds\",\"volume\":\"2 1\",\"pages\":\"\"},\"PeriodicalIF\":6.3000,\"publicationDate\":\"2025-02-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Alloys and Compounds\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1016/j.jallcom.2025.179131\",\"RegionNum\":2,\"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":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jallcom.2025.179131","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Zn-doped NiCo-LDH nanoflakes grown in-situ on CuO/Cu as an electrode for coaxial flexible asymmetric supercapacitor
Enhancing supercapacitor performance necessitates the development of novel electrode materials with optimized nanostructures. Such electrode materials can be prepared through strategies like composite formation and elemental doping. In this study, CuO nanowires were initially grown on a flexible copper wire substrate to augment its specific surface area and enhance its intrinsic electrochemical properties. Subsequently, CuO@NiCoZn-LDH composites were synthesized via hydrothermal methods, wherein Zn was successfully doped into NiCo-LDH by partially substituting Ni or Co within the LDH layers. Both undoped and Zn-doped electrode materials were fabricated to enable comparative morphological, structural, and electrochemical analyses. Zn doping significantly increased the nanostructural dimensions, specific surface area, and active site density of NiCo-LDH, thereby improving its electrochemical performance. Additionally, a coaxial flexible supercapacitor was assembled using activated carbon paper (ACP) as the negative electrode and CuO@NiCoZn-LDH prepared under optimal conditions as the positive electrode. This device exhibited an excellent energy density of 35.6 μWh cm⁻² at a power density of 1.6 mW cm⁻², while retaining 75.67% of its initial specific capacitance after 8000 charge-discharge cycles. This work provides valuable insights into achieving superb flexible energy storage performance.
期刊介绍:
The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.