{"title":"构建 Co3O4 纳米线@NiCo2O4 纳米片分层阵列作为高性能超级电容器的电极材料","authors":"Bo Xu, Lu Pan, Yaqi Wang, Menglong Liu","doi":"10.3390/nano14211703","DOIUrl":null,"url":null,"abstract":"<p><p>The Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array was constructed on Ni foam using hydrothermal and annealing approaches in turn, from which a NiCo<sub>2</sub>O<sub>4</sub> nanosheet could self-assemble on the Co<sub>3</sub>O<sub>4</sub> nanowire. The structure and morphology of the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array were characterized via XRD, EDS, SEM, and FESEM, respectively. The electrochemical performance of the composite array was measured via a cyclic voltammetry curve, galvanostatic current charge-discharge, charge-discharge cycle, and electrochemical impedance and then compared with the Co<sub>3</sub>O<sub>4</sub> nanowire. The results show that the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array could reach a high value of 2034 F g<sup>-1</sup> at a current density of 2.5 A g<sup>-1</sup>. After 5000 galvanostatic charge-discharge cycles, the specific capacitance of the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array could still maintain 94.7% of the original value. Therefore, the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array would be a desirable electrode material for a high-performance supercapacitor.</p>","PeriodicalId":18966,"journal":{"name":"Nanomaterials","volume":"14 21","pages":""},"PeriodicalIF":4.4000,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547568/pdf/","citationCount":"0","resultStr":"{\"title\":\"Constructing Co<sub>3</sub>O<sub>4</sub> Nanowire@NiCo<sub>2</sub>O<sub>4</sub> Nanosheet Hierarchical Array as Electrode Material for High-Performance Supercapacitor.\",\"authors\":\"Bo Xu, Lu Pan, Yaqi Wang, Menglong Liu\",\"doi\":\"10.3390/nano14211703\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array was constructed on Ni foam using hydrothermal and annealing approaches in turn, from which a NiCo<sub>2</sub>O<sub>4</sub> nanosheet could self-assemble on the Co<sub>3</sub>O<sub>4</sub> nanowire. The structure and morphology of the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array were characterized via XRD, EDS, SEM, and FESEM, respectively. The electrochemical performance of the composite array was measured via a cyclic voltammetry curve, galvanostatic current charge-discharge, charge-discharge cycle, and electrochemical impedance and then compared with the Co<sub>3</sub>O<sub>4</sub> nanowire. The results show that the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array could reach a high value of 2034 F g<sup>-1</sup> at a current density of 2.5 A g<sup>-1</sup>. After 5000 galvanostatic charge-discharge cycles, the specific capacitance of the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array could still maintain 94.7% of the original value. Therefore, the Co<sub>3</sub>O<sub>4</sub> nanowire@NiCo<sub>2</sub>O<sub>4</sub> nanosheet hierarchical array would be a desirable electrode material for a high-performance supercapacitor.</p>\",\"PeriodicalId\":18966,\"journal\":{\"name\":\"Nanomaterials\",\"volume\":\"14 21\",\"pages\":\"\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2024-10-24\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11547568/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nanomaterials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.3390/nano14211703\",\"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":"Nanomaterials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.3390/nano14211703","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}
Constructing Co3O4 Nanowire@NiCo2O4 Nanosheet Hierarchical Array as Electrode Material for High-Performance Supercapacitor.
The Co3O4 nanowire@NiCo2O4 nanosheet hierarchical array was constructed on Ni foam using hydrothermal and annealing approaches in turn, from which a NiCo2O4 nanosheet could self-assemble on the Co3O4 nanowire. The structure and morphology of the Co3O4 nanowire@NiCo2O4 nanosheet hierarchical array were characterized via XRD, EDS, SEM, and FESEM, respectively. The electrochemical performance of the composite array was measured via a cyclic voltammetry curve, galvanostatic current charge-discharge, charge-discharge cycle, and electrochemical impedance and then compared with the Co3O4 nanowire. The results show that the Co3O4 nanowire@NiCo2O4 nanosheet hierarchical array could reach a high value of 2034 F g-1 at a current density of 2.5 A g-1. After 5000 galvanostatic charge-discharge cycles, the specific capacitance of the Co3O4 nanowire@NiCo2O4 nanosheet hierarchical array could still maintain 94.7% of the original value. Therefore, the Co3O4 nanowire@NiCo2O4 nanosheet hierarchical array would be a desirable electrode material for a high-performance supercapacitor.
期刊介绍：
Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
