{"title":"超级电容器电极电沉积钴铜混合氧化物及其Co/Cu比对电化学性能的影响","authors":"E. Noormohammadi, S. Sanjabi, F. Soavi, F. Poli","doi":"10.1007/s40243-023-00229-4","DOIUrl":null,"url":null,"abstract":"<div><p>In this study, different Cobalt–Copper mixed oxides compositions for supercapacitor electrodes have been prepared, by means of electrodeposition and thermal annealing. The chemical–physical and electrochemical characterization of electrodes, as well as the effect of different Co/Cu in the ratios on the crystal lattice, electrode morphologies, and electrochemical performance of the electrodes, were investigated using X-ray diffraction (XRD), scanning electron microscopic (SEM) and cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge/discharge (GCD) tests. The results indicated that the electrode prepared from 0.06 M CoSO<sub>4</sub>·7H<sub>2</sub>O + 0.04 M CuSO<sub>4</sub>·5H<sub>2</sub>O solution (CC4) had a better electrochemical performance. The initial capacity of the CC4 electrode was 28.3 mAh/g at a scan rate of 5 mV/s with a coulombic efficiency of 94%. CC4 electrode featured capacity retention of 79.2% at a constant current density of 1 A/g after 5000 cycles.</p></div>","PeriodicalId":692,"journal":{"name":"Materials for Renewable and Sustainable Energy","volume":"12 1","pages":"53 - 61"},"PeriodicalIF":3.6000,"publicationDate":"2023-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40243-023-00229-4.pdf","citationCount":"1","resultStr":"{\"title\":\"Electrodeposited Cobalt–Copper mixed oxides for supercapacitor electrodes and investigation of the Co/Cu ratio on the electrochemical performance\",\"authors\":\"E. Noormohammadi, S. Sanjabi, F. Soavi, F. Poli\",\"doi\":\"10.1007/s40243-023-00229-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this study, different Cobalt–Copper mixed oxides compositions for supercapacitor electrodes have been prepared, by means of electrodeposition and thermal annealing. The chemical–physical and electrochemical characterization of electrodes, as well as the effect of different Co/Cu in the ratios on the crystal lattice, electrode morphologies, and electrochemical performance of the electrodes, were investigated using X-ray diffraction (XRD), scanning electron microscopic (SEM) and cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge/discharge (GCD) tests. The results indicated that the electrode prepared from 0.06 M CoSO<sub>4</sub>·7H<sub>2</sub>O + 0.04 M CuSO<sub>4</sub>·5H<sub>2</sub>O solution (CC4) had a better electrochemical performance. The initial capacity of the CC4 electrode was 28.3 mAh/g at a scan rate of 5 mV/s with a coulombic efficiency of 94%. CC4 electrode featured capacity retention of 79.2% at a constant current density of 1 A/g after 5000 cycles.</p></div>\",\"PeriodicalId\":692,\"journal\":{\"name\":\"Materials for Renewable and Sustainable Energy\",\"volume\":\"12 1\",\"pages\":\"53 - 61\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2023-02-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s40243-023-00229-4.pdf\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials for Renewable and Sustainable Energy\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40243-023-00229-4\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials for Renewable and Sustainable Energy","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1007/s40243-023-00229-4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 1
摘要
本研究采用电沉积和热退火的方法制备了不同的钴铜混合氧化物材料。采用x射线衍射(XRD)、扫描电镜(SEM)、循环伏安法(CV)、电化学阻抗谱(EIS)和恒流充放电(GCD)等测试方法，研究了电极的化学物理和电化学表征，以及不同Co/Cu配比对电极晶格、电极形貌和电化学性能的影响。结果表明，由0.06 M CoSO4·7H2O + 0.04 M CuSO4·5H2O溶液(CC4)制备的电极具有较好的电化学性能。扫描速率为5 mV/s时，CC4电极的初始容量为28.3 mAh/g，库仑效率为94%。CC4电极在恒电流密度为1 a /g时，循环5000次后容量保持率为79.2%。
Electrodeposited Cobalt–Copper mixed oxides for supercapacitor electrodes and investigation of the Co/Cu ratio on the electrochemical performance
In this study, different Cobalt–Copper mixed oxides compositions for supercapacitor electrodes have been prepared, by means of electrodeposition and thermal annealing. The chemical–physical and electrochemical characterization of electrodes, as well as the effect of different Co/Cu in the ratios on the crystal lattice, electrode morphologies, and electrochemical performance of the electrodes, were investigated using X-ray diffraction (XRD), scanning electron microscopic (SEM) and cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and galvanostatic charge/discharge (GCD) tests. The results indicated that the electrode prepared from 0.06 M CoSO4·7H2O + 0.04 M CuSO4·5H2O solution (CC4) had a better electrochemical performance. The initial capacity of the CC4 electrode was 28.3 mAh/g at a scan rate of 5 mV/s with a coulombic efficiency of 94%. CC4 electrode featured capacity retention of 79.2% at a constant current density of 1 A/g after 5000 cycles.
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