FeCo2S4/NF自支撑电极的制备及其电化学性能
Preparation of self-supported FeCo2S4/NF electrode and its electrochemical properties
钱惺悦 1尹轶萱 1何光裕 1陈海群1
作者信息
- 1. 常州大学石油化工学院,江苏常州 213164
- 折叠
摘要
以泡沫镍为自支撑基底,采用两步水热法在泡沫镍(NF)上合成FeCo2S4自支撑电极材料(Fe-Co2S4/NF).通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)和X射线光电子能谱(XPS)等对制备的电极材料进行表征分析,探究FeCo2S4/NF电极材料微观结构和电化学性能之间的关联,并在三电极体系中测试电极材料的电化学性能,将其与活性炭组装成非对称超级电容器,测试其在二电极体系中的电化学性能.结果表明,以泡沫镍为基底的自支撑FeCo2S4纳米片彼此相互连接,形成具有大量空隙的三维纳米结构,促进了电极材料的高效电子传递和长期稳定,从而使FeCo2S4/NF自支撑电极材料具有优良的储能性能.
Abstract
The self-supported FeCo2S4 electrode(FeCo2S4/NF)was synthesized by a two-step hydro-thermal method using nickel foam(NF)as the substrate.The prepared electrodes were characterized and analyzed by SEM,XRD and XPS to explore the relationship between the microstructure and elec-trochemical properties of FeCo2S4/NF.The electrochemical performance of the electrode materials was tested in a three-electrode system.Furthermore,the asymmetric supercapacitor was assembled u-sing activated carbon as cathode to test the electrochemical performance in a two-electrode system.The results showed that the self-supported FeCo2S4 nanosheets were interconnected with NF to form a three-dimensional nanostructure with numerous pores.Such unique structure significantly promoted the efficient electron transfer and long-term stability of the electrode material,thus making the self-supported FeCo2S4/NF electrode with excellent energy storage performance.
关键词
过渡金属硫化物/自支撑/FeCo2S4/能量密度/电化学Key words
transition metal sulfide/self-supported/FeCo2S4/energy density/electrochemistry引用本文复制引用
基金项目
国家自然科学基金(21978026)
常州市领军型创新人才引进培育项目(C类)(CQ20210114)
常州市引进外国人才专项(CQ20214032)
出版年
2024
国家科技期刊平台
NSTL
万方数据