ZnCo2O4@CoWO4纳米复合材料的制备工艺及电化学性能研究
Preparation and Electrochemical Properties of ZnCoO4@CoWO4 Nanocomposites
徐嵩林 1李佳 1周仲鸿 1崔士涛 1马小雪 1田月 1相珺 1赵荣达1
作者信息
- 1. 辽宁工业大学材料科学与工程学院,辽宁锦州 121001
- 折叠
摘要
采用水热合成法在泡沫镍基体上生长ZnCo2O4纳米针阵列,并在其表面沉积CoWO4纳米片,进而制备核壳ZnCo2O,@CoWO4复合电极材料.利用SEM、XRD和电化学工作站表征了电极材料的微观形貌、相结构和电化学性能.结果表明:ZnCo2O4@CoWO4电极材料的微观形貌呈棒状,CoWO4纳米片紧紧地包裹在ZnCo2O,纳米针的表面,同时其电化学性能在单体的基础上明显提高.ZnCo2O4@CoWO4复合电极材料具有高比容量,充放电循环性能增强,能有效地解决单体ZnCo2O4材料导电性差和体积膨胀带来的循环稳定性差的问题.
Abstract
ZnCo2O4 nanoneedle arrays were grown on nickel foam by hydrothermal synthesis method,and then CoWO4 nanosheets were deposited on the surface to prepare a core-shell ZnCo2O4@CoWO4 composite electrode material.The microstructure,phase structure,and electrochemical properties of the electrode ma-terial were characterized by SEM,XRD,and electrochemical workstation.The results show that the ZnCo2O4@CoWO4 electrode material exhibits a rod-like microstructure,with CoWO4 nanosheets tightly wrap-ping the surface of ZnCo2O4 nanoneedles.Meanwhile,the electrochemical properties of ZnCo2O4@CoWO4 electrode material are significantly improved on the basis of the monomer.Additionally,ZnCo2O4@CoWO4 composite electrode material has a high specific capacity and an enhanced charge-discharge cycle perfor-mance,effectively addressing the problems of poor conductivity and cycle stability caused by the volume expansion of momoner ZnCo2O4 material.
关键词
电极材料/钴酸锌/钨酸钴/纳米复合材料/水热合成法/电化学性能Key words
electrode material/ZnCo2O4/CoWO4/nanocomposite/hydrothermal synthesis method/electro-chemical property引用本文复制引用
基金项目
辽宁省自然科学基金博士科研启动基金(2022-BS-310)
辽宁省教育厅科学研究经费项目(LJKZ0612)
辽宁省教育厅科学研究经费项目(LJKMZ20220959)
国家级大学生创新创业训练计划(202110154015)
出版年
2024
NETL
NSTL
万方数据