摘要
采用电镀和水热反应两步法制备了一种高柔性Ni Te/Ni@CC超级电容器正极材料。利用X射线衍射、扫描电镜、能谱仪和电化学工作站对Ni Te/Ni@CC电极进行了表征与分析。结果表明,该电极具有CC-Ni-Ni Te的层次结构;在电流密度为5 m A/cm^(2)时,电极的面积比电容达到2.85 F/cm^(2);由该电极组装的Ni Te/Ni@CC//AC/CC全固态柔性超级电容器在5.57 m W/cm^(2)的面功率密度下可提供高达0.50 m W·h/cm^(2)的面能量密度,并且在0~90°的2 000次弯曲循环后,具有77.20%的初始电容保持率。
A highly flexible Ni Te/Ni@ CC electrode material for supercapacitor is fabricated via a two-step approach including electroplating and in situ growth. X-ray diffraction( XRD),scanning electron microscopy( SEM),energy dispersive spectroscopy( EDS) and electrochemical workstation are employed for the characterization and analysis of Ni Te/Ni@ CC electrode material.It is shown that the electrode material has a CC-Ni-NiTe hierarchical structure. As the current density is 5 m A·cm^(-2),the areal specific capacitance of the electrode reaches 2. 85 F·cm^(-2).NiTe/Ni@ CC//AC/CC all-solid-state flexible supercapacitor assembled by this electrode can provide an area energy density as high as0. 50 m Wh·cm^(-2) at an area power density of 5. 57 m W·cm^(-2),and has a capacitance retention rate of 77. 20% after2,000 bending cycles from 0° to 90°.
作者
钱豪
刘湉湉
聂仲武
陈曙光
QIAN Hao;LIU Tian-tian;NIE Zhong-wu;CHEN Shu-guang(College of Materials Science and Engineering,Changsha University of Science&Technology,Changsha 410114,China)
出处
《现代化工》
CAS
CSCD
北大核心
2021年第7期108-112,117,共6页
Modern Chemical Industry
基金
国家自然科学基金青年项目(51701022)。
关键词
电镀
水热反应
超级电容器
柔性
层次结构
electroplating
hydrothermal reaction
supercapacitor
flexible
hierarchical structure
