PAN@石墨烯核-壳纳米纤维的制备及其超级电容特性研究  

Preparation of PAN@Graphene Core-Shell Nanofiber and Its Supercapacitive Property

作　　者：孙海斌[1] 梁双双 张慧茹 付灿 王晴晴 李高丽 SUN Haibin;LIANG Shuangshuang;ZHANG Huiru;FU Can;WANG Qingqing;LI Gaoli(College of Physics and Electronic Engineering,Xinyang Normal University,Xinyang 464000,China;School of Electronic Science&Applied Physics,Hefei University of Technology,Hefei 230000,China)

机构地区：[1]信阳师范学院物理电子工程学院,河南信阳464000 [2]合肥工业大学电子科学与应用物理学院,安徽合肥230000

出　　处：《信阳师范学院学报（自然科学版）》2022年第1期108-112,共5页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(11874317);河南省高等学校青年骨干教师培养计划项目(2018GGJS097);信阳师范学院大学生科研基金项目(2020-DXS-130);信阳师范学院“南湖学者奖励计划”青年项目。

摘　　要：以静电纺丝法制备的聚丙烯腈(PAN)基碳纳米纤维为原料,铜箔为催化剂,采用化学气相沉积法合成了PAN@石墨烯核-壳纳米纤维。利用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、拉曼光谱和电化学测试对样品的形貌、结构、组成以及电化学性质进行观察和分析。结果表明:化学气相沉积法能有效地制备PAN@石墨烯核-壳纳米纤维,通过薄膜提拉法可以得到一维宏观结构的石墨烯纤维;以聚乙烯醇/磷酸(PVA/H_(3)PO_(4))作为凝胶电解质组装成纤维状超级电容器,在扫描速率为10 mV/s时,具有较高的比电容(158 mF/cm^(3));经过多次弯曲后,比电容相对稳定,显示出良好的柔韧性。PAN@graphene core-shell nanofibers were synthesized by the chemical vapor deposition method with PAN-based carbon nanofibers as the raw material and Cu foils as the catalyst.The morphology,structure,and components of the as-prepared PAN@graphene nanofibers were characterized by scanning electron microscopy,transmission electron microscopy and Raman spectroscopy analysis.The results showed that the core-shell structure was constructed with graphene films coating the PAN-based carbon nanofibers,and the one-dimensional graphene fiber was synthesized by the film-scrolling technique.In addition,the electrochemical performance of the graphene fiber was tested.The calculated specific capacitance value of graphene fiber was 158 mF/cm^(3) at the scanning rate 10 mV/s,and the excellent flexibility after multiple bending in a gel electrolyte of PVA/H_(3)PO_(4).

关 键 词：石墨烯纤维 静电纺丝 化学气相沉积 超级电容器 

分 类 号：O469[理学—凝聚态物理]