钴离子和氢离子共掺杂聚苯胺的形貌可控制备与电化学性能

发布时间：2019-06-18 13:58

【摘要】：利用氧化聚合法制备钴离子(Co~(2+))和氢离子(H~+)共掺杂聚苯胺(PCoH),系统研究了Co~(2+)/苯胺(An)摩尔比、质子酸的种类和溶剂中水/乙醇体积比对PCoH的形貌和电化学性能的影响。结果表明,随着Co~(2+)/An摩尔比的提高,PCoH由无定形团聚态转变为纳米纤维结构。质子酸为盐酸(HCl)时,PCoH具有疏松规整的短棒结构,内部孔径分布规整,电化学性能最佳。溶剂中加入乙醇有助于PCoH聚合过程中生长出形貌均匀的纳米纤毛结构,并表现出优异的电化学性能,但过量的乙醇会增大PCoH的阻抗。当Co~(2+)/An摩尔比为2∶1,HCl为质子酸,溶剂中水/乙醇体积比为1∶1时,PCoH具有最大的比电容为374 F/g,经1000次循环后,仍保留85.2%的初始比电容,表现出良好的循环稳定性。
[Abstract]:Cobalt ion (Co~ (2) and hydrogen ion (H ~) co-doping Polyaniline (PCoH), system were prepared by oxidative polymerization. The effects of Co~ (2) / amine (An) molar ratio, the type of protonic acid and the volume ratio of water / ethanol in solvent on the morphology and electrochemical properties of PCoH were studied. The results show that with the increase of Co~ (2) / An molar ratio, PCoH changes from amorphous agglomeration to nanofiber structure. When proton acid is hydrochloric acid (HCl), PCoH has loose and regular short rod structure, regular internal pore size distribution and the best electrochemical performance. The addition of ethanol to the solvent is helpful to the growth of uniform nano-ciliated structure in the process of PCoH polymerization, and shows excellent electrochemical performance, but excessive ethanol will increase the impedance of PCoH. When the molar ratio of Co~ (2) / An is 2 脳 1, HCl is proton acid and the volume ratio of water to ethanol in solvent is 1: 1, the maximum specific capacitance of PCoH is 374F 路g. After 1000 cycles, the initial specific capacitance of HCL (2) / HCL is still 85.2%, which shows good cycle stability.
【作者单位】：福州大学材料科学与工程学院;福建省高分子材料重点实验室(福建师范大学);
【基金】：国家自然科学基金资助项目(61205182) 国家大学生创新创业训练计划项目(201410386032) 福建省高分子材料重点实验室开放研究基金(FJKL-POLY 2015010)
【分类号】：O633.21

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