聚苯胺/碳复合材料的导电性

采用原位聚合法制得聚苯胺/碳复合材料,通过扫描电子显微镜(SEM)、X射线衍射仪(XRD)、傅立叶红外光谱仪(FT-IR)、四探针测试仪和电化学工作站对试样进行表征测试。结果表明,掺杂不同碳材料对聚苯胺(PANI)复合材料的导电性影响较大、微观形貌变化明显,其中掺杂石墨烯制得的复合材料电导率是纯PANI电导率的2.5倍,掺杂r-GO/Fe_3O_4制得的复合材料的电导率最高且阻抗最小,电导率达6.49 s/cm。掺杂后制得的PANI复合材料中,PANI的衍射峰及特征吸收峰依然存在,碳材料的掺杂改性未破坏PANI的性质,且可增强复合材料的导电性。

Electrical conductivity of PANI/carbon composite materials

PANI/carbon composite material was prepared by Hummers method. By means of scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transform infrared spectrometry (FT-IR), 4-point probes resistivity measurement system and electrochemical workstation, PANI/carbon composite material was characterized and tested. The results show that the electrical conductivity and the morphologies of the composite material with different carbon material doped are of great difference. The electrical conductivity of the material doped graphene is 2.5 times higher than that of PANI. Besides, the electrical conductivity of the composite material with r-GO/Fe3O4 is 6.49 s/cm, and the impedance is minimal. The diffraction peak and the characteristic absorption peak of PANI still exist in the composite materials doped with carbon. Therefore, the electrical conductivity of PANI composite material is improved instead of destroying the properties of PANI.