摘要
采用两步法成功构筑SnO2/还原氧化石墨烯/聚苯胺(SnO2/RGO/PANI)三元复合材料。首先制备出均匀分散的SnO2/还原氧化石墨烯(SnO2/RGO)二元复合物,然后再以二元复合物为载体,通过苯胺(An)单体的化学氧化聚合获得终端产物。利用傅里叶红外光谱(FT-IR)、X射线衍射(XRD)和场发射扫描电镜(FESEM)对复合材料的结构和形貌等物理性质进行表征,利用循环伏安测试、恒电流充放电测试和交流阻抗测试对复合材料的电化学电容性能进行研究,并讨论了PANI的含量对复合材料的结构和性能的影响。结果表明,所合成的三元复合材料的比电容随PANI含量的增加而增大,最大达到424.8F/g,其电容性能的增强源于SnO2、RGO与PANI三者的相互协同作用。
SnO2/RCA）/PANI ternary composites were prepared by means of a two-step method including the synthesis of well-dispersed SnO2/R（K） and the in situ chemical oxidative polymerization of aniline. Morphologies and microstructures of the resulting product were characterized by Fourier transform infrared （FT-IR） spectrometer, X- ray diffraction （XRD） and field emission scanning electron microscopy （FESEM）. Electrochemical behaviors of the ternary composites as a single electrode of supercapacitors were investigated by cyclic voltammogram （CV）, galvanos- tatic charge/discharge tests and electrochemical impedance techniques. The results show that the ternary composites exhibit a maximum specific capacitance of 424. 8F/g, which is greater than the specific capacitance of SnOz/RCK） binary com posites. Furthermore, specific capacitance of the sample increases with increasing amount of PANI in the ternary com- posites. The positive synergy effect between the three components might enhance the capacitive performance.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2012年第22期54-58,共5页
Materials Reports
基金
国家自然科学基金(20963009
21163017)
甘肃省自然科学基金(0803RJA005)
