【作者】 韩少波； 陈光明； 王新；

【Author】 Shaobo Han;Guangming Chen;Xin Wang;Key Laboratory of Rubber-Plastics,Ministry of Education,Qingdao University of Science and Technology;Institut of Chemistry,Chinese Academy of Sciences;

【机构】 青岛科技大学教育部橡塑重点实验室； 中国科学院化学研究所；

【摘要】 热电材料能够实现电能和热能之间的直接转换,是一种重要的能源材料[1]。在本文中,我们合成了具有较高热电性能的聚吡咯包覆的还原氧化石墨烯(rGO)纳米片。首先,采用模板诱导原位单体聚合的方法,在十二烷基磺酸钠(SDS)存在下,使吡咯单体在rGO硬模板表面吸附、进而发生原位聚合,均匀地包覆在rGO表面。结果表明,rGO/PPy纳米复合材料的电导率和Seebeck系数与纯聚吡咯相比,均有显著提高,功率因子达到了3.01×10-6 W m-1 K-2,比纯聚吡咯高出84倍。SDS对于该纳米复合材料的制备和性能均有重要作用,不仅大大提高了rGO和吡咯在水中的分散性,明显加快了聚合反应速度,而且提高了聚吡咯的电导率。更多还原

【Abstract】 Reduced graphene oxide(rGO) nanosheets were conveniently enwrapped with polypyrrole(PPy), and the obtained composites exhibited greatly improved thermoelectric property. First, with the help of sodium dodecyl sulfate(SDS), uniform PPy coatings were conveniently grown on both sides of rGO nanosheet surfaces via template-directed in situ polymerization. The rGO/PPy co mposites exhibited greatly enhanced thermoelectric performance, whose power factor at room temperature could reach as high as 3.01 × 10-6 W m-1 K-2, greater than 84 times of that of the pure PPy polymerized with the presence of SDS.更多还原