物理学报2012，Vol.61Issue(7)：376-381,6.
聚对苯撑/LiNi_（0.5）Fe_2O_4纳米复合热电材料的制备及其性能研究
Study on the preparation and properties of polyparaphenylene/ LiNi_（0.5）Fe_2O_4 nanocomposite thermoelectric materials
摘要
Abstract
Polyparaphenylene/ LiNi-ferrite nanocomposites are prepared by a novel rheological phase reaction method.The thermoelectric properties of the as-prepared nanocomposites are characterized and the effect of spark plasma sintering（SPS） conditions is investigated. The TEM images show that the size of LiNi-ferrite is around 100—300 nm and the polyparaphenylene has diffused boundaries outside it.The negative value of Seebeck coefficient confirms the n-type conduction,and the n-type conduction is attributed to hopping of electrons from Fe~（2＋） to Fe~（3＋） ions.It is found that the electrical conductivity of nanocomposite does not change with sintering time whereas the Seebeck coefficient decreases and thermal conductivity increases with sintering time.Therefore the figure of merit decreases.Because of the high electrical conductivity and low thermal conductivity of organic material and high Seebeck coefficient of inorganic material,the figure of merit of nanocomposites is improved.关键词
纳米复合/热电性能/聚对苯撑/LiNi_（0.5）Fe_2O_4Key words
nanocomposites/thermoelectric/polyparaphenylene/LiNi_(0.5)Fe_2O_4分类
化学化工引用本文复制引用
吴子华,谢华清..聚对苯撑/LiNi_（0.5）Fe_2O_4纳米复合热电材料的制备及其性能研究[J].物理学报,2012,61(7):376-381,6.基金项目
新世纪优秀人才计划 （）
东方学者岗位计划资助的课题~~ （）
