盐酸和磺基水杨酸复合掺杂聚苯胺的热电性能  

Thermoelectric Properties of Conducting Polyaniline Co-Doped with Hydrochloric Acid and Sulfosalicylic Acid

作　　者：卢艳[1] 宋英[1] 孙秋[1] 王福平[1] 

机构地区：[1]哈尔滨工业大学化工学院,哈尔滨150001

出　　处：《无机化学学报》2013年第9期1887-1892,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.50772026)资助项目

摘　　要：以苯胺为单体,过硫酸铵为氧化剂,采用化学氧化聚合法在盐酸和磺基水杨酸混合溶液中制备了导电聚苯胺。通过XRD、SEM、FTIR等分析手段,对所得产物的结构进行研究,并探讨在相同聚合条件下,不同的磺基水杨酸和盐酸的物质的量浓度比(cSSA∶cHCl)对聚苯胺热电性能的影响。结果显示,混合酸掺杂聚苯胺的电导率随cSSA∶cHCl的增加而增大,但Seebeck系数的变化趋势却与之相反。当cSSA∶cHCl=0.25:1时,掺杂态聚苯胺的功率因子在175℃时达到最大值为0.46μW.m-1.K-2,分别是相同条件下HCl和SSA掺杂聚苯胺的1.7和1.9倍。这表明适当配比的有机酸与无机酸混合掺杂比单一酸掺杂更有利于聚苯胺热电性能的提高。Polyaniline （pANi） co-doped with hydrochloric acid （HC1） and sulfosalicylic acid （SSA） were synthesized by chemical oxidization polymerization with aniline as monomer and ammonium persulfate as oxidant. The structures of the polyaniline were characterized by XRD, SEM and FTIR. Effects of the molar concentration ratio （c_SSA：c_HCl） on the thermoelectric properties of the polyaniline co-doped with HC1 and SSA in different proportions were investigated under the same condition. It was found that the electrical conductivity of the polyaniline increased as increasing of c_SSA：c_HCl while the changes in Seebeck coefficient showed an opposite trend. The power factor of c_SSA：c_HCl=0.25：l sample reaches 0.46 μW.m-1-K-2 at 175 ℃, which is 1.7 and 1.9 times than that of SSA doped and HCl doped polyaniline, respectively. This indicates that the co-doping with an appropriate ratio of organic acid and inorganic acid is more effective to improve the thermoelectric properties of polyaniline than single acid.

关 键 词：聚苯胺 磺基水杨酸 盐酸 复合掺杂 热电性能 

分 类 号：O482.6[理学—固体物理]