Citation: LU Yan, SONG Ying, SUN Qiu, WANG Fu-Ping. Thermoelectric Properties of Conducting Polyaniline Co-Doped with Hydrochloric Acid and Sulfosalicylic Acid[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(9): 1887-1892. doi: 10.3969/j.issn.1001-4861.2013.00.276 shu

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

1.
School of Chemical Engineering and Technology, Harbin Institute of Technology, Harbin 150001, China

Received Date: 20 December 2012
Available Online: 2 May 2013
Fund Project: 国家自然科学基金(No.50772026)资助项目。 (No.50772026)

Polyaniline (PANi) co-doped with hydrochloric acid (HCl) 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 HCl 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=0.25:1 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.
- polyaniline;sulfosalicylic acid;hydrochloric acid;co-doped;thermoelectric properties
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沈阳化工大学材料科学与工程学院沈阳 110142