SCI和EI收录∣中国化工学会会刊

›› 2017, Vol. 25 ›› Issue (5): 671-675.DOI: 10.1016/j.cjche.2016.10.018

• Energy, Resources and Environmental Technology • Previous Articles     Next Articles

The effect of transition metal ions (M2+=Mn2+, Ni2+, Co2+, Cu2+) on the chemical synthesis polyaniline as counter electrodes in dye-sensitized solar cells

Kezhong Wu, Lei Chen, Weizhen Cui, Bei Ruan, Mingxing Wu   

  1. Key Laboratory of Inorganic Nano-materials of Hebei Province, Department of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
  • Received:2016-05-12 Revised:2016-10-24 Online:2017-07-06 Published:2017-05-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (21473048,21303039),the Natural Science Foundation of Hebei Province (B2016205161,B2015205163),and the 2015 Hebei Province Undergraduate Training Programs for Innovation and Entrepreneurship.

The effect of transition metal ions (M2+=Mn2+, Ni2+, Co2+, Cu2+) on the chemical synthesis polyaniline as counter electrodes in dye-sensitized solar cells

Kezhong Wu, Lei Chen, Weizhen Cui, Bei Ruan, Mingxing Wu   

  1. Key Laboratory of Inorganic Nano-materials of Hebei Province, Department of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China
  • 通讯作者: Kezhong Wu,E-mail address:wukzh688@163.com
  • 基金资助:
    Supported by the National Natural Science Foundation of China (21473048,21303039),the Natural Science Foundation of Hebei Province (B2016205161,B2015205163),and the 2015 Hebei Province Undergraduate Training Programs for Innovation and Entrepreneurship.

Abstract: The effect of transition metal ions (M2+=Mn2+, Ni2+, Co2+, Cu2+) on the chemical synthesis of polyaniline (PANI) used as a platinum-free counter electrode (CE) in dye-sensitized solar cells (DSSCs) was investigated. PANI was synthesized by co-polymerization of aniline in the presence of different transition metal ions by using potassium dichromate in acidic medium. It was found that the ion doping of PANI showed a certain catalytic activity for the regeneration of traditional iodide/triiodide (I-/I3 -) redox couples. The power conversion efficiency (η) of PANI CEs doped with Mn2+, Ni2+, Co2+ (4.41%, 2.36% and 2.10%, respectively) were higher than 1.94%, the value measured for PANI CE without doping. Doping with Ca2+ decreased the power conversion efficiency of PANI CE (PANI-Ca2+ η=1.41%). The electrical properties of the PANI, PANI-Ni2+, PANI-Co2+, PANI-Mn2+ and PANI-Ca2+ were studied by cyclic voltammetry (CV), impedance (EIS), and Tafel polarization curve. The experimental results confirmed that PANI was affected by the doping of different transition metal ions (M2+=Mn2+, Ni2+, Co2+, Ca2+). These results indicate a potential application of ion doped PANI as counter electrode in cost-effective DSSCs.

Key words: Dye-sensitized solar cell, Counter electrode, Polyaniline, Transition metal ion, Power conversion efficiency

摘要: The effect of transition metal ions (M2+=Mn2+, Ni2+, Co2+, Cu2+) on the chemical synthesis of polyaniline (PANI) used as a platinum-free counter electrode (CE) in dye-sensitized solar cells (DSSCs) was investigated. PANI was synthesized by co-polymerization of aniline in the presence of different transition metal ions by using potassium dichromate in acidic medium. It was found that the ion doping of PANI showed a certain catalytic activity for the regeneration of traditional iodide/triiodide (I-/I3 -) redox couples. The power conversion efficiency (η) of PANI CEs doped with Mn2+, Ni2+, Co2+ (4.41%, 2.36% and 2.10%, respectively) were higher than 1.94%, the value measured for PANI CE without doping. Doping with Ca2+ decreased the power conversion efficiency of PANI CE (PANI-Ca2+ η=1.41%). The electrical properties of the PANI, PANI-Ni2+, PANI-Co2+, PANI-Mn2+ and PANI-Ca2+ were studied by cyclic voltammetry (CV), impedance (EIS), and Tafel polarization curve. The experimental results confirmed that PANI was affected by the doping of different transition metal ions (M2+=Mn2+, Ni2+, Co2+, Ca2+). These results indicate a potential application of ion doped PANI as counter electrode in cost-effective DSSCs.

关键词: Dye-sensitized solar cell, Counter electrode, Polyaniline, Transition metal ion, Power conversion efficiency