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Synthesis, characterization and supercapacitors of electrically conductive PPy/graphene/rare earth ions composites

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Abstract

PPy/graphene/rare earth ions (PPy/GR/RE3+) were prepared using an in situ chemical polymerization of the monomer in the presence of FeCl3 oxidant and p-toluenesulfonic acid dopant. The PPy/GR/RE3+ composites were characterized by FT-IR spectroscopy, four-point probe conductivity, scanning electron microscopy and transmission electron microscopy. The maximum conductivity of PPy/GR/Gd3+ composites is about 9.71 S/cm found with 1 wt% GR and 2 wt% Gd3+ at room temperature. The capacitance of the composite electrodes was investigated with cyclic voltammetry. As results of this study, the PPy/GR/Gd3+ was effective to obtain fully reversible and very fast faradaic reaction. Hence, the PPy/GR/Gd3+ could contribute to the pseudo-capacitive charge storage. The PPy/GR/Gd3+ exhibited higher specific capacitance of ~238 F/g at 1 A/g current density. Thermal gravimetric analysis demonstrates an improved thermal stability of PPy in the PPy/GR/Gd3+ composites.

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Acknowledgments

The authors would like to thank the financial supports of the National Natural Science Foundation of China (51262027), the financial support the Natural Science Foundation of Gansu Province (1104GKCA019; 1010RJZA023), Science and Technology Tackle Key Problem Item of Gansu Province (2GS064-A52-036-08) and the fund of the State Key Laboratory of Solidification Processing in NWPU (SKLSP201011). The authors would like to thank the Fundamental Research Funds for the Central Universities (31920130025, 31920130063).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China

    Zunli Mo

  2. Experiment Center of Northwest University for Nationalities, Lanzhou, 730030, China

    Wanhong Sun

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  1. Wanhong Sun
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  2. Zunli Mo
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Correspondence to Zunli Mo.

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Sun, W., Mo, Z. Synthesis, characterization and supercapacitors of electrically conductive PPy/graphene/rare earth ions composites. Polym. Bull. 71, 2173–2184 (2014). https://doi.org/10.1007/s00289-014-1177-3

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  • DOI: https://doi.org/10.1007/s00289-014-1177-3

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