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Morphology-controlled PANI nanowire electrode by using deposition scan rate in H2SO4/PVA polymer electrolyte for electrochemical capacitor

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Abstract

Polyaniline (PANI) nanowire electrode was successfully prepared using electrodeposition method. The morphology, thickness, and electrochemical performance of PANI electrode can be controlled by varying the deposition scan rates. Lower deposition scan rate results in compact and aggregates of PANI nanowire morphology. The uniform nanowire of PANI was obtained at the applied scan rate of 100 mV s−1, and it was used as symmetric electrode coupled with H2SO4/polyvinyl alcohol (PVA) gel electrolyte. The different concentrations of H2SO4 acid in polymer electrolyte have influenced the electrochemical performance as well. The optimum specific capacitance and energy density of P100 PANI electrode in 3 M H2SO4/PVA gel polymer electrolyte was 377 F g−1 and 95.4 Wh kg−1 at the scan rate of 1 mV s−1. The good stability of the electrode in this system is applicable to many wearable electronics applications.

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Acknowledgments

We would like to thank the University of Malaya (grant nos. FP008-2013B and RP025 B-14AFR) for financial support. Rusi appreciate the Skim Bright Sparks University Malaya (SBSUM) for the scholarship awarded.

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Authors and Affiliations

  1. Center of Foundation Studies, International University of Malaya-Wales, City Campus, Jalan Tun Ismail, 50480, Kuala Lumpur, Malaysia

    Rusi

  2. Centre for Ionics University of Malaya, Department of Physics, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia

    C.-K. Sim & S. R. Majid

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  1. Rusi
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Correspondence to S. R. Majid.

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Rusi, Sim, CK. & Majid, S.R. Morphology-controlled PANI nanowire electrode by using deposition scan rate in H2SO4/PVA polymer electrolyte for electrochemical capacitor. Ionics 23, 1219–1227 (2017). https://doi.org/10.1007/s11581-016-1938-0

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  • DOI: https://doi.org/10.1007/s11581-016-1938-0

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