Nanosized composite electrodes based on polyaniline/carbon nanotubes towards methanol oxidation

Muge Civelekoglu-Odabas, Ipek Becerik*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Background: Direct methanol fuel cells as a clean and efficient energy conversion method for portable electronic devices and electric vehicles are a very popular subject in science and engineering. Up to now, the most effective anode electrode materials for direct methanol fuel cells are Pt-Ru, used mainly as bimetallic catalysts dispersed on a highly active conductive support, such as conducting polymer, carbon-based catalysts, or a composite matrix composed of both. Objective: The main objective is to decrease the amount of precious metal-Pt required for financial considerations and to overcome the insufficient oxidation reactions’ rate of the fuel, which lead to the inevitable, naturally high, overpotential in fuel cell applications. Thereby, current research addresses the preparation of Pt, Pt-Ru, Pt-Ru-Pd and Pt-Ru-Mo metal nanoparticles modified by both polyaniline-multi-wall carbon nanotubes and polianiline-functionalized multi-wall carbon nanotubes composites and their activity in the methanol electro-oxidation. Methods: All of the composite surfaces were successfully prepared using electrochemical methodologies. A Citrate method was used for the preparation of metal nanoparticles. A comparative study was conducted on each stage of the investigation. The modified surfaces were characterized and analyzed by SEM, EDX, XRD, Raman, and TEM. Results: According to the spectroscopic measurements, all particles synthesized were detected as nanoscale. Binary and ternary catalysts supported on composite surfaces had higher activity and efficiency when compared to monometallic systems. Conclusion: The fabricated electrodes showed comparable catalytic activity, long-term stability, and productivity towards direct methanol fuel cell applications in acidic media.

Original languageEnglish
Pages (from-to)654-668
Number of pages15
JournalCurrent Nanoscience
Issue number6
Publication statusPublished - 2019

Bibliographical note

Publisher Copyright:
© 2019 Bentham Science Publishers.


The authors thank the Research Fund of Istanbul Technical University (ITU) for financial support (Grant no: 37550). The authors thank the Research Fund of Istanbul Technical University (ITU) for financial support (Grant no: 37550).. The authors thank the NAB?LTEM from Nam?k Kemal University, Tekirdag for SEM, EDX and Raman Measurements, DAYTAM From Ataturk University, Erzurum for XRD Measurements and Dr. S. Turan from Anadolu University, Eski?ehir for TEM Measurements.

FundersFunder number
Nam?k Kemal University
Istanbul Teknik Üniversitesi37550
Anadolu Üniversitesi


    • Carbon nanotubes
    • Direct methanol fuel cells
    • Methanol electrooxidation
    • Platinum-based nanoparticles
    • Polyaniline
    • Portable electronic devices


    Dive into the research topics of 'Nanosized composite electrodes based on polyaniline/carbon nanotubes towards methanol oxidation'. Together they form a unique fingerprint.

    Cite this