Synthesis and Characterization of Electrodeposited C-PANI-Pd-Ni Composite Electrocatalyst for Methanol Oxidation

Joint Authors

Shekhar, S.
Thakur, B. K.
Priyadarshi, H.
Mahapatra, S. S.

Source

International Journal of Electrochemistry

Issue

Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-8, 8 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2014-10-16

Country of Publication

Egypt

No. of Pages

8

Main Subjects

Chemistry

Abstract EN

Electropolymerization of aniline at the graphite electrodes was achieved by potentiodynamic method.

Electrodeposition of Pd (C-PANI-Pd) and Ni (C-PANI-Ni) and codeposition of Pd-Ni (C-PANI-Pd-Ni) microparticles into the polyaniline (PANI) film coated graphite (C-PANI) were carried out under galvanostatic control.

The morphology and composition of the composite electrodes were obtained using scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDX) techniques.

The electrochemical behavior and electrocatalytic activity of the electrode were characterized using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and chronoamperometric (CA) methods in acidic medium.

The C-PANI-Pd-Ni electrode showed an improved catalytic performance towards methanol oxidation in terms of lower onset potential, higher anodic oxidation current, greater stability, lower activation energy, and lower charge transfer resistance.

The enhanced electrocatalytic activity might be due to the greater permeability of C-PANI films for methanol molecules, better dispersion of Pd-Ni microparticles into the polymer matrixes, and the synergistic effects between the dispersed metal particles and their matrixes.

American Psychological Association (APA)

Mahapatra, S. S.& Shekhar, S.& Thakur, B. K.& Priyadarshi, H.. 2014. Synthesis and Characterization of Electrodeposited C-PANI-Pd-Ni Composite Electrocatalyst for Methanol Oxidation. International Journal of Electrochemistry،Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1036651

Modern Language Association (MLA)

Mahapatra, S. S.…[et al.]. Synthesis and Characterization of Electrodeposited C-PANI-Pd-Ni Composite Electrocatalyst for Methanol Oxidation. International Journal of Electrochemistry No. 2014 (2014), pp.1-8.
https://search.emarefa.net/detail/BIM-1036651

American Medical Association (AMA)

Mahapatra, S. S.& Shekhar, S.& Thakur, B. K.& Priyadarshi, H.. Synthesis and Characterization of Electrodeposited C-PANI-Pd-Ni Composite Electrocatalyst for Methanol Oxidation. International Journal of Electrochemistry. 2014. Vol. 2014, no. 2014, pp.1-8.
https://search.emarefa.net/detail/BIM-1036651

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1036651