ISSN 2456-0235

International Journal of Modern Science and Technology


​​​​​International Journal of Modern Science and Technology, Vol. 2, No. 5, 2017, Pages 193-200.


Performance of Pt–Ru–Ni/MC ternary electrocatalyst on methanol oxidation reaction in membraneless fuel cells  

P. Ramar¹, M. Chitralekha²
¹Department of Chemistry, Government Arts College, Ariyalur - 621 713, India.                       

²Department of Chemistry, D G Government Arts College, Mayiladuthurai, India. 

*Corresponding author’s e-mail:

In the present work, mesoporous carbon (MC) supported Pt–Ni, Pt–Ru, and Pt–Ru–Ni electrocatalysts with different atomic ratios were synthesized by NaBH4 reduction method to study the electro-oxidation of methanol in a MLMFC. The synthesized electrocatalysts were characterized by TEM, EDX and XRD analyses. The Pt metal was the predominant material in all the samples, with peaks attributed to the face-centered cubic (fcc) crystalline structure. The TEM analysis indicated that the prepared catalysts had similar particle morphology, and their particle sizes were 3–5 nm. The electrocatalytic activities of the synthesized electrocatalysts were characterized by cyclic voltammetry (CV) and chronoamperometry (CA). During the experiments performed on single membraneless fuel cells, Pt50Ru40Ni10/MC performed better among all the catalysts prepared with power density of 38.1 mW cm−2. The enhanced methanol oxidation activity by Ni in Pt50Ru40Ni10/MC can be attributed to the electronic effect as the result of the modification of electronic properties of Pt and the various oxidation states of Ni. In our work, for the first-time mesoporous carbon-supported binary Pt–Ru, Pt–Ni and ternary Pt–Ru–Ni anode catalysts were successfully tested in a single membraneless fuel cell using 1.0 M methanol as the fuel and 0.1 M sodium percarbonate as the oxidant in the presence of 0.5 M H2SO4 as the electrolyte at room temperature.

​​Keywords: Mesoporous carbon; Platinum; Nickel; Ruthenium; Methanol; Catalysts.


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