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Formic acid electrooxidation catalyzed by Pd/SmOx-C hybrid catalyst in fuel cells

K. Q. Wang ; B. Wang ; J. F. Chang ; Ligang Feng (Institutionen för teknisk fysik, Kemisk fysik) ; W. Xing
Electrochimica Acta (0013-4686). Vol. 150 (2014), p. 329-336.
[Artikel, refereegranskad vetenskaplig]

Pd nanoparticles supported on Samarium oxide modified carbon (SmOx/C) hybrid support for the electrooxidation of formic acid is studied. The morphology, composition and electrocatalytic properties are investigated by physical characterization and electrochemical measurements. The results demonstrate that Pd/SmOx-C catalyst has excellent catalytic activity and stability for formic acid oxidation. The current density is about 1.32 times that of the Pd/C catalyst. The electronic effect and oxygen-containing species provided by SmOx accelerate the rate of formic acid electrooxidation. When integrated into the anode of a direct formic acid fuel cell, the maximum power density of 167 mW cm (2) is obtained, which is about 1.4 times that of a commercial Pd/C catalyst.

Nyckelord: Formic acid electrooxidation, Fuel cells, Pd catalyst, Tafel slope

Denna post skapades 2015-01-09.
CPL Pubid: 210336


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Institutionen för teknisk fysik, Kemisk fysik (1900-2015)



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