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Effect of Embedded TiO2 in Carbon Nanofiber Support on Pd Catalyst Activity for Formic Acid Oxidation

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Abstract:

Pd supported on TiO2-embedded carbon nanofibers (Pd/TECNF) were prepared as the anode catalyst for direct formic acid fuel cells (DFAFCs) using an electrospinning technique. The effect of the TiO2 content on the catalytic activity of Pd was investigated based on the electrochemical measurements of cyclic voltammetry (CV), chronoamperometry (CA), and also characterization by XRD, EDX, FE-SEM and CO stripping. The activity was significantly increased by an increase in the TiO2 content up to Ti/C=0.44 and then decreased. The maximized activity was improved eight fold by the TiO2 addition. The increased activity was attributed to the increased electrochemically active surface area due to the modified surface of the nanofibers.

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Periodical:

Key Engineering Materials (Volume 698)

Pages:

41-46

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.698.41

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Online since:

July 2016

Authors:

Tomohiro Aoyama*, Yuki Nishio, Hirokazu Ishitobi, Nobuyoshi Nakagawa

Keywords:

Direct Formic Acid Fuel Cell, Electrospinning, Formic Acid Oxidation, Pd Nanoparticle Catalyst, TiO2-Embedded Carbon Nanofiber Support

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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