Title :
Development of high quality Pt-CeO2based anode materials for direct methanol fuel cell applications
Author :
Mori, Toshiyuki ; Takahashi, Motoi ; Vinu, Ajayan ; Takenouchi, Satoshi ; Kim, Je-deok ; Kobayashi, Hidehiko ; Drennan, John
Author_Institution :
Nat. Inst. for Mater. Sci.
Abstract :
Pt-pure Ceria (CeO2) supported by carbon black (CB) anode was synthesized for development of eco-electrode material for fuel cell application. The onset potential for methanol oxidation reaction on Pt-round shaped CeO2 shifted to a lower potential as compared with that on Pt-mixed shape (i.e. round shape + rod like shape) CeO2/CB. This onset potential on Pt-mixed shape CeO2 /CB anode at 60degC was equal to that on commercially available Pt-Ru/CB anode, although the on-set potential on Pt-mixed shape CeO2/CB was lower than that on Pt-Ru/CB at room temperature. This suggests that the anode performance of Pt-CeO2/CB anode is improved at operation temperature (80degC) of fuel cell by enhancement of diffusion and formation of oxygen species from nano-sized CeO2 particles. It is expected that the nano-size Pt-pure CeO 2/CB anode in the present study will be one of promising eco-anode materials for development of direct methanol fuel cells (DMFCs)
Keywords :
cerium compounds; diffusion; electrochemical electrodes; nanoparticles; oxidation; platinum; proton exchange membrane fuel cells; reduction (chemical); voltammetry (chemical analysis); 293 to 298 K; 60 C; C; Pt-CeO2; anode materials; carbon black anode; eco-electrode material; methanol fuel cell application; methanol oxidation reaction; nano-sized particles; oxygen diffusion; oxygen formation; polymer electrolyte; Anodes; Electrodes; Fuel cells; Hydrogen; Inorganic materials; Magnetooptic recording; Methanol; Organic materials; Oxidation; Shape; CO poisoning; Direct methanol fuel cell; New eco-anode; Polymer electrolyte; nano-CeO;
Conference_Titel :
Environmentally Conscious Design and Inverse Manufacturing, 2005. Eco Design 2005. Fourth International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
1-4244-0081-3
DOI :
10.1109/ECODIM.2005.1619381
