DocumentCode :
3189371
Title :
High performance fuel cell
Author :
Alodan, Maher ; Alhoshan, Mansour ; Parmar, Kaushik ; Alzaben, Abdullah
Author_Institution :
King Abdullah City for Atomic & Renewable Energy, Riyadh, Saudi Arabia
fYear :
2010
fDate :
18-22 Dec. 2010
Firstpage :
468
Lastpage :
471
Abstract :
There is considerable recent interest in forming nano-materials with enhanced or unique properties and there has already been a great deal of interest in applying nanotechnology to improve fuel cell performance. Researchers have shown that the power output of fuel cells can be enhanced by using carbon nanotubes as catalyst supports. This paper aims to combine the advantages high resolution lithography to achieve high structure resolution over a large surface area for fuel cell electrodes. Technique to develop a high surface area electrode is to use anodization of selected metals to produce oxide nanotubes as a template. Titanium has been used as a substrate to grow Ti-oxide nanotubes in 0.5 wt% HF electrolytes, resulting in a well ordered structure to control the flow of reactant to the membrane. We used nanolithography techniques to assist and control the growth of the oxide tubes. TiO2 nanotubes of diameter 60-75 nm and length of 220-250 nm were formed. Finally we incorporated the optimized catalyst/electrode design into a prototype fuel cell using a commercial Nafion membrane and evaluated its performance. Prototype miniature fuel cell showed maximum current density approximately as high as 130mA/cm2 and open circuit voltage of 0.75 V.
Keywords :
anodisation; catalysts; current density; electrochemical electrodes; electrolytes; fuel cells; membranes; nanolithography; titanium compounds; HF electrolytes; TiO2; carbon nanotubes; catalyst-electrode design; commercial Nafion membrane; current density; fuel cell electrodes; high performance fuel cell; high resolution lithography; high structure resolution; high surface area electrode; nanolithography techniques; nanomaterials; nanotechnology; open circuit voltage; size 220 nm to 250 nm; size 60 nm to 75 nm; voltage 0.75 V; Electrodes; Fuel cells; Fuels; Nanotubes; Oxidation; Prototypes; Titanium;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conference and Exhibition (EnergyCon), 2010 IEEE International
Conference_Location :
Manama
Print_ISBN :
978-1-4244-9378-4
Type :
conf
DOI :
10.1109/ENERGYCON.2010.5771727
Filename :
5771727
Link To Document :
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