Universal Journal of Electrical and Electronic Engineering Vol. 5(3), pp. 45 - 55
DOI: 10.13189/ujeee.2017.050301
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Role of Dopants on Ceria-based Anodes for IT-SOFCs Powered by Hydrocarbon Fuels


Araceli Fuerte *, Rita Ximena Valenzuela , María José Escudero
Energy Department, Centre for Energy, Environment and Technology (CIEMAT), Spain

ABSTRACT

The direct use of hydrocarbon or hydrocarbon-derived fuels to generate electrical power has the potential to accelerate substantially the use of fuel cells in transportation and distributed-power applications. Most fuel-cell research has involved the use of hydrogen as the fuel, although the practical generation and storage of hydrogen remains an important technological hurdle. Although hydrocarbon fuels have been successfully oxidised or reformed electrochemically, the susceptibility to carbon formation or poor power densities has prevented the application of these fuels in practical applications. In this manuscript, the effect of different dopants on the properties of Cu-ceria based anodes for IT-SOFCs powered by hydrocarbon fuels has been explored. Four dopants atoms (Co, Ca, Ag and Rh) with different properties and concomitant varied effects on properties of the final material are studied. They have been selected in order to improve the electrical and textural properties of anode material as well as the catalytic activity for hydrocarbon oxidation. Results revealed a strong dependence of the final properties of the anode formulation and mechanism involved in the electro-oxidation of the different fuels. Different doping successfully improves the behaviour of anode material for IT-SOFCs powered by hydrocarbon fuels and reasonable power densities can be achieved.

KEYWORDS
Ceria Based Anodes, SOFC, Dopants, Alternative Fuels

Cite this paper
Araceli Fuerte , Rita Ximena Valenzuela , María José Escudero (2017). Role of Dopants on Ceria-based Anodes for IT-SOFCs Powered by Hydrocarbon Fuels. Universal Journal of Electrical and Electronic Engineering, 5 , 45 - 55. doi: 10.13189/ujeee.2017.050301.