Picture of DNA strand

Pioneering chemical biology & medicinal chemistry through Open Access research...

Strathprints makes available scholarly Open Access content by researchers in the Department of Pure & Applied Chemistry, based within the Faculty of Science.

Research here spans a wide range of topics from analytical chemistry to materials science, and from biological chemistry to theoretical chemistry. The specific work in chemical biology and medicinal chemistry, as an example, encompasses pioneering techniques in synthesis, bioinformatics, nucleic acid chemistry, amino acid chemistry, heterocyclic chemistry, biophysical chemistry and NMR spectroscopy.

Explore the Open Access research of the Department of Pure & Applied Chemistry. Or explore all of Strathclyde's Open Access research...

Electric equivalent circuit model of an alkaline fuel cell

Durr, M. and Gair, S. and Cruden, A.J. and McDonald, J.R. (2005) Electric equivalent circuit model of an alkaline fuel cell. WSEAS Transactions on Circuits and Systems, 4 (9). pp. 1-6. ISSN 1109-2734

Full text not available in this repository.Request a copy from the Strathclyde author

Abstract

The Centre of Economic Renewable Power Delivery (CERPD) at the University of Strathclyde has developed various fuel cell (FC) systems for stationary and vehicular applications. The aim of the research is to design and build reliable and cost efficient FC systems, which could replace existing conventional technology in the near future. To size each component of the system efficiently the behaviour of the alkaline fuel cell (AFC) stack has been modelled. The electric equivalent circuit model developed allows easy characterization of the fuel cell stack by electric parameters, such as internal resistance and stack capacitance. The model is used to forecasts the behaviour of the fuel cell stack under various operating conditions. A mathematical analysis of the suggested equivalent circuit is presented in the paper. The so-called Nernst potential, which describes the open circuit voltage of the stack, is calculated using thermodynamic theory. Electrochemistry theory has been used to explain the causes of the different losses within the FC, such as activation, ohmic and concentration losses. In the model these losses are expressed using electric circuit elements. The circuit elements are derived from experimental tests, which are described in detail in the paper.