Hydrogen Science and Engineering by Stolten Detlef Emonts Bernd & Bernd Emonts

Author:Stolten, Detlef,Emonts, Bernd & Bernd Emonts
Language: eng
Format: epub
ISBN: 9783527332380
Publisher: John Wiley & Sons, Inc.
Published: 2015-11-02T00:00:00+00:00

23.3.2.8 Other Potential Contaminants

Other potential contaminants like phosphorus, metal–organic compounds, and so on can be present in specific fuel sources. However, to date their effects have not been so well investigated and thus they are not discussed in further detail here.

23.4 Pollutant Level Requirements

Table 23.5 summarizes the main impurities along with typical limits considered for safe operation of low and high temperature fuel cells. The values given represent the results of experiments performed at very different operation conditions. This is the reason why the ranges given are quite broad; depending on cell type and material, for different operating temperatures, pressures, current density, and so on the impact of certain contaminants changes tremendously. However, the lower value given usually represents a safe value for most operating conditions and cell types.

Table 23.5

Contaminant limits suggested for safe operation of fuel cells [11,59–64].

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