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Physical Characterization of Electrocatalysts

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PEM Fuel Cell Electrocatalysts and Catalyst Layers

Abstract

In recent years, fuel cells have attracted considerable attention due to their high energy efficiency with zero emissions [1]. Electrocatalysts are some of the key materials used in low-temperature fuel cells such as the polymer electrolyte membrane fuel cell (PEMFC) and the direct methanol fuel cell (DMFC). Creating high-performance catalysts is widely recognized as a key step for the further development and commercialization of low-temperature fuel cells.

The physical characterization of electrocatalysts is very important for several areas of research: (1) preparing new types of electrocatalysts with high activity and high selectivity, (2) recognizing electrocatalyst structures, and (3) investigating the mechanisms of catalysts and certain additives.

Electrocatalysts for application in low-temperature fuel cells (including PEMFCs and DMFCs) constitute a special type of heterogeneous catalyst. The most important difference between an electrocatalyst and a normal heterogeneous catalyst is that the former should have good conductivity, whereas most typical heterogeneous catalysts are insulators; therefore, most characterization techniques for electrocatalysts are the same as for regular heterogeneous catalysts, but some special techniques are required for electrocatalysts because of their conductivity.

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  1. Shijun Liao
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  2. Baitao Li
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  1. Institute for Fuel Cell Innovation (IFCI), National Research Council Canada (NRC), 4250 Wesbrook Mall, BC , V6T 1W5, Vancouver, Canada

    Jiujun Zhang

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Liao, S., Li, B., Li, Y. (2008). Physical Characterization of Electrocatalysts. In: Zhang, J. (eds) PEM Fuel Cell Electrocatalysts and Catalyst Layers. Springer, London. https://doi.org/10.1007/978-1-84800-936-3_10

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