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Development and Application of a Sample Holder for In Situ Gaseous TEM Studies of Membrane Electrode Assemblies for Polymer Electrolyte Fuel Cells

Published online by Cambridge University Press:  30 August 2017

Takeo Kamino ,
Toshie Yaguchi  and
Takahiro Shimizu
Takeo Kamino*
Affiliation:
Fuel Cell Nanomaterials Center, University of Yamanashi, 6-43 Miyamae-cho, Kofu 400-0021, Japan Vacuum Device Inc.,1285-5 Iijima-cho, Mito, Ibaraki 311-4155, Japan
Toshie Yaguchi
Affiliation:
Advanced Microscope Systems Design Department, Hitachi High Technologies Corp., 882 Ichige, Hitachinaka, Ibaraki 312-0057, Japan
Takahiro Shimizu
Affiliation:
FC-EV Research Division, Japan Automobile Research Institute, 2530 Karima, Tsukuba, Ibaraki 305-0822, Japan
*
*Corresponding author. tkamino@yamanashi.ac.jp
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Abstract

Polymer electrolyte fuel cells hold great potential for stationary and mobile applications due to high power density and low operating temperature. However, the structural changes during electrochemical reactions are not well understood. In this article, we detail the development of the sample holder equipped with gas injectors and electric conductors and its application to a membrane electrode assembly of a polymer electrolyte fuel cell. Hydrogen and oxygen gases were simultaneously sprayed on the surfaces of the anode and cathode catalysts of the membrane electrode assembly sample, respectively, and observation of the structural changes in the catalysts were simultaneously carried out along with measurement of the generated voltages.

Keywords

in situ TEMpolymer electrolyte fuel cellmembrane electrode assemblyelectrochemical measurement
Type
Instrumentation and Software
Information
Microscopy and Microanalysis , Volume 23 , Issue 5 , October 2017 , pp. 945 - 950
Copyright
© Microscopy Society of America 2017 

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