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Development of CCM Water Content Distribution Measurement System for Fuel Cell Stack

Article of Honda R&D Technical Review Vol.28 No.1

Summary

A system was developed that uses impedance measurement of membrane electrode assemblies to quantify water content distribution in the polymer electrolyte membrane. That distribution influences fuel cell degradation factors including membrane damage in polymer electrolyte membranes and functional deterioration of electrode catalysts.
The impedance measurement sensors in this system are fabricated using flexible printed circuit technology to form thin shunt resistors for current measurement. This allows sensors to be produced in the same form as the membrane electrode assemblies.
With the development of these sensors, it became possible to measure the water content distribution in polymer electrolyte membranes in a fuel cell stack in real time while it is generating electricity. Those measurement results have been put to use in the 2016 model year for control of the water content of electrolyte membranes in actual fuel cell vehicles.

Reference

(1) Saito, N., Kikuchi, H., Nakao, Y.: New Fuel Cell Stack for FCX Clarity, Honda R&D Technical Review, Vol. 21, No. 1, p. 16-23
(2) Nishikawa, H.: Nenryodenchi no Gijutsu -Kotaikoubunshigata no Kadai to Taisaku-, Tokyo Denki University Press, p. 84-113, (2010) (in Japanese)
(3) Wang, H., Yuan, X-Z., Li, H.: PEM FUEL CELL DIAGNOSTIC TOOLS, CRC Press, 260p., (2012)
(4) Hickner, M. A., Siegel, N. P., Chen, K. S., Hussey, D. S., Jacobson, D. L.: Observations of Transient Flooding in a Proton Exchange Membrane Fuel Cell Using Time-Resolved Neutron Radiography, Journal of The Electrochemical Society, Vol. 157, Issue 1, B32-B38, (2010)
(5) Eller, J., Rosén, T., Marone, F., Stampanoni, M., Wokaun, A., Büchi, F. N.: Progress in In Situ X-Ray Tomographic Microscopy of Liquid Water in Gas Diffusion Layers of PEFC, Journal of The Electrochemical Society, 158 (8), B963-B970, (2011)
(6) Teranishi, K., Tsushima, S., Hirai, S.: Analysis of Water Transport in PEFCs by Magnetic Resonance Imaging Measurement, Journal of The Electrochemical Society, 153 (4), A664-A668, (2006)
(7) Chiba, H., Iwasawa, C.: Optimization of Fuel Cell Generation Environment by Water Observation using Neutron Radiography, Honda R&D Technical Review, Vol. 25, No. 1, p. 122-131
(8) Sugishita, M., Ohmori, S.: Life Prediction Technology of Fuel Cell Polymer Electrolyte Membrane under Mechanical Degradation, Honda R&D Technical Review, Vol. 28, No. 1, p. 59-67
(9) Nagumo, K., Inoue, M.: Numerical Prediction of Water Content Distribution of Catalyst Coated Membrane of Fuel Cell Stack using Simulation, Honda R&D Technical Review, Vol. 28, No. 1, p. 26-33
(10) Iwanari, T., Miyajima, K., Furusawa, K., Inoue, M.: Real-time Measurement of Water Content of CCM in On-board Fuel Cell Stack System, Honda R&D Technical Review, Vol. 28, No. 1, p. 34-40

Author (organization or company)

Masahiko SATO(Automobile R&D Center)、Hiroto CHIBA(Automobile R&D Center)、Masajiro INOUE(Automobile R&D Center)

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