2024-03-29T15:38:49Z
https://tsukuba.repo.nii.ac.jp/oai
oai:tsukuba.repo.nii.ac.jp:00027544
2022-04-27T08:54:25Z
152:1725
3:62:5591:1612
Experimentalstudy on porouscurrentcollectors of PEMelectrolyzers
石田, 政義
Ito, Hiroshi
Maeda, Tetsuhiko
Nakano, Akihiro
Hwang, Chul Min
Ishida, Masayoshi
Kato, Atsushi
Yoshida, Tetsuya
© 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. NOTICE: this is the author’s version of a work that was accepted for publication in International journal of hydrogen energy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International journal of hydrogen energy, VOL37, ISSUE9, 2012, DOI:10.1016/j.ijhydene.2012.01.095
Experimentalstudy on proton exchange membrane (PEM) electrolyzer was carried out focusing on the effect of pore structural properties of currentcollectors, such as porosity and pore diameter. Various titanium (Ti)-felt substrates with different porosities and pore diameters (measured by capillary flow porometry) were used as the anode currentcollector. Results show that when the mean pore diameter of the currentcollector was larger than 10 μm, the electrolysis performance improved with decreasing pore diameter. In contrast, changes in porosity had no significant effect on the cell performance when the porosity exceeded 0.50. The flow pattern of two-phase flow in the flow channel was discussed in terms of its relationship to bubble size and to pore diameter of the currentcollector. Finally, correlation between the calculated membrane resistance and the measured pore diameter of the currentcollectors suggest that larger bubbles generated from larger pores tend to become long bubbles in the channel, thus hindering the water supply to the membrane.
Elsevier Ltd.
2012-05
eng
journal article
http://hdl.handle.net/2241/117453
https://tsukuba.repo.nii.ac.jp/records/27544
10.1016/j.ijhydene.2012.01.095
0360-3199
AA00680410
International journal of hydrogen energy
37
9
7418
7428
https://tsukuba.repo.nii.ac.jp/record/27544/files/IJHE_37-9.pdf
application/pdf
466.7 kB
2013-12-25