TY - JOUR
T1 - Simultaneous visualization of oxygen partial pressure, current density, and water droplets in serpentine fuel cell during power generation for understanding reaction distributions
AU - Takanohashi, Kazuhiro
AU - Suga, Takeo
AU - Uchida, Makoto
AU - Ueda, Toshihide
AU - Nagumo, Yuzo
AU - Inukai, Junji
AU - Nishide, Hiroyuki
AU - Watanabe, Masahiro
N1 - Funding Information:
This study was supported by ?HiPer-FC project? and ?SPer-FC project? of New Energy and Industrial Technology Development Organization (NEDO), and the program ?Development of Systems and Technology for Advanced Measurement and Analysis? of Japan Science and Technology Agency (JST), Japan.
Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Understanding the reaction distributions inside a polymer electrolyte fuel cell (PEFC) is essential for the higher performance and durability. We have developed a new see-through cell and visualized the distributions of oxygen partial pressure and current density inside a running PEFC at the temperature of 40 and 80 °C and the relative humidity of 53%. The oxygen utilization was changed from 0% to 80% by changing the current density. At higher oxygen utilizations, the current density was higher and therefore the water generation. Generated water droplets in the flow channel were also visualized, allowing for the simultaneous visualization of the distribution of the oxygen partial pressure, current density, and water droplets. By combining the observations of all three parameters, the reactions inside a membrane-electrode assembly were discussed.
AB - Understanding the reaction distributions inside a polymer electrolyte fuel cell (PEFC) is essential for the higher performance and durability. We have developed a new see-through cell and visualized the distributions of oxygen partial pressure and current density inside a running PEFC at the temperature of 40 and 80 °C and the relative humidity of 53%. The oxygen utilization was changed from 0% to 80% by changing the current density. At higher oxygen utilizations, the current density was higher and therefore the water generation. Generated water droplets in the flow channel were also visualized, allowing for the simultaneous visualization of the distribution of the oxygen partial pressure, current density, and water droplets. By combining the observations of all three parameters, the reactions inside a membrane-electrode assembly were discussed.
KW - Current density
KW - Liquid water droplet
KW - Oxygen partial pressure
KW - Polymer electrolyte fuel cell
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U2 - 10.1016/j.jpowsour.2017.01.047
DO - 10.1016/j.jpowsour.2017.01.047
M3 - Article
AN - SCOPUS:85009724182
VL - 343
SP - 135
EP - 141
JO - Journal of Power Sources
JF - Journal of Power Sources
SN - 0378-7753
ER -