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Spectrophotometric Analysis of Phosphoric Acid Leakage in High-Temperature Phosphoric Acid-Doped Polybenzimidazole Membrane Fuel Cell Application
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نویسنده
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han s. ,jeong y.h. ,jung j.h. ,begley a. ,choi e. ,yoo s.j. ,jang j.h. ,kim h.-j. ,nam s.w. ,kim j.y.
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منبع
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journal of sensors - 2016 - دوره : 2016 - شماره : 0
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چکیده
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High-temperature proton exchange membrane fuel cells (ht-pemfcs) utilize a phosphoric acid- (pa-) doped polybenzimidazole (pbi) membrane as a polymer electrolyte. the pa concentration in the membrane can affect fuel cell performance,as a significant amount of pa can leak from the membrane electrode assembly (mea) by dissolution in discharged water,which is a byproduct of cell operation. spectrophotometric analysis of pa leakage in pa-doped polybenzimidazole membrane fuel cells is described here. this spectrophotometric analysis is based on measurement of absorption of an ion pair formed by phosphomolybdic anions and the cationoid color reagent. different color reagents were tested based on pa detection sensitivity,stability of the formed color,and accuracy with respect to the amount of pa measured. this method allows for nondestructive analysis and monitoring of pa leakage during ht-pemfcs operation. © 2016 seungyoon han et al.
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آدرس
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fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul,south korea,department of chemical and biological engineering,korea university,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul,south korea,green school,korea university,145 anam-ro,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul,south korea,green school,korea university,145 anam-ro,seongbuk-gu,seoul, South Korea, fuel cell research center,korea institute of science and technology,hwarangno 14-gil 5,seongbuk-gu,seoul, South Korea
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Authors
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