Colorimetric detection of phosphoric acid leaking for phosphoric acid-doped polybenzimidazole membrane fuel cells via molybdenum blue reaction

Title
Colorimetric detection of phosphoric acid leaking for phosphoric acid-doped polybenzimidazole membrane fuel cells via molybdenum blue reaction
Authors
정연훈정주해Euiji ChoiSeungyoon HanAlina Irene Begley유성종장종현김형준남석우이관영김진영
Keywords
Molybdenum blue method; Phosphoric acid leakage; Phosphoric acid-doped polybenzimidazole; membrane; High temperature proton exchange; membrane fuel cells
Issue Date
2015-12
Publisher
Journal of power sources
Citation
VOL 299, 480-484
Abstract
A simple and precise colorimetric method for analyzing phosphoric acid leakage in phosphoric aciddoped polybenzimidazole membrane fuel cells is described. The developed method is based on the colorimetric determination from a rapid formation of molybdenum blue color by the reduction reaction of molybdate ions in the presence of phosphoric acid in the acidic medium. The color is stable up to a few months and can be used for the sensitive and accurate detection of phosphoric acid electrolyte which is discharged from the fuel cell during operation. Tests with a wide concentration range of phosphate compounds showed that it permits determination of phosphoric acid up to nanogram quantities. The developed detection method assists monitoring the phosphoric acid contents and developing stable operation strategies of fuel cells.
URI
http://pubs.kist.re.kr/handle/201004/50966
ISSN
03787753
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE