Colorimetric determination of phosphoric acid leakage for phosphoric acid-doped polybenzimidazole membrane fuel cell applications

Yeon Hun Jeong, Ju Hae Jung, Euiji Choi, Seungyoon Han, Alina Irene Begley, Sung Jong Yoo, Jong Hyun Jang, Hyoung Juhn Kim, SukWoo Nam, Kwan Young Lee, Jin Young Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A simple and precise colorimetric method for analyzing phosphoric acid leakage in phosphoric acid-doped 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.

Original languageEnglish
Pages (from-to)480-484
Number of pages5
JournalJournal of Power Sources
Volume299
DOIs
Publication statusPublished - 2015 Dec 20

Fingerprint

polybenzimidazole
phosphoric acid
Phosphoric acid
fuel cells
Fuel cells
leakage
membranes
Membranes
Color
color
molybdates
Electrolytes
Molybdenum
molybdenum
phosphates
Phosphates
electrolytes
Monitoring
Ions

Keywords

  • High temperature proton exchange membrane fuel cells
  • Molybdenum blue method
  • Phosphoric acid leakage
  • Phosphoric acid-doped polybenzimidazole membrane

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Physical and Theoretical Chemistry

Cite this

Colorimetric determination of phosphoric acid leakage for phosphoric acid-doped polybenzimidazole membrane fuel cell applications. / Jeong, Yeon Hun; Jung, Ju Hae; Choi, Euiji; Han, Seungyoon; Begley, Alina Irene; Yoo, Sung Jong; Jang, Jong Hyun; Kim, Hyoung Juhn; Nam, SukWoo; Lee, Kwan Young; Kim, Jin Young.

In: Journal of Power Sources, Vol. 299, 20.12.2015, p. 480-484.

Research output: Contribution to journalArticle

Jeong, Yeon Hun ; Jung, Ju Hae ; Choi, Euiji ; Han, Seungyoon ; Begley, Alina Irene ; Yoo, Sung Jong ; Jang, Jong Hyun ; Kim, Hyoung Juhn ; Nam, SukWoo ; Lee, Kwan Young ; Kim, Jin Young. / Colorimetric determination of phosphoric acid leakage for phosphoric acid-doped polybenzimidazole membrane fuel cell applications. In: Journal of Power Sources. 2015 ; Vol. 299. pp. 480-484.
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abstract = "A simple and precise colorimetric method for analyzing phosphoric acid leakage in phosphoric acid-doped 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.",
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AU - Jeong, Yeon Hun

AU - Jung, Ju Hae

AU - Choi, Euiji

AU - Han, Seungyoon

AU - Begley, Alina Irene

AU - Yoo, Sung Jong

AU - Jang, Jong Hyun

AU - Kim, Hyoung Juhn

AU - Nam, SukWoo

AU - Lee, Kwan Young

AU - Kim, Jin Young

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N2 - A simple and precise colorimetric method for analyzing phosphoric acid leakage in phosphoric acid-doped 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.

AB - A simple and precise colorimetric method for analyzing phosphoric acid leakage in phosphoric acid-doped 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.

KW - High temperature proton exchange membrane fuel cells

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KW - Phosphoric acid leakage

KW - Phosphoric acid-doped polybenzimidazole membrane

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