Mass spectroscopy for the anode gas layer in a semi-passive direct methanol fuel cell using porous carbon plate. Part II. Relationship between the reaction products and the methanol and water vapor pressures

Mohd Shahbudin Mastar @ Masdar, Takuya Tsujiguchi, Nobuyoshi Nakagawa

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Subsequent to Part I, in situ mass spectrometry using a capillary probe was conducted in order to evaluate the gas condition of the anode gas layer of a semi-passive direct methanol fuel cell (DMFC) employing a porous carbon plate (PCP). Different types of PCPs were used for the DMFC, and the production of intermediates besides CO2, i.e., methylformate (HCOOCH3), formaldehyde (HCHO) and formic acid (HCOOH), were investigated. The profiles of the vapor pressures of these products were related to the vapor pressure of methanol and water in the gas layer. The production rate of each intermediate was formulated as a power function of the methanol and water vapor pressure ratio, PC H3 OH / PH2 O, with the power factors of 2.07, 0.47 and -0.57 for methylformate, formaldehyde and formic acid, respectively. Based on these equations of the production rates, the product distribution could be quantitatively estimated.

Original languageEnglish
Pages (from-to)618-624
Number of pages7
JournalJournal of Power Sources
Volume194
Issue number2
DOIs
Publication statusPublished - 1 Dec 2009
Externally publishedYes

Fingerprint

formic acid
water pressure
Direct methanol fuel cells (DMFC)
Steam
Vapor pressure
Reaction products
reaction products
Water vapor
vapor pressure
fuel cells
Methanol
water vapor
Anodes
anodes
mass spectroscopy
Carbon
methyl alcohol
Gases
Formic acid
Spectroscopy

Keywords

  • Intermediate products
  • Methanol oxidation
  • Product distribution
  • Production rate
  • Semi-passive DMFC

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

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title = "Mass spectroscopy for the anode gas layer in a semi-passive direct methanol fuel cell using porous carbon plate. Part II. Relationship between the reaction products and the methanol and water vapor pressures",
abstract = "Subsequent to Part I, in situ mass spectrometry using a capillary probe was conducted in order to evaluate the gas condition of the anode gas layer of a semi-passive direct methanol fuel cell (DMFC) employing a porous carbon plate (PCP). Different types of PCPs were used for the DMFC, and the production of intermediates besides CO2, i.e., methylformate (HCOOCH3), formaldehyde (HCHO) and formic acid (HCOOH), were investigated. The profiles of the vapor pressures of these products were related to the vapor pressure of methanol and water in the gas layer. The production rate of each intermediate was formulated as a power function of the methanol and water vapor pressure ratio, PC H3 OH / PH2 O, with the power factors of 2.07, 0.47 and -0.57 for methylformate, formaldehyde and formic acid, respectively. Based on these equations of the production rates, the product distribution could be quantitatively estimated.",
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author = "{Mastar @ Masdar}, {Mohd Shahbudin} and Takuya Tsujiguchi and Nobuyoshi Nakagawa",
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AU - Mastar @ Masdar, Mohd Shahbudin

AU - Tsujiguchi, Takuya

AU - Nakagawa, Nobuyoshi

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Subsequent to Part I, in situ mass spectrometry using a capillary probe was conducted in order to evaluate the gas condition of the anode gas layer of a semi-passive direct methanol fuel cell (DMFC) employing a porous carbon plate (PCP). Different types of PCPs were used for the DMFC, and the production of intermediates besides CO2, i.e., methylformate (HCOOCH3), formaldehyde (HCHO) and formic acid (HCOOH), were investigated. The profiles of the vapor pressures of these products were related to the vapor pressure of methanol and water in the gas layer. The production rate of each intermediate was formulated as a power function of the methanol and water vapor pressure ratio, PC H3 OH / PH2 O, with the power factors of 2.07, 0.47 and -0.57 for methylformate, formaldehyde and formic acid, respectively. Based on these equations of the production rates, the product distribution could be quantitatively estimated.

AB - Subsequent to Part I, in situ mass spectrometry using a capillary probe was conducted in order to evaluate the gas condition of the anode gas layer of a semi-passive direct methanol fuel cell (DMFC) employing a porous carbon plate (PCP). Different types of PCPs were used for the DMFC, and the production of intermediates besides CO2, i.e., methylformate (HCOOCH3), formaldehyde (HCHO) and formic acid (HCOOH), were investigated. The profiles of the vapor pressures of these products were related to the vapor pressure of methanol and water in the gas layer. The production rate of each intermediate was formulated as a power function of the methanol and water vapor pressure ratio, PC H3 OH / PH2 O, with the power factors of 2.07, 0.47 and -0.57 for methylformate, formaldehyde and formic acid, respectively. Based on these equations of the production rates, the product distribution could be quantitatively estimated.

KW - Intermediate products

KW - Methanol oxidation

KW - Product distribution

KW - Production rate

KW - Semi-passive DMFC

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JF - Journal of Power Sources

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