Development and characterization of a silicon-based micro direct methanol fuel cell

G. Q. Lu, Chao-yang Wang, T. J. Yen, X. Zhang

Research output: Contribution to journalArticle

249 Citations (Scopus)

Abstract

A silicon-based micro direct methanol fuel cell (μDMFC) for portable applications has been developed and its electrochemical characterization carried out in this study. Anode and cathode flowfields with channel and rib width of 750 μm and channel depth of 400 μm were fabricated on Si wafers using the microelectromechanical system (MEMS) technology. A membrane-electrode assembly (MEA) was specially fabricated to mitigate methanol crossover. This MEA features a modified anode backing structure in which a compact microporous layer is added to create an additional barrier to methanol transport thereby reducing the rate of methanol crossing over the polymer membrane. The cell with the active area of 1.625 cm2 was assembled by sandwiching the MEA between two micro-fabricated Si wafers. Extensive cell polarization testing demonstrated a maximum power density of 50 mW/cm2 using 2 M methanol feed at 60°C. When the cell was operated at room temperature, the maximum power density was shown to be about 16 mW/cm2 with both 2 and 4 M methanol feed. It was further found that the present μDMFC still produced reasonable performance under 8M methanol solution at room temperature.

Original languageEnglish (US)
Pages (from-to)821-828
Number of pages8
JournalElectrochimica Acta
Volume49
Issue number5
DOIs
StatePublished - Feb 25 2004

Fingerprint

Direct methanol fuel cells (DMFC)
Silicon
Methanol
Membranes
Electrodes
Anodes
MEMS
Polymers
Cathodes
Polarization
Temperature
Testing

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Lu, G. Q. ; Wang, Chao-yang ; Yen, T. J. ; Zhang, X. / Development and characterization of a silicon-based micro direct methanol fuel cell. In: Electrochimica Acta. 2004 ; Vol. 49, No. 5. pp. 821-828.
@article{229122813c22492798db5f79a5f8508e,
title = "Development and characterization of a silicon-based micro direct methanol fuel cell",
abstract = "A silicon-based micro direct methanol fuel cell (μDMFC) for portable applications has been developed and its electrochemical characterization carried out in this study. Anode and cathode flowfields with channel and rib width of 750 μm and channel depth of 400 μm were fabricated on Si wafers using the microelectromechanical system (MEMS) technology. A membrane-electrode assembly (MEA) was specially fabricated to mitigate methanol crossover. This MEA features a modified anode backing structure in which a compact microporous layer is added to create an additional barrier to methanol transport thereby reducing the rate of methanol crossing over the polymer membrane. The cell with the active area of 1.625 cm2 was assembled by sandwiching the MEA between two micro-fabricated Si wafers. Extensive cell polarization testing demonstrated a maximum power density of 50 mW/cm2 using 2 M methanol feed at 60°C. When the cell was operated at room temperature, the maximum power density was shown to be about 16 mW/cm2 with both 2 and 4 M methanol feed. It was further found that the present μDMFC still produced reasonable performance under 8M methanol solution at room temperature.",
author = "Lu, {G. Q.} and Chao-yang Wang and Yen, {T. J.} and X. Zhang",
year = "2004",
month = "2",
day = "25",
doi = "10.1016/j.electacta.2003.09.036",
language = "English (US)",
volume = "49",
pages = "821--828",
journal = "Electrochimica Acta",
issn = "0013-4686",
publisher = "Elsevier Limited",
number = "5",

}

Development and characterization of a silicon-based micro direct methanol fuel cell. / Lu, G. Q.; Wang, Chao-yang; Yen, T. J.; Zhang, X.

In: Electrochimica Acta, Vol. 49, No. 5, 25.02.2004, p. 821-828.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Development and characterization of a silicon-based micro direct methanol fuel cell

AU - Lu, G. Q.

AU - Wang, Chao-yang

AU - Yen, T. J.

AU - Zhang, X.

PY - 2004/2/25

Y1 - 2004/2/25

N2 - A silicon-based micro direct methanol fuel cell (μDMFC) for portable applications has been developed and its electrochemical characterization carried out in this study. Anode and cathode flowfields with channel and rib width of 750 μm and channel depth of 400 μm were fabricated on Si wafers using the microelectromechanical system (MEMS) technology. A membrane-electrode assembly (MEA) was specially fabricated to mitigate methanol crossover. This MEA features a modified anode backing structure in which a compact microporous layer is added to create an additional barrier to methanol transport thereby reducing the rate of methanol crossing over the polymer membrane. The cell with the active area of 1.625 cm2 was assembled by sandwiching the MEA between two micro-fabricated Si wafers. Extensive cell polarization testing demonstrated a maximum power density of 50 mW/cm2 using 2 M methanol feed at 60°C. When the cell was operated at room temperature, the maximum power density was shown to be about 16 mW/cm2 with both 2 and 4 M methanol feed. It was further found that the present μDMFC still produced reasonable performance under 8M methanol solution at room temperature.

AB - A silicon-based micro direct methanol fuel cell (μDMFC) for portable applications has been developed and its electrochemical characterization carried out in this study. Anode and cathode flowfields with channel and rib width of 750 μm and channel depth of 400 μm were fabricated on Si wafers using the microelectromechanical system (MEMS) technology. A membrane-electrode assembly (MEA) was specially fabricated to mitigate methanol crossover. This MEA features a modified anode backing structure in which a compact microporous layer is added to create an additional barrier to methanol transport thereby reducing the rate of methanol crossing over the polymer membrane. The cell with the active area of 1.625 cm2 was assembled by sandwiching the MEA between two micro-fabricated Si wafers. Extensive cell polarization testing demonstrated a maximum power density of 50 mW/cm2 using 2 M methanol feed at 60°C. When the cell was operated at room temperature, the maximum power density was shown to be about 16 mW/cm2 with both 2 and 4 M methanol feed. It was further found that the present μDMFC still produced reasonable performance under 8M methanol solution at room temperature.

UR - http://www.scopus.com/inward/record.url?scp=0347355055&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0347355055&partnerID=8YFLogxK

U2 - 10.1016/j.electacta.2003.09.036

DO - 10.1016/j.electacta.2003.09.036

M3 - Article

AN - SCOPUS:0347355055

VL - 49

SP - 821

EP - 828

JO - Electrochimica Acta

JF - Electrochimica Acta

SN - 0013-4686

IS - 5

ER -