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논문 상세정보

Abstract

A Pt-layer was deposited on the anode side of a Nafion membrane via a sputtering method in order to reduce methanol crossover in a direct methanol fuel cell (DMFC). The methanol permeation and the proton conductivity through the modified membranes were investigated. The performances of the direct methanol fuel cell were also tested using single cells with a Nafion membrane and the modified membranes. The Pt-layers on the membrane blocked both methanol crossover and proton transport through the membranes. Methanol permeability and proton conductivity decreased with an increase of the platinum layer thickness. At methanol concentration of 2 M, the DMFC employing the modified membrane with a platinum layer of 66 nm-thickness showed similar performance to that of a DMFC with a bare Nafion membrane in spite of the lower proton conductivity of the former. The maximum power density of the cell using the modified membrane with a platinum layer of 66 nm-thickness increased slightly while that of the cell with the bare membrane decreased abruptly when a methanol solution of 6M was supplied.

참고문헌 (16)

  1. X. Ren, P. Zelenay, S. Thomas, S. Gottesfeld, and S. Davey, 'Recent Advances in Direct Methanol Fuel Cells at Los Alamos National Laboratory' J Power Sources, 86, 111 (2001) 
  2. C. K. Witham, W. Chun, T. I. Valder, and S. R. Narayaman, 'Performance of Direct Methanol Fuel Cells with Sputter-Deposited Anode Catalyst Layers' Electrochem. Solid-State Lett., 3, 497 (2000) 
  3. N. Jia, M. C. Lefebvre, J. Halfyard, Z. Qi, and P. G. Pickup, 'Modification of Nafion Proton Exchange Membranes to Reduce Methanol Crossover in PEM Fuel Cells' J. Electrochem. Solid-State Lett., 3, 529 (2000) 
  4. D. Jung, S. Cho, D.-H. Peck, D.-R Shin, and J. Kim, 'Preparation and Performance of a $Nafion^{circledR}/Montmorillonite$ Nanocomposite Membrane for Direct Methanol Fuel Cell' J. Power Sources, 118, 205 (2003) 
  5. A. Heinzel and V. M. Barragan, 'A Review of the State-of-the-Art of the Methanol Crossover in Direct Methanol Fuel Cells' J. Power Sources, 84, 70 (1999) 
  6. J. T. Mueller and P. M. Urban, 'Characterization of Direct Methanol Fuel Cells by ac Impedance Spectroscopy' J. Power Sources, 75, 139 (1998) 
  7. Y. Sone, P. Ekdunge, and D. Simonsson, 'Proton Conductivity of Nafion 117 as Measured by a Four-Electrode AC Impedance Method' J. Electrochem. Soc., 143, 1254 (1996) 
  8. S. Y, Cha and W. M. Lee, 'Performance of Proton Exchange Memebrane Fuel Cell Electrodes Prepared by Direct Deposition of Ultra Thin Platinum on the Membrane Surface' J. Electrochem. Soc., 146, 4055 (1999) 
  9. T. A. Zawodizinski, M. Neeman, L. O. Sillerud, and S. Gottesfeld, 'Determination of Water Diffusion Coefficients in Perfluorosulfonate Ionomeric Membranes' J. Phys. Chem., 95, 6040 (1991) 
  10. P. Dimitrova, K. A. Friedrich, U. Stimming, and B. Vogt, 'Modified $Nafion{\circledR}-based$ Membranes for Use in Direct Methanol Fuel Cells' Solid State Ionics, 150, 115 (2002) 
  11. J. S. Wainright, J. T. Wang, D. Weng, R. F. Savinell, and M. Litt, 'Acid-Doped Polybenzimidazoles: A New Polymer Electrolyte' J. Electrochem. Soc., 142, L121 (1995) 
  12. D Jung, E. Jung, D Shin, R. Song, and Y. Rhee, ‚Single Cell Characteristics of Air Breathing DMFC by Pretreatment of Gas Diffusion Layer' J. Kor. Ind. Eng. Chem., 15, 676 (2004) 
  13. K. Scott, W. Taama, P. Argyropoulos, and K. Sundmacher, 'The Impact of Mass Transport and Methanol Crossover on the Direct Methanol Fuel Cell' J Power Sources, 83, 204 (1999) 
  14. Z. Q. Ma, P. Cheng, and T. S. Zhao, 'A Palladium-Alloy Deposited Nafion Membrane for Direct Methanol Fuel Cells' J. Membr. Sci., 215, 327 (2003) 
  15. S. Yoon, G. Hwang, W. Cho, I. Oh, S. Hong, and H. Ha, 'Modification of Polymer Electrolyte Membranes for DMFCs Using Pd Films Formed by Sputtering' J. Power sources, 106, 215 (2002) 
  16. H. Guo and C. F. Ma, '2D Analytical Model of a Direct Methanol Fuel Cell' Electrochem. Comm., 6, 306 (2004) 

이 논문을 인용한 문헌 (1)

  1. 2011. "" 전기화학회지 = Journal of the Korean Electrochemical Society, 14(2): 83~91 

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