Development of Electrode Structure via Loading Pt Catalysts on PTFE/C Powder by Colloidal Method in PAFC

Jae-Cheol Shim; Hyung-Ryul Rim; Duck-Young Yoo; Jung-Il Park; Jo-Woong Kim; Ju-Seong Lee

Journal of Industrial and Engineering Chemistry, Vol.6, No.2, 79-84, March, 2000

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Development of Electrode Structure via Loading Pt Catalysts on PTFE/C Powder by Colloidal Method in PAFC

Jae-Cheol Shim^†, Hyung-Ryul Rim, Duck-Young Yoo, Jung-Il Park¹, Jo-Woong Kim¹, and Ju-Seong Lee

Department of Industrial Chemistry, Hanyang University, Seoul 133-791, Korea
¹Inorganic and Surface Chemistry, Agency for Technology and Standards, Kwacheon 427-010, Korea

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Inside electrodes fabricated by a conventional method, inactive catalysts exist because catalysts were covered with polytetrafluoroethylene (PTFE). To reduce the inactive catalysts and develop a better electrode structure, the procedure of mixing the materials was changed. To begin with, PTFE/C powder was manufactured. Pt catalysts were then loaded on the PTFE/C powder. For loading the Pt catalysts on carbon blacks, a colloidal method was used. The porosities, pore areas, and performances of the electrodes were examined by a porosimeter and an electrochemical measurement apparatus. The electrodes fabricated by the new method were superior to those fabricated by the conventional method. In particular, the performance of the former, was 390 mA/cm² at 0.7 V (vs. RHE) compared with that of the latter of 250 mA/cm² at 0.7 V (vs. RHE)

Keywords:PAFC;Pt catalysts;electrode structure;PTFE/C;colloidal method

[References]

Kordesch K, Simader G, Fuel Cells and Their Applications, Weinheim, New York (1996)
Appleby AJ, Foulkes FR, Fuel Cell Handbook, Van Nostrand Reinhold, New York, NY (1989)
Schultze JW, Lohrengel M, Ross D, Stimmig U, Chem. Ing. Tech., 52, 447 (1980)
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Jalan VM, U.S. Patent, 4,186,110 (1977)
Hirai H, J. Macromol. Sci.-Chem., A12, 1117 (1978)
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Sattler ML, Ross PN, Ultramicroscopy, 20, 21 (1986)
Peuckert M, Yoneda T, Dalla Betta RA, Boudart M, J. Electrochem. Soc., 133, 944 (1986)
Maoka T, Electrochim. Acta, 33, 371 (1988)
Watanabe M, Sei H, Stonehart P, J. Electrochem. Soc., 261, 375 (1989)
Kinoshita K, J. Electrochem. Soc., 137, 845 (1990)
Kim YW, Lee JS, J. Korean Ind. Eng. Chem., 4(3), 522 (1993)
Jung EE, Yoo DY, Eun YC, Lee JS, J. Korean Ind. Eng. Chem., 8(1), 16 (1997)
Watanebe M, Tomikawa M, Motoo S, J. Electroanal. Chem., 195, 81 (1985)
Chin DT, Chang HH, J. Appl. Electrochem., 19, 95 (1989)
Shim JC, Lee KJ, Lee JS, J. Korean Ind. Eng. Chem., 9(4), 486 (1998)
Shim JC, Lee JS, Mater. Chem. Phys., 63, 133 (2000)

[Referenced By]

[1] Kordesch K, Simader G, Fuel Cells and Their Applications, Weinheim, New York (1996)

[2] Appleby AJ, Foulkes FR, Fuel Cell Handbook, Van Nostrand Reinhold, New York, NY (1989)

[3] Schultze JW, Lohrengel M, Ross D, Stimmig U, Chem. Ing. Tech., 52, 447 (1980)

[4] Jalan VM, U.S. Patent, 4,136,059 (1979)

[5] Jalan VM, U.S. Patent, 4,186,110 (1977)

[6] Hirai H, J. Macromol. Sci.-Chem., A12, 1117 (1978)

[7] Aika K, J. Res. Inst. Catali., Hokkido Univ., 24, 54 (1976)

[8] Bett JAS, Kinoshita K, Stonehart P, J. Catal., 41, 124 (1976)

[9] Bond GC, Surf. Sci., 56, 966 (1985)

[10] Sattler ML, Ross PN, Ultramicroscopy, 20, 21 (1986)

[11] Peuckert M, Yoneda T, Dalla Betta RA, Boudart M, J. Electrochem. Soc., 133, 944 (1986)

[12] Maoka T, Electrochim. Acta, 33, 371 (1988)

[13] Watanabe M, Sei H, Stonehart P, J. Electrochem. Soc., 261, 375 (1989)

[14] Kinoshita K, J. Electrochem. Soc., 137, 845 (1990)

[15] Kim YW, Lee JS, J. Korean Ind. Eng. Chem., 4(3), 522 (1993)

[16] Jung EE, Yoo DY, Eun YC, Lee JS, J. Korean Ind. Eng. Chem., 8(1), 16 (1997)

[17] Watanebe M, Tomikawa M, Motoo S, J. Electroanal. Chem., 195, 81 (1985)

[18] Chin DT, Chang HH, J. Appl. Electrochem., 19, 95 (1989)

[19] Shim JC, Lee KJ, Lee JS, J. Korean Ind. Eng. Chem., 9(4), 486 (1998)

[20] Shim JC, Lee JS, Mater. Chem. Phys., 63, 133 (2000)