PAFC용 합금 촉매 제조

김영우; 이주성

Journal of the Korean Industrial and Engineering Chemistry, Vol.4, No.4, 692-700, December, 1993

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PAFC용 합금 촉매 제조

Manufacture of Pt-transition Metal Alloy Catalyst for PAFC

김영우, 이주성

초록

카본 담체에 백금과 전이금속과의 합금 촉매를 제조하여 촉매의 부식성, 촉매능 및 단전지에서의 전극성능을 전기화학적으로 비교 검토하였다. 그리고 합금촉매의 분석은 XRD로 확인하였다. 본 연구에서 제조된 여러 가지 백금 합금 촉매 중 Pt-Mo/carbon, Pt-Fe-Co/carbon 및 Pt-Fe/carbon 촉매가 보다 우수한 산소 환원 전류밀도를 나타내었으나 Pt-Mo/carbon 촉매의 경우 초기 전극전류의 대부분이 촉매의 부식에 의한 전류임을 확인할 수 있었다. Pt/carbon촉매를 사용하였을 경우 나타난 전극의 전류밀도는 120mA/㎝²이었으나 Pt-Fe-Co/carbon 의 경우는 200mA/㎝²으로 순수 백금촉매보다 우수한 전극성능을 나타내었다.

Corrosivities and catalytic activities of platinum-transition metal alloy catalyses loaded on carbon substrate and were studied by electrochemical method using a unit cell. And the analysis of Pt-alloy catalyst was conducted by x-ray diffractometer. Among the catalysts, the Pt-Mo/carbon, Pt-Fe-Co/carbon and Pt-Fe/carbon catalyst showed more excellent cathodic current densities than others. It was found that most of cathodic current density for the Pt-Mo/carbon electrode was 120mA/㎝². The current density of the Pt-Fe-Co/carbon was much higher than that of Pt/carbon, reaching 200mA/cm².

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[1] Linden D, "Handbook of Batteries and Fuel Cells," D. Linden (ed.), 43-6, McGraw-Hill Book, Company, New York (1984)

[2] Iczkowski RP, Cutlip MB, J. Electrochem. Soc., 127, 1433 (1980)

[3] Gruver GA, Pascoe RF, Kunz HK, J. Electrochem. Soc., 127, 1219 (1980)

[4] Connoly JF, Flannery RJ, Meyers BL, J. Electrochem. Soc., 114, 241 (1967)

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

[6] Lansman et al., U.S. Patent, 4,316,944 (1982)

[7] Luczak FJ, Landsman DA, U.S. Patent, 4,447,506 (1984)

[8] Luczak FJ, U.S. Patent, 4,677,092 (1986)

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

[10] Beard BC, Ross PN, J. Electrochem. Soc., 133, 839 (1986)

[11] Paffett MT, Daube KA, Campbell CT, J. Electroanal. Chem., 220, 269 (1987)

[12] Gottesfeld S, Paffett MT, Redondo A, J. Electroanal. Chem., 205, 163 (1986)

[13] Jalan V, Taylor EJ, J. Electrochem. Soc., 130, 2299 (1983)

[14] Park JI, Yoo DY, Lee JS, HWAHAK KONGHAK, 28(4), 395 (1990)

[15] Park JI, Kim JW, Lee JS, J. Korean Ind. Eng. Chem., 1(2), 224 (1990)

[16] Kim JW, Kim YW, Lee JS, HWAHAK KONGHAK, 29(5), 513 (1991)

[17] Kim JW, Kim YW, Lee JS, J. Korean Inst. Surf. Eng., 24, 162 (1991)