메탄올 환원법에 의한 연료전지용 백금담지 전극제조-촉매담지시 계면활성제 첨가와 열처리 온도 효과-

정윤이; 유덕영; 은영찬; 이주성

Journal of the Korean Industrial and Engineering Chemistry, Vol.8, No.1, 16-22, February, 1997

Preparation of Fuel Cell Electrode Impregnated Platinum by Methanol Reduction Method-Effect of Surfactant and Heat Treatment at Pt Impregnation-

정윤이, 유덕영, 은영찬, 이주성

초록

메탄올에 의해 백금을 환원시켜 carbon상에 담지할 때 계면활성제의 첨가가 환원된 백금 colloid의 안정화에 큰 영향을 미치며 계면활성제의 첨가량이 증가할수록 백금 colloid의 안정성이 증가하여 백금을 미립화하여 carbon상에 담지할 수 있었다. 그러나 계면활성제의 양이 증가할수록 열처리 후 잔존하는 계면활성제 잔유물이 전극 내에서 불순물로 작용하여 산소환원 성능은 감소하였다. 계면활성제 제거를 위해 열처리 온도를 증가시킬수록 백금의 응집현상이 크게 증가하여 백금의 입자 크기가 증가하여 전류밀도는 감소하였다.

When platinum wan impregnated on carbon by methanol, surfactant have an important effect on the stability of platinum colloid. As the increase of amounts of surfactant enhanced the stability of platinum colloid, the particle size of platinum on carbon was diminished. But, after heat treatment, residue of surfactant remained in electrode to decrease current density of oxygen reduction. To remove surfactant, as temperature of heat treatment enhanced, platinum particle was aggromerated and current density was decreased.

[References]

Jalan VM, U.S. Patent, 4,136,059 (1979)
Luczak FJ, Landsman DA, U.S. Patent, 4,677,092 (1987)
Peuckert M, Yoneda T, Dalla RA, Boudart M, J. Electrochem. Soc., 133, 5 (1986)
Kim YW, Lee JS, J. Korean Ind. Eng. Chem., 4(3), 522 (1993)
Kinoshita K, "Carbon," John & Wiley Sons, NY, 391 (1988)
Honji A, Mori T, Hishnuma Y, J. Electrochem. Soc., 137, 2084 (1990)
Honji A, Takeuchi S, Mori T, Hisunuma Y, J. Electrochem. Soc., 136, 3701 (1989)
Hirai H, Nakao Y, Toshima N, J. Macromol. Sci.-Chem., A12, 1117 (1978)
Svedberg T, Die Methoden zur Herstellung Kolloder Losungen Anorganisher Steffen, Theodor Steinkopff, Dresden (1909)
Bond G, Platinum Met. Rev., 19, 873 (1970)
Boutonnet M, Kizling J, Stenius P, Colloids Surf., 5, 209 (1982)
Ladd MFC, Palmer RA, "Structure Determination by X-ray Crystallography," Plenum, New York and London, 134 (1993)
West AR, "Solid State Chemistry and its Application," John & Wiley Sons, NY, 174 (1989)
Bett J, Lundquist JT, Washington E, Stonehart P, Electrochim. Acta, 18, 343 (1973)

[Referenced By]

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

[2] Luczak FJ, Landsman DA, U.S. Patent, 4,677,092 (1987)

[3] Peuckert M, Yoneda T, Dalla RA, Boudart M, J. Electrochem. Soc., 133, 5 (1986)

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

[5] Kinoshita K, "Carbon," John & Wiley Sons, NY, 391 (1988)

[6] Honji A, Mori T, Hishnuma Y, J. Electrochem. Soc., 137, 2084 (1990)

[7] Honji A, Takeuchi S, Mori T, Hisunuma Y, J. Electrochem. Soc., 136, 3701 (1989)

[8] Hirai H, Nakao Y, Toshima N, J. Macromol. Sci.-Chem., A12, 1117 (1978)

[9] Svedberg T, Die Methoden zur Herstellung Kolloder Losungen Anorganisher Steffen, Theodor Steinkopff, Dresden (1909)

[10] Bond G, Platinum Met. Rev., 19, 873 (1970)

[11] Boutonnet M, Kizling J, Stenius P, Colloids Surf., 5, 209 (1982)

[12] Ladd MFC, Palmer RA, "Structure Determination by X-ray Crystallography," Plenum, New York and London, 134 (1993)

[13] West AR, "Solid State Chemistry and its Application," John & Wiley Sons, NY, 174 (1989)

[14] Bett J, Lundquist JT, Washington E, Stonehart P, Electrochim. Acta, 18, 343 (1973)