인산형 연료 전지에 관한 연구

김조웅; 김영우; 이주성

HWAHAK KONGHAK, Vol.29, No.5, 513-519, October, 1991

Export Citation

인산형 연료 전지에 관한 연구

Behavior of Platinum Particle Growth on Carbon Black for Fuel Cell

김조웅, 김영우, 이주성

초록

Vulcan XC-72 카본블랙을 지지체로 한 위에 염화백금산을 환원시켜 백금을 담지시켰다. 전기화학적 측정방법과 X-선 회절로 표면적 및 입자크기를 관찰하였으며 초기입자의 크기나 백금의 농도, 온도, 전극전위에 따른 입자 크기 성장의 변화를 관찰하였다. 전도성 용액 중에 용해되어 있는 백금이 재석출될 때 양극전위에서 더욱 더 석출이 용이하며 기체분위기, 즉 400℃ 수소, 질소 및 아르곤 등의 분위기에서는 표면적의 감소를 볼 수 없었다. 본 실험에서는 위와 같은 조건에서 카본에 담지된 백금 입자의 성장의 관찰과 그 원인을 고찰하였다.

Pt catalysts supported on Vulcan XC-72 carbon have been prepared with H₂PtCl₆ㆍ6H₂O as metal precursor. Measurements of surface area and crystallite siize by electrochemical method and by X-ray diffrac-tion showed that the supported platinum crystallites grew when in contact with a electroconducting solution. This study shows that the platinum area loss depends on such factors as an initial crystallite size, platinum concentration, temperature and potential of electrode. A soluble platinum in conducting solution was redepos-ited on the electrode surface at cathodic potential, but there was no detectable area losses due to heating in nitrogen, argon or hydrogen at 400℃. In this study we will present the agglomeration phenomena of platinum particles and the reason of growth of platinum particles.

[References]

Untereker DF, Bruckenstein S, J. Electrochem. Soc., 21, 360 (1974)
Connolly JF, Flannery RJ, Meyers BL, J. Electrochem. Soc., 114, 41 (1967)
Kenjo T, Shimizu H, Denki Kagaku, 56, 195 (1988)
Bett JAS, Kinoshita K, Stonehart P, J. Catal., 41, 124 (1976)
Blurton KF, Kunz HR, Rutt DR, Electrochim. Acta, 23, 183 (1978)
Mcbreen J, Olender H, Srinivasan S, J. Appl. Electrochem., 11, 787 (1981)
Watanabe M, Sei H, Stonehart P, J. Electroanal. Chem., 261, 375 (1989)
Guerreroruiz A, J. Catal., 99, 171 (1986)
Hyde PJ, Maggiore CJ, Srinivasan S, J. Electroanal. Chem., 168, 383 (1984)
Maoka T, Electrochim. Acta, 383, 379 (1988)
Stonehart P, Int. J. Hydrog. Energy, 9, 921 (1984)
Honji A, Mori T, Hishinuma Y, Denko Kagaku, 57, 48 (1989)
Hillenbrand LJ, Lacksonen JW, J. Electrochem. Soc., 112, 249 (1965)
Honji A, Mori T, Tamura K, J. Electrochem. Soc., 135, 355 (1988)
Brummer SB, Ford JI, Turner MJ, J. Phys. Chem., 69, 3424 (1965)
Gileadi E, Kirowa E, Penciner J, Interfacial Electrochem., 432 (1975)
Kim YW, Park JI, Lee JS, Meter. Fin. Soc. Korean, 22, 55 (1989)
Park JI, Yoo DY, Lee JS, HWAHAK KONGHAK, 28(4), 395 (1990)
Lee JS, Yoon SY, Kim DH, Studies on the Fuel Cell, Contract-KOSEF 86-0174, Korea Science and Engineering Foundation (1989)
Othmer K, Encyclopedia of Chemical Technology (3 edition), 4, 631 (1978)

[Referenced By]

[1] Untereker DF, Bruckenstein S, J. Electrochem. Soc., 21, 360 (1974)

[2] Connolly JF, Flannery RJ, Meyers BL, J. Electrochem. Soc., 114, 41 (1967)

[3] Kenjo T, Shimizu H, Denki Kagaku, 56, 195 (1988)

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

[5] Blurton KF, Kunz HR, Rutt DR, Electrochim. Acta, 23, 183 (1978)

[6] Mcbreen J, Olender H, Srinivasan S, J. Appl. Electrochem., 11, 787 (1981)

[7] Watanabe M, Sei H, Stonehart P, J. Electroanal. Chem., 261, 375 (1989)

[8] Guerreroruiz A, J. Catal., 99, 171 (1986)

[9] Hyde PJ, Maggiore CJ, Srinivasan S, J. Electroanal. Chem., 168, 383 (1984)

[10] Maoka T, Electrochim. Acta, 383, 379 (1988)

[11] Stonehart P, Int. J. Hydrog. Energy, 9, 921 (1984)

[12] Honji A, Mori T, Hishinuma Y, Denko Kagaku, 57, 48 (1989)

[13] Hillenbrand LJ, Lacksonen JW, J. Electrochem. Soc., 112, 249 (1965)

[14] Honji A, Mori T, Tamura K, J. Electrochem. Soc., 135, 355 (1988)

[15] Brummer SB, Ford JI, Turner MJ, J. Phys. Chem., 69, 3424 (1965)

[16] Gileadi E, Kirowa E, Penciner J, Interfacial Electrochem., 432 (1975)

[17] Kim YW, Park JI, Lee JS, Meter. Fin. Soc. Korean, 22, 55 (1989)

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

[19] Lee JS, Yoon SY, Kim DH, Studies on the Fuel Cell, Contract-KOSEF 86-0174, Korea Science and Engineering Foundation (1989)

[20] Othmer K, Encyclopedia of Chemical Technology (3 edition), 4, 631 (1978)