용융탄산염 연료전지의 Ni-Al<sub>2</sub>O<sub>3</sub> Anode 전극개발에 관한 연구

김혁; 남석우; 홍성안; 정종식

HWAHAK KONGHAK, Vol.36, No.6, 856-862, December, 1998

Export Citation

용융탄산염 연료전지의 Ni-Al₂O₃ Anode 전극개발에 관한 연구

Development of Ni-Al₂O₃ Anodes for Molten Carbonate Fuel Cell

김혁, 남석우, 홍성안, 정종식

초록

용융탄산염 연료전지의 수소전극(anode)의 소결과 creep을 해결하기 위하여, creep 저항성이 큰 것으로 알려진 Al₂O₃에 Ni을 담지하여 anode를 제조하였다. 전극의 분석은 SEM, XRD, 4-point probe method, creep test 및 half cell text에 의해 수행되었다. Ni전극에 첨가된 Al₂O₃는 creep저항성을 향상시켜 주었으며, 담지법으로 제조된 Ni-Ni/A1₂O₃ anode는 높은 전기전도도와 전극 성능을 나타내어, 새로운 담지법에 의한 Al₂O₃ 첨가 Ni전극의 대체전극으로의 가능성을 확인할 수 있었다. 반면 Cu는 우수한 전기전도성에도 불구하고, 담지시에는 낮은 반응성을 나타냈다.

A1₂O₃ known for creep resistant material was doped with Ni by newly developed impregnation method. The nickel-doped Al₂O₃(Ni/Al₂O₃) powder which was mixed with Ni powder was used for the preparation of anodes(designated as Ni-Ni/ Al₂O₃). The prepared anodes were characterized by means of SEM, XRD, and creep test. Anode performance tests were carried out by potentiodynamic polarization technique using a MCFC half cell. With an increase of Ni impregnation, electric conductivity of the Ni-Ni/Al₂O₃ anode was increased and the existence of Al₂O₃ improved creep resistance. In the half cell test, Ni-Ni/A1₂O₃ showed a good performance comparable to 100 % pure Ni anode. Anodes made of Cu-im-pregnated Ni-Cu/Al₂O₃, powder showed both lower electric conductivity and activity performance compared with those of Ni-Ni/Al₂O₃.

Keywords:Molten Carbonate Fuel Cell;Ni-Al₂O₃ Anodes;Creep;Electric Conductivity

[References]

Oh IH, Yoon SP, Lim TM, Nam SW, Hong SA, Lim HC, Denki Kagaku, 64(6), 497 (1996)
Oh IH, Yoon SP, Lim TH, Nam SW, Hong SA, HWAHAK KONGHAK, 35(2), 255 (1997)
Iacovangelo CD, Proceedings of Symposium on Molten Carbonate Fuel Cell Technology, 372 (1984)
Lessing PA, Miller GR, Yamada H, J. Electrochem. Soc., 133, 1538 (1986)
Johnson DL, EPRI, EM-624 Project 371-1 (1978)
Iacovangelo CD, J. Electrochem. Soc., 133, 410 (1986)
Iacovangelo CD, J. Electrochem. Soc., 133, 280 (1986)
Tackeuchi M, Okada H, 1990 Fuel Cell Seminar, Coutesy Associates, Phoenix, Arizona, 231 (1990)
Okada H, Iwase Y, Takeuchi M, Nishimura S, Denki Kagaku, 9, 785 (1992)
Yamamasu Y, Proceedings of the International Fuel Cell Conference, NEDO, Makuhari, Japan, 161 (1992)
Plomp L, 1990 Fuel Cell Seminar, Coutesy Associates, Phoenix, Arizona, 310 (1990)
Ong ET, 1990 Fuel Cell Seminar, Coutesy Associates, Phoenix, Arizona, 314 (1990)
Hoshino K, Okada H, "Proceedings of the International Fuel Cell Conference, NEDO, Makuhari, Japan, 169 (1992)

[Referenced By]

[1] Oh IH, Yoon SP, Lim TM, Nam SW, Hong SA, Lim HC, Denki Kagaku, 64(6), 497 (1996)

[2] Oh IH, Yoon SP, Lim TH, Nam SW, Hong SA, HWAHAK KONGHAK, 35(2), 255 (1997)

[3] Iacovangelo CD, Proceedings of Symposium on Molten Carbonate Fuel Cell Technology, 372 (1984)

[4] Lessing PA, Miller GR, Yamada H, J. Electrochem. Soc., 133, 1538 (1986)

[5] Johnson DL, EPRI, EM-624 Project 371-1 (1978)

[6] Iacovangelo CD, J. Electrochem. Soc., 133, 410 (1986)

[7] Iacovangelo CD, J. Electrochem. Soc., 133, 280 (1986)

[8] Tackeuchi M, Okada H, 1990 Fuel Cell Seminar, Coutesy Associates, Phoenix, Arizona, 231 (1990)

[9] Okada H, Iwase Y, Takeuchi M, Nishimura S, Denki Kagaku, 9, 785 (1992)

[10] Yamamasu Y, Proceedings of the International Fuel Cell Conference, NEDO, Makuhari, Japan, 161 (1992)

[11] Plomp L, 1990 Fuel Cell Seminar, Coutesy Associates, Phoenix, Arizona, 310 (1990)

[12] Ong ET, 1990 Fuel Cell Seminar, Coutesy Associates, Phoenix, Arizona, 314 (1990)

[13] Hoshino K, Okada H, "Proceedings of the International Fuel Cell Conference, NEDO, Makuhari, Japan, 169 (1992)