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Search / Korean Journal of Chemical Engineering
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Korean Chemical Engineering Research, Vol.46, No.6, 1142-1147, 2008
MgO를 이용한 다공성 탄소 섬유 제조 및 이를 이용한 연료전지용 촉매 특성
Preparation of Porous Carbon Fiber by Using MgO Powder and Its Characteristics of Catalysts for Fuel Cell
Nano-MgO와 메조페이스 피치로부터 복합 탄소섬유를 만들고 MgO를 제거함으로써 직접 메탄올 연료전지용 촉매담지체로서의 다공성 탄소섬유를 제조하였다. 이 다공성 탄소섬유의 비표면적은 8~58 cm2/g이고, 표면기공구조는 마이크로기공이 거의 없이 MgO 입자크기 유래의 메조기공(10~15 nm)으로 구성된 것이 특징이며, MgO 혼입량(1~10 wt%)에 따라 조절할 수 있었다. 본 다공성 탄소섬유를 담지체로 이용하여 함침법으로 60 wt% Pt-Ru 촉매를 담지하였으며, 제조된 Pt-Ru 촉매의 메탄올 산화 특성 및 단위전지 성능 측정 결과 상용촉매에 비하여 5~10% 이상 향상된 값을 나타내었다.
Nano-structured porous carbon fiber(PCF) for the catalyst supports of the direct methanol fuel cell
(DMFC) were prepared from the mesophase pitch by using the nano-MgO powders. Specific surface area of the PCFs was 8~58 m2/g and surface pore structures had almost meso pore diameter of 10~20 nm which were depending on the amount of MgO spheres. Aqueous reduction method was used to load 60 wt% PtRu on the prepared PCF supports. The electro-oxidation activity and single cell performance of the 60 wt% Pt-Ru catalysts were measured by cyclic voltammetry and unit cell test. The performances of these catalysts increased by 5~10% compared with one of commercial catalyst.
[References]
- Joo SH, Choi SJ, Oh IW, Kwak JH, Liu Z, Terasaki O, Ryoo R, Nature, 412, 169, 2001
- Han SJ, Sohn KN, Hyeon TH, Chem. Mater., 12, 3337, 2000
- Hong EH, Jung YH, Lee KH, Korean J. Chem. Eng., 17(2), 237, 2000
- Yim KS, Eom SY, Ryu SK, Edie DD, HWAHAK KONGHAK, 41(4), 503, 2003
- Lim SY, Hong SH, Qiao W, Duayne Whitehurst D, Yoon SH, Mochida I, An B, Yokogawa K, Carbon, 45, 173, 2007
- Cho TH, Kim SY, Cho KH, Ryu SK, HWAHAK KONGHAK, 38(3), 338, 2000
- Ryu SK, Eom SY, Yim KS, EdieDan D, Korean Chem. Eng. Res., 42(3), 288, 2004
- Basova YV, Edie DD, Badheka PY, Bellam HC, Carbon, 43, 1533, 2005
- Hyeon TH, Han SJ, Sung YE, Park KW, Kim YW, Angewandte Chemie-International Edition, 42, 4352, 2003
- Jung DH, Jung JH, Hong SH, Peck DH, Shin DR, Kim ES, Carbon Science, 4, 121, 2003
- Park GG, Yang TH, Yoon YG, Lee WY, Kim CS, International Journal of Hydrogen Energy, 28, 645, 2003
- Lee JB, Park YK, Yang OB, Kang Y, Jun KW, Lee YJ, Kim HY, Lee KH, Choi WC, J. Power Sources, 158(2), 1251, 2006
- Liu HS, Song CJ, Zhang L, Zhang JJ, Wang HJ, Wilkinson DP, J. Power Sources, 155(2), 95, 2006
- Mora E, Blanco C, Prada V, Santamaria R, Granda M, Menendez R, Carbon, 40, 2719, 2002
- Edie DD, Dunham MG, Carbon, 27, 647, 1989
- Nam KD, Kim TJ, Kim SK, Lee BR, Peck DH, Ryu SK, Jung DH, J. Korean Ind. Eng. Chem., 17(2), 223, 2006
- Korai Y, Ishida S, Watanabe F, Yoon SH, Wang YG, Mochida I, Kato I, Nakamura T, Sakai Y, Komatsu M, Carbon, 35, 1733, 1997
- Ryu SK, Eom SY, Cho TH, Edie DD, Carbon Science, 4, 168, 2003
- Gergg SJ, Sing KSW, Adsorption, Surface Area and Porosity, 2nd ed., Academic Press Inc., New York, NY(1982)
- Sing KSW, Everett DH, Haul RAW, Moscou L, Pierotti RA, Rouquerol J, Siemieniewska T, Pure & Appl. Chem., 57, 603, 1985
- Lee CH, Lee CW, Kim DI, Jung DH, Kim CS, Shin DR, J. Power Sources, 86(1-2), 478, 2000
- Hyun MS, Kim SK, Lee BR, Peck DH, Shul YG, Jung DH, Catalysis Today, 132, 138, 2008
- Antolini E, Cardellini F, J. Alloys and Compounds, 315, 118, 2001
- Cattaneo C, de Pinto MIS, Mishima H, de Mishima BAL, Lescano D, Cornaglia L, J. Electroanal. Chem., 461(1-2), 32, 1999
- Edie DD, Carbon, 36, 345, 1998
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