26(2)-04(손정국).fm

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1 Ñ s k w 1Á y 2 Á û 1 Á½ z 1 Á½ 1* 1 ³ w yw, 2 w» (* 1. m ƒ w»» w 4»» y š. w 4»» l, l, l w» w» k. w»» { ƒ j. x š x w ƒwš k (Direct Methanol Fuel Cell: DMFC)[1]ƒ wù ƒ w š. DMFC w {»» w e ƒ œ» j l. k w k y w yw» y k. w y»»» -» y l e y z š. 1 DMFC w ùkü. y ( k ) y w. w mw w m w y w z mw y w y j. yw» yw w y y. w ƒ y y w ƒ w y (Pt) w. DMFC y y w xk(pt or RuPt)[2,3] xk[4,5] ù. w y šƒ ƒwš z ü. x DMFC 1.» d OMC SEM. 10 /, 26«, 2y, 2010

2 s k w ( 2 ). š s k š w s k DMFC w r š w. 2. s k 2. t s k (OMC) TEM. y ƒ j wùƒ šƒ w û. w z yw» w w w w. ƒ ³ w» û. t š k w. k i)» (a high electrical conductivity), ii) t (a large surface area), iii) w(adequate water-handling property) iv) w ü (good corrosion resistance), V) (easy mass-transport), w [6,7]. k t w DMFC w š š. w w k 2 nm w j»œ»œ j» w. ù r s k (OMC: Ordered Mesoporous Carbon) [8,9] t ³»œ w»œ j», w š DMFC z š x w w s k Knox šw š[10], š s e x w w s k 1999 w š [8]. s k k, j»œ ³ w f»œ l p.»œ y w w w» w. w s k w y softtemplate method[11,12] w» w ù - (Nano-replication route)[13,14] w w w. ù - x w s e w» hard-template method š w s e»œ k š ky x e w w w ( 3 ). w 3. ù w OMC w. CATALYSIS Vol. 26, No. 2, 2010 / 11

3 Á yá ûá½ zá½ w s k yw w» ƒ w ƒ š., x s e, k, ky, y z w w s k w w., x s e [15,16],»œ j»[17], j»[18] p w k sw[19,20] w ù k y[21] yw p w. 3. / s k w DMFC k j w j»,, xk» w [5]. y š w û w w. ó 50wt%. w j» w j»ƒ š w. colloid impregnation. Colloid y y (Protective agent) w ³ w j» ù -. w ƒ» w» w y ƒ v w. y w ù mw w w ƒ ù ex k. Impregnation borohydride, hydrozine y w yw w. colloid w j 4. ù xk Pt ƒ Pt/OMC w SEM.»ƒ ³ w w ƒw ƒ f. s k Pt w» w incipient wetness method w [22]. Pt H 2 PtCl 6 ( acetone) w š, s k»œ» y w. ³ wš ƒ / s k w ( 4 ). 4. / s k w w OMC w w k. ù l OMC w» w y ƒ ƒvw DMFC w k OMC w w OMC CMK 12 /, 26«, 2y, 2010

4 s k w šw Ryoo et al. [23]. p k CMK-5 incipient wetness method w 50 wt% Pt 3 nm w j» w. w Pt/CMK-5 w half-cell y carbon black, activated carbon w w mass activity. w y Pt CMK-5 w y w. Nam et al. CMK-3 OMC Pt w y single-cell test ww [24]. Ding et al. CMK-3 10 wt% Pt w k Pt w y [25]. w k y w y w PtRu y. DMFC Pt w» k ù x cross over w y w. Choi et al. Pt/OMC Pt k s e x wewš kyw w [26]. k Pt open circuit voltage(ocv) k w ü. x w» OMC w š DMFC w» w ƒ y w š DMFC w OMC y 5 w DMFC Pt Black j»ƒ 300 nm s k (OMC : Ordered Mesoporous Carbon) 60 wt% Ptƒ Pt/OMC-300 w single-sell test w ƒ potential power density [27]. x 5. DMFC y Pt/OMC Pt black w 40 o C single-cell test ww polarization power density w v. š š w w šƒ Pt w z ƒ. w y DMFC single-cell w wù. j»œ k w OMC»œ» r ù OMC ƒ j» š [18]. j» OMC w w» w x s e j» w w. s e w e Na Si w Sodium silicate w 100, nm s e w w. w s e x w ƒƒ j» w OMC-x(x j») w w.» ƒƒ 60 wt% Pt w single-cell test ww, 3ƒ v Pt j» 3 nm w 300 nm j» Pt/OMC-300 ƒ ( 6 ). w y CATALYSIS Vol. 26, No. 2, 2010 / 13

5 Á yá ûá½ zá½ 6. OMC j» Pt j» single-cell test l. w j»ƒ f x j»œ w ƒ»œ w» š d ù k ù cross over x» j»ƒ w ƒw» DMFC OMC j»ƒ w. w w., Pt y ù» w. OMC k» w k ƒ graphite ƒ¾.» w w ƒ k graphite ƒà ky w. OMC k. SOMC k sucrose w w š POMC graphite ƒ¾ p w» w k phenanthrene w w w [21].» ƒƒ 60 wt% Pt w CV( 7) single-cell test( 8) ww. Pt/ POMC Pt/SOMC Pt w»yw y 7. Pt/POMC Pt/SOMC cyclic voltammograms. (» w 0.1 M HClO 4 w sweep 5 mv/s ). 8. DMFC y Pt/POMC Pt/ SOMC w 50 o C single-cell test ww polarization power density w v. t ƒƒ m 2 /g. w Pt/POMC Pt/SOMC Pt j» ƒƒ nm w. w single-cell test y w š. Pt/POMC Pt/SOMC 50 o C 0.4 V Pt/POMC Pt/SOMC ƒƒ ma/cm 2. Pt/POMC ƒ. w 14 /, 26«, 2y, 2010

6 s k w w OMC» š w. OMC DMFC w y ƒ w w š. ƒ w ù - w OMC w w, yw,» w». w w OMC w ƒ w š. w mw w» w (WCU, R )» ( ) w. š x [1] Carrette, L., Friedrich, K.GA. and Stimming, U. Fuel Cells 1 (2001)G5-39. [2] Park, K.-W., Choi, J.-H., Lee, S.-A., Pak, C., Chang, H. and Sung, Y.-E. Journal of Catalysis 224 (2004) [3] Liu, H., Song, C., Zhang, L., Zhang, J., Wang, H. and Wilkinson, D.P. Journal of Power Sources 155 (2006) [4] Hogarth, M.P. and Ralph,T.R. Platinum Metals Review 46 (2002)G [5] Chan, K.GY., Ding, J., Ren, J.GW., Cheng, S.GA. and Tsang, K.GY. Journal of Materials Chemistry 14 (2004) [6] Antolini, E. Applied Catalysis B: Environmental 88 (2009) [7] Dicks, A.GL. Journal of Power Sources 156 (2006) [8] Ryoo, R., Joo, S.H. and Jun, S. Journal of Physical Chemistry B 103 (1999) [9] Ryoo, R., Joo, S. H., Kruk, M. and Jaroniec, M. Advanced Materials 13 (2001)G [10] Knox, J. H., Kaur, B. and Millward, G.R. Journal of Chromatography A 352 (1986)G3-25. [11] Tanaka, S., Nishiyama, N., Egashira, Y. and Ueyama, K. Chemical Communications (2005). [12] Meng, Y., Gu, D., Zhang, F.GQ., Shi, Y.GF., Cheng, L., Feng, D., Wu, Z.GX., Chen, Z.GX., Wan, Y., Stein, A. and Zhao, D.GY. Chemistry of Materials 18G (2006) [13] Yang, H.GF. and Zhao, D.GY. Journal of Materials Chemistry 15 (2005)G [14] Lu, A. H. and Schuth, F. Advanced Materials 18 (2006) [15] Jun, S., Joo, S. H., Ryoo, R., Kruk, M., Jaroniec, M., Liu, Z., Ohsuna, T. and Terasaki, O. Journal of the American Chemical Society 122(2000)G [16] Kleitz, F., Choi, S.GH. and Ryoo, R. Chemical Communications (2003). [17] Lee, J.GS., Joo, S.GH. and Ryoo, R. Journal of the American Chemical Society 124 (2002)G [18] Joo, S.GH., Lee, H.GI., You, D.GJ., Kwon, K. Kim, J.GH., Choi, Y.GS., Kang, M., Kim, J.GM., Pak, C., Chang, H. and Seung, D. Carbon 46 (2008)G [19] Kruk, M., Kohlhaas, K.GM., Dufour, B., Celer, E.GB., Jaroniec, M., Matyjaszewski, K., Ruoff, R.GS. and Kowalewski, T. Microporous and Mesoporous Materials 102 (2007)G [20] Vinu, A., Anandans, S., Anand, C., Srinivasu, P., Ariga, K. and Mori, T. Microporous and Mesoporous Materials 109 (2008) [21] Joo, S. H., Pak, C., You, D. J., Lee, S. A., Lee, H. I., Kim, J. M., Chang, H. and Seung, D. Electrochimica Acta 52 (2006) [22] Pak, C., Lee, D. J., Kim, S.-A., Kim, J. M. and Chang, H. Samsung J. Innovative Technol. 1 (2005) 239. [23] Joo, S. H., Choi, S. J., Oh, I., Kwak, J., Liu, Z., Terasaki, O. and Ryoo, R. Nature 412(2001) [24] Nam, J. H., Jang, Y. Y., Kwon, Y. U. and Nam, J. D. Electrochemistry Communications 6 (2004) [25] Ding, J., Chan, K.-Y., Ren, J. and Xiao, F.-S. Electrochimica Acta 50 (2005) CATALYSIS Vol. 26, No. 2, 2010 / 15

7 Á yá ûá½ zá½ [26] Choi, W. C., Woo, S. I., Jeon, M. K., Sohn, J. M., Kim, M.R. and Jeon, H.J. Advanced Materials 17 (2005) 446. [27] Kim, H.-T., You, D. J., Yoon, H.-K., Joo, S. H., Pak, C., Chang, H. and Song, I.-S. Journal of Power Sources 180 (2008) /, 26«, 2y, 2010

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