Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC): Effect of carbon precursors of OMC on DMFC performances

Sang Hoon Joo; Chanho Pak; Dae Jong You; Seol Ah Lee; Hyung Ik Lee; Ji Man Kim; Hyuk Chang; Doyoung Seung

doi:10.1016/j.electacta.2006.03.092

Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC): Effect of carbon precursors of OMC on DMFC performances

Sang Hoon Joo, Chanho Pak, Dae Jong You, Seol Ah Lee, Hyung Ik Lee, Ji Man Kim, Hyuk Chang, Doyoung Seung

Research output: Contribution to journal › Article › peer-review

209 Scopus citations

Abstract

This paper presents the effect of graphitic character of ordered mesoporous carbons (OMCs) on the performances of OMC supported catalysts for direct methanol fuel cells (DMFC). Two OMC samples with hexagonal mesostructure were prepared from phenanthrene and sucrose by nano-replication method using mesoporous silica as a template. Structural characterizations revealed that both OMCs exhibited large BET surface area and uniform mesopores, while the OMC synthesized from phenanthrene exhibited lower sheet resistance than the OMC derived from sucrose. The Pt nanoparticles were supported on both OMCs with very high dispersion, as the particle size was estimated under 3 nm despite high metal loading of 60 wt.%. In DMFC single cell test, the OMC supported Pt catalysts exhibited much higher performance than the commercial catalyst, which may be attributed to the high surface area and uniform mesopore networks of OMC. In particular, it was found that the performance of OMC supported catalysts can be significantly enhanced by lowering the resistance of OMC.

Original language	English
Pages (from-to)	1618-1626
Number of pages	9
Journal	Electrochimica Acta
Volume	52
Issue number	4
DOIs	https://doi.org/10.1016/j.electacta.2006.03.092
State	Published - 1 Dec 2006
Externally published	Yes

Keywords

Cathode catalyst
Direct methanol fuel cell
Ordered mesoporous carbon
Platinum
Sheet resistance

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10.1016/j.electacta.2006.03.092

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title = "Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC): Effect of carbon precursors of OMC on DMFC performances",

abstract = "This paper presents the effect of graphitic character of ordered mesoporous carbons (OMCs) on the performances of OMC supported catalysts for direct methanol fuel cells (DMFC). Two OMC samples with hexagonal mesostructure were prepared from phenanthrene and sucrose by nano-replication method using mesoporous silica as a template. Structural characterizations revealed that both OMCs exhibited large BET surface area and uniform mesopores, while the OMC synthesized from phenanthrene exhibited lower sheet resistance than the OMC derived from sucrose. The Pt nanoparticles were supported on both OMCs with very high dispersion, as the particle size was estimated under 3 nm despite high metal loading of 60 wt.\%. In DMFC single cell test, the OMC supported Pt catalysts exhibited much higher performance than the commercial catalyst, which may be attributed to the high surface area and uniform mesopore networks of OMC. In particular, it was found that the performance of OMC supported catalysts can be significantly enhanced by lowering the resistance of OMC.",

keywords = "Cathode catalyst, Direct methanol fuel cell, Ordered mesoporous carbon, Platinum, Sheet resistance",

author = "Joo, \{Sang Hoon\} and Chanho Pak and You, \{Dae Jong\} and Lee, \{Seol Ah\} and Lee, \{Hyung Ik\} and Kim, \{Ji Man\} and Hyuk Chang and Doyoung Seung",

year = "2006",

month = dec,

day = "1",

doi = "10.1016/j.electacta.2006.03.092",

language = "English",

volume = "52",

pages = "1618--1626",

journal = "Electrochimica Acta",

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TY - JOUR

T1 - Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC)

T2 - Effect of carbon precursors of OMC on DMFC performances

AU - Joo, Sang Hoon

AU - Pak, Chanho

AU - You, Dae Jong

AU - Lee, Seol Ah

AU - Lee, Hyung Ik

AU - Kim, Ji Man

AU - Chang, Hyuk

AU - Seung, Doyoung

PY - 2006/12/1

Y1 - 2006/12/1

N2 - This paper presents the effect of graphitic character of ordered mesoporous carbons (OMCs) on the performances of OMC supported catalysts for direct methanol fuel cells (DMFC). Two OMC samples with hexagonal mesostructure were prepared from phenanthrene and sucrose by nano-replication method using mesoporous silica as a template. Structural characterizations revealed that both OMCs exhibited large BET surface area and uniform mesopores, while the OMC synthesized from phenanthrene exhibited lower sheet resistance than the OMC derived from sucrose. The Pt nanoparticles were supported on both OMCs with very high dispersion, as the particle size was estimated under 3 nm despite high metal loading of 60 wt.%. In DMFC single cell test, the OMC supported Pt catalysts exhibited much higher performance than the commercial catalyst, which may be attributed to the high surface area and uniform mesopore networks of OMC. In particular, it was found that the performance of OMC supported catalysts can be significantly enhanced by lowering the resistance of OMC.

AB - This paper presents the effect of graphitic character of ordered mesoporous carbons (OMCs) on the performances of OMC supported catalysts for direct methanol fuel cells (DMFC). Two OMC samples with hexagonal mesostructure were prepared from phenanthrene and sucrose by nano-replication method using mesoporous silica as a template. Structural characterizations revealed that both OMCs exhibited large BET surface area and uniform mesopores, while the OMC synthesized from phenanthrene exhibited lower sheet resistance than the OMC derived from sucrose. The Pt nanoparticles were supported on both OMCs with very high dispersion, as the particle size was estimated under 3 nm despite high metal loading of 60 wt.%. In DMFC single cell test, the OMC supported Pt catalysts exhibited much higher performance than the commercial catalyst, which may be attributed to the high surface area and uniform mesopore networks of OMC. In particular, it was found that the performance of OMC supported catalysts can be significantly enhanced by lowering the resistance of OMC.

KW - Cathode catalyst

KW - Direct methanol fuel cell

KW - Ordered mesoporous carbon

KW - Platinum

KW - Sheet resistance

UR - https://www.scopus.com/pages/publications/33751206530

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DO - 10.1016/j.electacta.2006.03.092

M3 - Article

AN - SCOPUS:33751206530

SN - 0013-4686

VL - 52

SP - 1618

EP - 1626

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 4

ER -

Ordered mesoporous carbons (OMC) as supports of electrocatalysts for direct methanol fuel cells (DMFC): Effect of carbon precursors of OMC on DMFC performances

Abstract

Keywords

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