Synthesis and characterization of mesoporous carbon for fuel cell applications

Chang, Hyuk; Joo, Sang Hoon; Pak, Chanho

doi:10.1039/b700389g

Cited by 347 publications

(225 citation statements)

References 83 publications

(115 reference statements)

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“…The total loading of Pt was controlled as high as 60 wt%, because an electrocatalyst for DMFC application requires very high metal loading (Chang et al, 2007). The TEM image of Pt/OMC ( Fig.…”

Section: Characteristics Of Omc Support and Pt/omc Catalystmentioning

confidence: 99%

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High Performance Membrane Electrode Assemblies by Optimization of Processes and Supported Catalysts

Pak¹,

You²,

Choi³

et al. 2012

Hydrogen Energy - Challenges and Perspectives

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Section: Characteristics Of Omc Support and Pt/omc Catalystmentioning

confidence: 99%

“…The Pt/OMC catalysts have been developed in our lab over several years for the DMFC, which is based on the novel OMC supports having very high surface area and ordered array of mesopores inside the particles (Chang et al, 2007, He et al, 2010, Joo et al, 2009., Lee et al, 2009, Pak et al, 2009.…”

Section: High Performance Mea Using New Supported Catalystmentioning

confidence: 99%

High Performance Membrane Electrode Assemblies by Optimization of Processes and Supported Catalysts

Pak¹,

You²,

Choi³

et al. 2012

Hydrogen Energy - Challenges and Perspectives

Self Cite

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“…In an attempt to improve catalyst utilisation, non-conventional carbon and non-carbonaceous catalyst supports have been recently developed, e.g. ordered mesoporous carbons [55], carbon nanotubes [56], graphene and graphene oxides [57] and conducting polymers [58]. Notably, ordered mesoporous carbons feature highly controllable structure, size and pore size and some of the recent relevant experimental studies have shown promising results [59,60].…”

Section: Introductionmentioning

confidence: 99%

Effects of catalyst agglomerate shape in polymer electrolyte fuel cells investigated by a multi-scale modelling framework

Ismail

Ingham

et al. 2017

Energy

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A multi-scale modelling framework is developed for the PEFC cathode electrode. Unlike the conventional agglomerate model, the effects of the microstructure of the agglomerate are numerically coupled to the fuel cell-scale model in this framework. This is performed through solving the agglomerate-scale model first and subsequently extracting and using the data required to generate the performance curves in the fuel cell-scale model. This enables one to freely investigate the structure of the agglomerate without being limited to the only three agglomerate shapes that can be investigated using the conventional agglomerate model: spheres, long cylinders with sealed ends and long slabs with sealed ends. The numerical studies conducted in this work using the developed framework have revealed that the performance of the cathode electrode is highly sensitive to the specific surface area of the agglomerate if the size of the latter is relatively large, i.e. of the order of 1000 nm. Namely, the maximum reported current density has increased by about 60% when changing from the 'large' spherical agglomerate to the 'large' cylindrical agglomerate. Also, it has been shown that a slight change in the structure of the agglomerate may significantly improve the fuel cell performance.

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“…The application of mesoporous carbon (MC) as a catalyst support material has been studied extensively due to its favorable properties for PEM fuel cell electrodes [1][2][3][4][5][6][7][8][9][10]. The high surface area allows for a fine dispersion of Pt nanoparticles, thus resulting in a large active catalyst surface.…”

Section: Introductionmentioning

confidence: 99%

Improved stability of mesoporous carbon fuel cell catalyst support through incorporation of TiO2

Bauer

Song

Ignaszak

et al. 2010

Electrochimica Acta

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The electrochemical stability of Pt deposited on mesoporous carbon, which was either applied in its unmodified state or coated with 20 wt% TiO 2 , was investigated by cyclic voltammetry in N 2 purged 0.5 M sulfuric acid. XRD analysis revealed that TiO 2 was present in the anatase phase. The mean Pt particle diameter was ∼6 and ∼4 nm for mesoporous carbon with and without TiO 2 , respectively. Pt supported on TiO 2 modified substrates was more stable than Pt supported on conventional mesoporous carbon when subjected to 1000 cycles in the potential range from 0.05 to 1.25 V vs. RHE. This was evident from the observation that the support with TiO 2 retained ∼53% of the electrochemically active surface area relative to the state observed after 100 cycles, whereas ∼33% of the active area remained in the case without TiO 2 . The oxygen reduction mass activity was identical for both fresh samples (i.e., 18 A g −1 Pt). After 1000 cycles the mass activity decreased to 10 A g −1 Pt for the case without TiO 2 , whereas with TiO 2 the deactivation was minor; i.e., the mass activity after 1000 cycles was 17 A g .

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Synthesis and characterization of mesoporous carbon for fuel cell applications

Cited by 347 publications

References 83 publications

High Performance Membrane Electrode Assemblies by Optimization of Processes and Supported Catalysts

High Performance Membrane Electrode Assemblies by Optimization of Processes and Supported Catalysts

Effects of catalyst agglomerate shape in polymer electrolyte fuel cells investigated by a multi-scale modelling framework

Improved stability of mesoporous carbon fuel cell catalyst support through incorporation of TiO2

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