Performance of polymer electrolyte membrane fuel cells with carbon nanotubes as oxygen reduction catalyst support material

Rajalakshmi, N.; Ryu, Ho Jin; Shaijumon, Manikoth M.; Ramaprabhu, S.

doi:10.1016/j.jpowsour.2004.08.042

Cited by 213 publications

(126 citation statements)

References 21 publications

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“…However, it should be pointed out that the catalytic activities achieved with the Pt/GCNs are higher than the values reported in the literature for electrocatalysts made up of Pt supported on other forms of graphitic carbon, such as multiwalled carbon nanotubes [31,32]. On the other hand, no functionalization of the supports (contrary to what normally happens with carbon nanotubes [32][33][34][35][36]) has been necessary to achieved good dispersions of Pt nanoparticles.…”

Section: Electrocatalytic Activity Of the Pt/gcnsmentioning

confidence: 74%

Direct synthesis of graphitic carbon nanostructures from saccharides and their use as electrocatalytic supports

Sevilla

Sanchís

Valdés-Solı́s

et al. 2008

Carbon

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Section: Electrocatalytic Activity Of the Pt/gcnsmentioning

confidence: 74%

Direct synthesis of graphitic carbon nanostructures from saccharides and their use as electrocatalytic supports

Sevilla

Sanchís

Valdés-Solı́s

et al. 2008

Carbon

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“…In addition to carbon-type supports, many non-carbon supports [63,[103][104][105][106][107][108], such as substoichiometric titanium oxide [107], tungsten carbide [104], and indium tin oxide [105], have been investigated to replace the conventional carbon supports and achieve greater stability during long-term tests.…”

Section: Alternative Catalyst Supportsmentioning

confidence: 99%

A review on performance degradation of proton exchange membrane fuel cells during startup and shutdown processes: Causes, consequences, and mitigation strategies

Wang

et al. 2012

Journal of Power Sources

264

150

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a b s t r a c tPerformance degradation during startup and shutdown is considered an important issue affecting the durability and lifetime of proton exchange membrane fuel cells (PEMFCs). Due to the high potentials experienced by the cathode during startup and shutdown, the conventional carbon support for the cathode catalyst is prone to oxidation by reacting with oxygen or water. This paper presents an overview of the causes and consequences of performance degradation after frequent startup-shutdown cycles. Mitigation strategies are also summarized, including the use of novel catalyst supports and the application of system strategies to prevent performance degradation in PEMFCs. It is found from the literature review that improvements in catalyst supports to prevent oxidation come at the expense of high cost, and the novel supports developed to date are not sufficient to completely prevent carbon oxidation in fuel cell engines. System strategies, including potential control and reaction gas control, have been developed and applied in fuel cell engines to alleviate or even avoid performance decay. This review aims to provide a clear understanding of the mechanisms related to degradation behaviors during the startup and shutdown processes, thereby helping fuel cell material or system developers in their efforts to prevent performance degradation and prolong the lifetime of PEMFCs.Crown

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“…Indeed, the utility of carbon nanotubes as platinum catalyst supports for polymer electrolyte membrane (PEM) fuel cells has been discussed in the recent literature. [16][17][18][19] The present study employs CNTs in the anodes of SAFCs as a proof-of-principle for the design strategy of enhanced interconnectivity. Although overpotentials at the cathode are more severe than at the anode of SAFCs 7 (as they are in state-of-the-art PEM fuel cells 20 ) the Pt loadings of B3 mg cm À2 in SAFC anodes remain high and substantial reductions in costs can be anticipated by enhancing utilization even for hydrogen electrooxidation.…”

Section: à2mentioning

confidence: 99%

Carbon nanotubes as electronic interconnects in solid acid fuel cell electrodes

Varga

Pfohl

Brunelli

et al. 2013

Phys. Chem. Chem. Phys.

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Carbon nanotubes have been explored as interconnects in solid acid fuel cells to improve the link between nanoscale Pt catalyst particles and macroscale current collectors. The nanotubes were grown by chemical vapor deposition on carbon paper substrates, using nickel nanoparticles as the catalyst, and were characterized using scanning electron microscopy and Raman spectroscopy. The composite electrode material, consisting of CsH 2 PO 4 , platinum nanoparticles, and platinum on carbon-black nanoparticles, was deposited onto the nanotube-overgrown carbon paper by electrospraying, forming a highly porous, fractal structure. AC impedance spectroscopy in a symmetric cell configuration revealed a significant reduction of the electrode impedance as compared to similarly prepared electrodes without carbon nanotubes.

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Performance of polymer electrolyte membrane fuel cells with carbon nanotubes as oxygen reduction catalyst support material

Cited by 213 publications

References 21 publications

Direct synthesis of graphitic carbon nanostructures from saccharides and their use as electrocatalytic supports

Direct synthesis of graphitic carbon nanostructures from saccharides and their use as electrocatalytic supports

A review on performance degradation of proton exchange membrane fuel cells during startup and shutdown processes: Causes, consequences, and mitigation strategies

Carbon nanotubes as electronic interconnects in solid acid fuel cell electrodes

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