Electrodeposited PtRu on cryogel carbon–Nafion supports for DMFC anodes

Arbizzani, Catia; Beninati, Sabina; Manferrari, Elisa; Soavi, Francesca; Mastragostino, Marina

doi:10.1016/j.jpowsour.2006.05.010

Cited by 28 publications

(19 citation statements)

References 26 publications

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“…These materials can be used as an efficient catalyst support in a non-oxidizing environment [192][193][194][195][196] or as sorbent for a number of organic species [186,[197][198][199]. A combination of high specific surface area with good electronic conductivity makes carbon cryogels a promising electrode material for electric double-layer supercapacitors [200][201][202][203][204][205][206].…”

Section: Polymer-derived Cryogelsmentioning

confidence: 99%

Inorganic Cryogels

Shlyakhtin¹

2014

Polymeric Cryogels

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Section: Polymer-derived Cryogelsmentioning

confidence: 99%

Inorganic Cryogels

Shlyakhtin¹

2014

Polymeric Cryogels

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“…Another important application of the carbon cryogels is related to their chemical stability and high specific surface area that make them a useful substrate material for various electrocatalysts including PtRu-coated anode materials for direct methanol fuel cells (DMFC) [62]. Cryogel-supported Pt nanoparticle electrocatalyst of hydrogen oxidation demonstrated considerably better activity compared to the same catalyst at the commercially available Vulcan XC-72 microporous carbon [63].…”

Section: Carbon Aerogels and Their Applicationsmentioning

confidence: 99%

Inorganic cryogels for energy saving and conversion

Shlyakhtin

2008

J Electroceram

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Cryogels are usually obtained by freezing and thawing or freeze drying of gels and residues. Essential morphological features of the cryogels are bimodal pore size distribution, nanosize of the primary particles (crystallites) and their low agglomeration. Widely used for a decades in the polymer science and technology, cryogels find now a growing number of applications in the electroceramic materials. Freeze casting technique based on the freeze gelation effect is proved to be useful forming method in the production of complex-shaped SiO 2 -containing electroceramics. Directed modification of the micromorphology by using solvent exchange schemes allows to obtain SiO 2 cryogel monoliths with density ≤ 0.05 g cm −3 and specific surface area 700-800 m 2 g −1 suitable for cryogenic thermal insulation of the superconducting devices. Excellent electrocatalytic activity of the macro/mesoporous PtRu/C cryogels in the methanol oxidation reaction makes them perspective anode materials of direct methanol fuel cells. Application of the cryogel-derived starting powders promoted substantial reduction of the sintering temperatures for a number of electroceramic materials. MnO 2 -and V 2 O 5 -based cryogels are efficient cathode materials for secondary lithium batteries with specific capacity up to 300 mAh g −1 .Recent studies demonstrated also a feasibility of cryochemical approaches to the synthesis of complex oxide-based nanocrystalline electrode materials for electrochemical supercapacitors with high specific capacity at current densities up to 50 mA cm −2 .

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“…The use of carbon gels as catalysts supports has been previously reported. Catalysts supported on carbon gels (aerogels, cryogels and xerogels) showed higher activities towards methanol oxidation and oxygen reduction, in comparison to catalysts supported on commercial carbon blacks, such as Vulcan [12,[15][16][17][18]. Vulcan XC-72R, with a surface area of ca.…”

Section: Introductionmentioning

confidence: 99%

“…Arbizzani et al developed PtRu catalysts, prepared by both chemical and electrochemical routes, on mesoporous cryo-and xerogel carbons [18]. Their results were compared to those obtained with Vulcan-supported PtRu, resulting in almost double specific catalytic activity when Vulcan was substituted by the former carbons.…”

Section: Introductionmentioning

confidence: 99%

PtRu Nanoparticles Deposited by the Sulfite Complex Method on Highly Porous Carbon Xerogels: Effect of the Thermal Treatment

et al. 2013

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Highly porous carbon xerogels (CXGs) were synthesized to be used as support for PtRu nanoparticles. Metal particles were deposited on CXGs by means of the sulfite complex method for the first time. Catalysts so-obtained were submitted to thermal treatment in H 2 , at different temperatures, in order to increase the particle size and thus the intrinsic activity. Physico-chemical characterizations included N 2 physisorption, X-Ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy. Highly dispersed alloyed PtRu particles were obtained, with crystal sizes ranging from 1.6 to 2.0 nm. PtRu-catalysts were tested in half-cell for the methanol oxidation reaction (MOR). The resulting thermal treatment was effective in increasing both particle size and catalytic activity toward MOR.

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Electrodeposited PtRu on cryogel carbon–Nafion supports for DMFC anodes

Cited by 28 publications

References 26 publications

Inorganic Cryogels

Inorganic Cryogels

Inorganic cryogels for energy saving and conversion

PtRu Nanoparticles Deposited by the Sulfite Complex Method on Highly Porous Carbon Xerogels: Effect of the Thermal Treatment

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