Electrocatalytic properties of platinum nanoparticles supported on fluorine tin dioxide/multi-walled carbon nanotube composites for methanol electrooxidation in acidic medium

Guo, Dao‐Jun

doi:10.1016/j.jcis.2011.03.019

Cited by 12 publications

(8 citation statements)

References 26 publications

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“…Then, the product was filtrated under vacuum, washed with water and dried at 60 • C for 48 h under vacuum. 30,31 Finally, Pt nanoparticles were synthesized using chemical reduction of hexachloroplatinic acid (Thermo Fisher GmbH, Germany). 725 mg H 2 PtCl 6 •6H 2 O were dissolved in 88 mL ethylene glycol (Carl Roth GmbH und Co. KG, Germany), serving as solvent and as reducing and nanoparticle stabilization agent.…”

Section: Methodsmentioning

confidence: 99%

“…With respect to direct methanol fuel cells (DMFCs), FTO composites have been investigated as anodic catalyst support. Guo et al 31 tested FTO nanoparticles on multi-walled carbon nanotubes (MWCNTs) and showed a positive effect of fluorine-doping on the activity for methanol oxidation. Yang et al 32 electrochemically reduced graphene oxide on an electrode consisting of FTO.…”

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confidence: 99%

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Durability of Electrocatalysts for ORR: Pt on Nanocomposite of Reduced Graphene Oxide with FTO versus Pt/C

Schonvogel

Hülstede

Wagner³

et al. 2018

J. Electrochem. Soc.

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Catalyst degradation results in performance losses of proton exchange membrane fuel cells (PEMFC) and is caused by electrochemical instability of commonly used platinum on carbon black (Pt/C). In this study, a comparison in durability of commercial Pt/C with a new Pt catalyst on a nanocomposite of fluorine-doped SnO 2 (FTO) and reduced graphene oxide (rGO) is carried out. Transmission electron microscopy (TEM) shows similar Pt distributions on support surfaces and Pt particle sizes so that a high comparability of support materials during durability investigation is ensured. High resolution TEM with EDS reveals dispersed Pt anchored at FTO-rGO interfaces. During stripping voltammetry Pt/FTO-rGO provides weaker CO sorption than Pt/C, indicating higher CO tolerances. Accelerated stress testing (0.05-1.47 V RHE) provokes Pt degradation on both supports in comparable rates. However, the FTO-rGO nanocomposite presents the more stable substrate in this study compared to carbon black. Identical location TEM illustrates stable FTO particles in size and position on rGO surface. Moreover, unchanged hydroquinone/quinone (HQ/Q) amounts and double layer capacitance in case of Pt/FTO-rGO were revealed by cyclic voltammetry. On the contrary, standard Pt/C shows significantly more generation of HQ/Q functionalities by a factor of 25 and thus higher carbon corrosion.

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Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Durability of Electrocatalysts for ORR: Pt on Nanocomposite of Reduced Graphene Oxide with FTO versus Pt/C

Schonvogel

Hülstede

Wagner³

et al. 2018

J. Electrochem. Soc.

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“…The vacuum enabled the complete reduction of all the ions to metallic Pt and Sn. Carbon nanotubes have been used for supporting Pt‐Sn nanoparticles for DAFC applications . Carbon nanotubes have chemically inert surfaces, hence, it is difficult to attach metal nanoparticles .…”

Section: Introductionmentioning

confidence: 99%

Pt‐Sn Nanoparticles Supported on Carbon Nanodots as Anode Catalysts for Alcohol Electro‐oxidation in Acidic Conditions

2018

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The Pt‐Sn/CNDs electrocatalyst was synthesized by the alcohol reduction method with the aim to reduce platinum loading and improve electroactivity. XPS results showed that the nanoparticles were present in the form of Pt‐Sn metallic alloy with a significant amount of SnO‐ species which facilitate the rapid oxidation of CO intermediates. The lattice parameter of Pt in Pt‐Sn/CNDs electrocatalyst was calculated to be 0.3926 nm; this value is higher than 0.3921 nm, the lattice parameter of Pt in Pt/CNDs electrocatalyst. XRD results proved that incorporating tin (Sn) into the Pt/CNDs electrocatalyst modifies the face centred cubic shape of platinum to a crystalline structure which improves the alcohol electro‐oxidation reactions. The electrochemical tests proved that the Pt‐Sn/CNDs electrocatalyst exhibited high current densities and lower poisoning rates compared to the Pt/CNDs and Pt/C electrocatalysts. The Pt‐Sn/CNDs electrocatalyst showed the greatest electroactivity for both methanol and ethanol electro‐oxidation reactions.

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“…High‐resolution transmission electron microscopyimages of platinum‐fluorine tin oxide/multiwall carbon nanotube composites with low and high magnification…”

Section: Hybrid Supportsmentioning

confidence: 99%

Recent advances in hybrid support material for Pt‐based electrocatalysts of proton exchange membrane fuel cells

et al. 2018

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Summary Proton exchange membrane fuel cell is an energy conversion technology with an excellent potential to replace fossil fuel–based internal combustion engines. Evenly distributed Pt on conductive support is commonly used as an electrocatalyst. This catalyst support material is a key component of proton exchange membrane fuel cell as it greatly affects the cost, durability, and electrochemical activity of fuel cells. Although the carbon‐based support materials have evolved in the last few decades, there is still need to explore other alternatives as the corrosion of carbon is inevitable under the harsh environments within the catalyst layer of proton exchange membrane fuel cells. Moreover, the performance of noncarbon supports is also not satisfactory. Therefore, the advent of hybrid support materials, which are electrochemically stable and cost‐effective, is required. The hybrid supports exhibiting the characteristics of contributing component, or even showing synergistic effect, would circumvent the shortcomings associated with individual components. This review introduces the recent advances in hybrid support materials, including carbonaceous and noncarbonaceous one; discusses the pros and cons of different support materials; and highlights the improved properties of hybrid supports as compared with the individual components.

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Electrocatalytic properties of platinum nanoparticles supported on fluorine tin dioxide/multi-walled carbon nanotube composites for methanol electrooxidation in acidic medium

Cited by 12 publications

References 26 publications

Durability of Electrocatalysts for ORR: Pt on Nanocomposite of Reduced Graphene Oxide with FTO versus Pt/C

Durability of Electrocatalysts for ORR: Pt on Nanocomposite of Reduced Graphene Oxide with FTO versus Pt/C

Pt‐Sn Nanoparticles Supported on Carbon Nanodots as Anode Catalysts for Alcohol Electro‐oxidation in Acidic Conditions

Recent advances in hybrid support material for Pt‐based electrocatalysts of proton exchange membrane fuel cells

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