A new synthesis of a highly dispersed and CO tolerant PtSn/C electrocatalyst for low-temperature fuel cell; its electrocatalytic activity and long-term durability

Lim, Do Young; Choi, Do Lim; Lee, Weon-Doo; Lee, Ho-In

doi:10.1016/j.apcatb.2009.01.011

Cited by 153 publications

(74 citation statements)

References 53 publications

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“…The shift of the CO oxidation onset potential to lower values for the alloyed PtSn/C compared to the Pt/C catalyst is in agreement with works reported previously [26][27][28]. The higher CO oxidation activity at lower potential on the alloyed Pt catalysts may be due to a more effective bifunctional mechanism at lower potential.…”

Section: Esa Cosupporting

confidence: 81%

Electro-oxidation of Ethanol on Carbon Supported PtSn and PtSnNi Catalysts

Hidayati

Scott

2016

Bull. Chem. React. Eng. Catal.

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Even though platinum is known as an active electro-catalyst for ethanol oxidation at low temperatures (< 100 o C), choosing the electrode material for ethanol electro-oxidation is a crucial issue. It is due to its property which easily poisoned by a strong adsorbed species such as CO. PtSn-based electro-catalysts have been identified as better catalysts for ethanol electro-oxidation. The third material is supposed to improve binary catalysts performance. This work presents a study of the ethanol electro-oxidation on carbon supported Pt-Sn and Pt-Sn-Ni catalysts. These catalysts were prepared by alcohol reduction. Nano-particles with diameters between 2.5-5.0 nm were obtained. The peak of (220) crystalline face centred cubic (fcc) Pt phase for PtSn and PtSnNi alloys was repositioned due to the presence of Sn and/or Ni in the alloy. Furthermore, the modification of Pt with Sn and SnNi improved ethanol and CO electro-oxidation.

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Section: Esa Cosupporting

confidence: 81%

Electro-oxidation of Ethanol on Carbon Supported PtSn and PtSnNi Catalysts

Hidayati

Scott

2016

Bull. Chem. React. Eng. Catal.

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“…The crystallite size and lattice constant of the Pt particles were calculated using Eqs. (5) and (6) [53] where d is the crystallite size, λ is the X-ray wavelength, β is the full length at half maximum, a is the lattice constant and θ is the XRD peak angle.…”

Section: Methodsmentioning

confidence: 99%

Effect of Mass Transport on the Electrochemical Oxidation of Alcohols Over Electrodeposited Film and Carbon-Supported Pt Electrodes

et al. 2018

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Electrochemical oxidation of four different alcohol molecules (methanol, ethanol, n-butanol and 2-butanol) at electrodeposited Pt film and carbon-supported Pt catalyst film electrodes, as well as the effect of mass transport on the oxidation reaction, has been studied systematically using the rotating disk electrode (RDE) technique. It was shown that oxidation current decreased with an increase in the rotation rate (ω) for all alcohols studied over electrodeposited Pt film electrodes. In contrast, the oxidation current was found to increase with an increase in the ω for Pt/C in ethanol and n-butanol-containing solutions. The decrease was found to be nearly reversible for ethanol and n-butanol at the electrodeposited Pt film electrode ruling out the possibility of intermediate CO ads poisoning being the sole cause of the decrease and was attributed to the formation of soluble intermediate species which diffuse away from the electrode at higher ω. In contrast, an increase in the current with an increase in ω for the carbon supported catalyst may suggest that the increase in residence time of the soluble species within the catalyst layer, results in further oxidation of these species. Furthermore, the reversibility of the peak current on decreasing the ω could indicate that the surface state has not significantly changed due to the sluggish reaction kinetics of ethanol and n-butanol.

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“…The beneficial effect of Ni addition has been reported earlier for PtSn/C and Pt-Ru/C catalysts. Indeed, significant improvements in ethanol and methanol oxidation were observed [48][49][50]. These observations suggest that the performance of Pt-Sn-Ni/C electrocatalysts depends greatly on its atomic ratios and its preparation.…”

Section: Chronoamperometrymentioning

confidence: 68%

Investigation of Nanometals (Ni and Sn) in Platinum-Based Ternary Electrocatalysts for Ethanol Electro-oxidation in Membraneless Fuel Cells

Ponmani

Kiruthika

Muthukumaran

2015

Journal of Electrochemical Science and Technology

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In the present work, Carbon supported Pt 100 , Pt 80 Sn 20 , Pt 80 Ni 20 and Pt 80 Sn 10 Ni 10 electrocatalysts with different atomic ratios were prepared by ethylene glycol-reduction method to study the electro-oxidation of ethanol in membraneless fuel cell. The electrocatalysts were characterized in terms of structure, morphology and composition by using XRD, TEM and EDX techniques. Transmission electron microscopy measurements revealed a decrease in the mean particle size of the catalysts for the ternary compositions.

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A new synthesis of a highly dispersed and CO tolerant PtSn/C electrocatalyst for low-temperature fuel cell; its electrocatalytic activity and long-term durability

Cited by 153 publications

References 53 publications

Electro-oxidation of Ethanol on Carbon Supported PtSn and PtSnNi Catalysts

Electro-oxidation of Ethanol on Carbon Supported PtSn and PtSnNi Catalysts

Effect of Mass Transport on the Electrochemical Oxidation of Alcohols Over Electrodeposited Film and Carbon-Supported Pt Electrodes

Investigation of Nanometals (Ni and Sn) in Platinum-Based Ternary Electrocatalysts for Ethanol Electro-oxidation in Membraneless Fuel Cells

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