Synthesis and characterisation of Pd–Ni–Sn electrocatalyst for use in direct ethanol fuel cells

Jongsomjit, Sompoch; Prapainainar, Paweena; Sombatmankhong, Korakot

doi:10.1016/j.ssi.2015.12.009

Cited by 31 publications

(12 citation statements)

References 42 publications

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“…standard deviation) of all catalysts using the parameters (Eq. (2)) such as Q * Pd (= reduction charge of 405 μC•cm −2 of PdO to Pd, assumed value according to Jongsomjit et al [29]), cL (= catalyst loading of 56 μgPd•cm −2 on the RDE) and the AGC (= surface area of 0.196 cm 2 from the glassy carbon substrate (GC) on RDE) are demonstrated in Figs. 4(b), 4(f) and 4(j) [13].…”

Section: Ni and Bi Effects On Eor Performance Of Pd/c Catalystsmentioning

confidence: 99%

“…The third element in carbon supported ternary anode catalysts for the ADEFC can additionally improve or strengthen the alkaline EOR performances of the catalyst relating to catalytic activity (onset potential and current density), long-term stability and byproduct tolerance compared to carbon supported binary EOR catalysts [9,19,[24][25][26][27][28][29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

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Novel highly active carbon supported ternary PdNiBi nanoparticles as anode catalyst for the alkaline direct ethanol fuel cell

et al. 2019

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The study focuses on the influence of Ni and Bi on alkaline ethanol oxidation reaction (EOR) activities, stabilities and structure characteristics of carbon supported Pd-based nanocatalysts (Pd/C, Pd 60 Ni 40 /C, Pd 60 Bi 40 /C, Pd 60 Ni 20 Bi 20 /C) by cyclic voltammetry/chronoamperometry using rotating disk electrode and various physico-chemical methods such as X-ray powder diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy coupled with energy dispersive X-ray spectroscopy and inductively coupled plasma optical emission spectrometry. Nickel generates more adsorbed OH on the Pd catalyst surface than Bi and promotes the oxidation of adsorbed ethanol species. This results in a low onset potential toward ethanol oxidation with high current density. The presence of Bi facilitates high tolerance toward various reaction intermediates resulting from the incomplete ethanol oxidation, but might also initiate the agglomeration of Pd nanoparticles. The novel Pd 60 Ni 20 Bi 20 /C nanocatalyst displays exceptional byproduct tolerance, but only satisfying catalytic activity toward ethanol oxidation in an alkaline medium. Therefore, the EOR performance of the novel carbon supported ternary Pd x Ni y Bi z anode catalyst with various atomic variations (Pd 70 Ni 25 Bi 5 /C, Pd 70 Ni 20 Bi 10 /C, Pd 80 Ni 10 Bi 10 /C and Pd 40 Ni 20 Bi 40 /C) using the common instant reduction synthesis method was further optimized for the alkaline direct ethanol fuel cell. The carbon supported Pd:Ni:Bi nanocatalyst with atomic ratio of 70:20:10 displays outstanding catalytic activity for the alkaline EOR compared to the other Pd x Ni y Bi z /C nanocatalysts as well as to the benchmarks Pd/C, Pd 60 Ni 40 /C and Pd 60 Bi 40 /C. The synergy and the optimal content in consideration of the oxide species of Pd, Ni and Bi are crucial for the EOR kinetic enhancement in alkaline medium.

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Section: Ni and Bi Effects On Eor Performance Of Pd/c Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel highly active carbon supported ternary PdNiBi nanoparticles as anode catalyst for the alkaline direct ethanol fuel cell

et al. 2019

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“…From this point of view, much cheaper materials such as pure nickel [21,35] or nickel-based nanocomposites on different substrates [36][37][38][39][40] would be of high interest. The latter have indeed been successfully tested for ethanol electro-oxidation (EEO) in alkaline medium, although some optimizations are still needed to improve the catalytic performance and also to validate alternative methodologies of synthesis that would be both simpler and cheaper.…”

Section: Introductionmentioning

confidence: 99%

A Sustainable Carbon Material from Kraft Black Liquor as Nickel-Based Electrocatalyst Support for Ethanol Electro-Oxidation

Amaral-Labat

Silva

Cuña

et al. 2020

Waste Biomass Valor

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The present work deals with a new methodology to produce a sustainable carbon material through a simple synthetic route, and its performance as Ni-based electrocatalyst support. Such porous carbon was easily synthesized from the raw Kraft black liquor, a by-product rich in lignin, by chemical polymerization in alkaline medium with a nickel source and subsequent activation by CO2. Nickel nanoparticles were homogeneously distributed in the samples, as revealed by STEM images. XPS analyses and BET method indicated the presence of Ni species in the synthesized material and a micro-mesoporous structure, respectively. The electrochemical characterization in NaOH and NaOH + ethanol solutions showed that the as-prepared material has the relevant potential to be applied as electrocatalyst for Ethanol Oxidation Reaction (EOR) in alkaline medium.

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“…Some Pd-based catalysts such as Pd-Co [5], Pd-Ni [6][7][8], Pd-Ni-Sn [9], Pd-Ru-Ni [10], Pd-Cu [11], Pd-Au [12], Pd-Ag [13], or Pt-Pb [14] have been studied to minimize Pd content and poisoning effect in high electrochemical activity of remaining Pd. According to various researches, the presence of transition metals such as Co and Ni, provided M-ROH ads or formed M-(ROH) x species (where M is the metal atom, ROH are methanol or ethanol), which changed the ethanol adsorption ability and enhanced the adsorption process of intermediate CHO ads , CO ads , limiting the poisoning process and thus improving the catalytic activity [5-7, 9, 10].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium

Nguyen

Tran

Nguyen

et al. 2019

Journal of Chemistry

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The article presents modified Pd-based catalysts supported on reduced graphene oxide (rGO), used in the electrooxidation reaction of ethanol in alkaline medium. When NaBH4 reducing agent was used, the random presence of Na was found out. According to this result, Na was used as a promoter of Pd-based catalyst. Consequently, the Al-Si-Na addition not only assisted active phase Pd nanoparticles to disperse homogenously on graphene surport, but also contributed to increase catalytic activity in the reaction. This value, 16138 mA·mg−1Pd, is about 1.5 times higer than that of the catalyst modified by Al-Si. Moreover, the stability of the catalyst is enhanced more. The electrochemical stability of PASGN.N catalyst was relatively good: after 500 scanning cycles, the current density diminished 32% compared with the highest peak current density of the 15th cycle, which was chosen as a reference. These significant improvement results in electrooxidation of ethanol have opened up the high potential application of these catalysts in direct-ethanol fuel cell.

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Synthesis and characterisation of Pd–Ni–Sn electrocatalyst for use in direct ethanol fuel cells

Cited by 31 publications

References 42 publications

Novel highly active carbon supported ternary PdNiBi nanoparticles as anode catalyst for the alkaline direct ethanol fuel cell

Novel highly active carbon supported ternary PdNiBi nanoparticles as anode catalyst for the alkaline direct ethanol fuel cell

A Sustainable Carbon Material from Kraft Black Liquor as Nickel-Based Electrocatalyst Support for Ethanol Electro-Oxidation

Enhancing Activity of Pd-Based/rGO Catalysts by Al-Si-Na Addition in Ethanol Electrooxidation in Alkaline Medium

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