Preparation and characterization of palladium-nickel on graphene oxide support as anode catalyst for alkaline direct ethanol fuel cell

Tan, Joshua L.; Jesus, Arvee M. De; Chua, Stephanie L.; Sanetuntikul, Jakkid; Shanmugam, Sangaraju; Tongol, Bernard John V.; Kim, Hasuck

doi:10.1016/j.apcata.2016.11.034

Cited by 104 publications

(93 citation statements)

References 51 publications

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“…The nonacidic environment of AEMFCs allows the use of nonprecious metal catalysts, which intensely reduces the cost per kilowatt of power of fuel cell devices . In spite of the latest technological progress related to electrocatalysts and to the understanding of carbonation issues, one of the main remaining challenges in the AEMFCs is the availability of good, stable anion conducting membranes that enable the hydroxide anion and water conduction through the polymeric network, both as an anion exchange membrane (AEM) and as anion exchange ionomers (AEIs).…”

Section: Introductionmentioning

confidence: 99%

Electrospun Ionomeric Fibers with Anion Conducting Properties

Mann‐Lahav

Halabi

Shter

et al. 2019

Adv Funct Materials

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Anion conductive nanofiber mats from FAA-3 ionomers are obtained by electrospinning. Depending on the solvent used in the precursor solution, nanofibers with either nonhollow cylindrical or flat ribbon-like cross-sections are prepared. The anion conductivity and water uptake of the ionomeric nanofiber mats are measured as a function of the relative humidity in the 10-90% range and compared to that of a solid membrane cast from the same ionomer. In addition, the anion conductivity of an isolated single fiber of the ionomer is measured for the first time. The anion conductivity of the electrospun single fiber is found to be higher than that of the mats, which is, in turn, one order of magnitude higher than that of the solid ionomer membrane. The higher conductivity of the mats relative to the solid membrane (in both inplane and through-plane directions) is found to be related to the variation in water uptake, which stems from the morphological distinctions. These results increase the understanding of the electrospinning process of ionomers, toward the development and design of new anion conductive ionomer fibers, useful for high performance electrochemical devices.

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Section: Introductionmentioning

confidence: 99%

Electrospun Ionomeric Fibers with Anion Conducting Properties

Mann‐Lahav

Halabi

Shter

et al. 2019

Adv Funct Materials

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“…Based on this understanding, much research has been done in recent years to improve the EOR performance of anode materials and to reduce costs by developing new synthesis methods for catalyst nanostructure preparation, specifically to alloy Pd with other metals like Ru, Pb, Sb, As, Ni, or Bi, as well as to improve the active surface area of the catalyst material on its support [5,[17][18][19]. The benefits of bi-and trimetallic catalysts are that the additives are usually inexpensive and act as co-catalysts that improve catalytic activity and stability [1,8].…”

Section: Introductionmentioning

confidence: 99%

Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method

et al. 2020

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Direct ethanol fuel cells (DEFC) still lack active and efficient electrocatalysts for the alkaline ethanol oxidation reaction (EOR). In this work, a new instant reduction synthesis method was developed to prepare carbon supported ternary PdNiBi nanocatalysts with improved EOR activity. Synthesized catalysts were characterized with a variety of structural and compositional analysis techniques in order to correlate their morphology and surface chemistry with electrochemical performance. The modified instant reduction synthesis results in well-dispersed, spherical Pd 85 Ni 10 Bi 5 nanoparticles on Vulcan XC72R support (Pd 85 Ni 10 Bi 5 /C (II-III) ), with sizes ranging from 3.7 ± 0.8 to 4.7 ± 0.7 nm. On the other hand, the common instant reduction synthesis method leads to significantly agglomerated nanoparticles (Pd 85 Ni 10 Bi 5 /C (I) ). EOR activity and stability of these three different carbon supported PdNiBi anode catalysts with a nominal atomic ratio of 85:10:5 were probed via cyclic voltammetry and chronoamperometry using the rotating disk electrode method. Pd 85 Ni 10 Bi 5 /C (II) showed the highest electrocatalytic activity (150 mA⋅cm −2 ; 2678 mA⋅mg −1 ) with low onset potential (0.207 V) for EOR in alkaline medium, as compared to a commercial Pd/C and to the other synthesized ternary nanocatalysts Pd 85 Ni 10 Bi 5 /C (I) and Pd 85 Ni 10 Bi 5 /C (III) . This new synthesis approach provides a new avenue to developing efficient, carbon supported ternary nanocatalysts for future energy conversion devices. Keywords Pd 85 Ni 10 Bi 5 nanocatalyst . Modified instant reduction synthesis method . Ethanol oxidation reaction activity . Structure . Morphology . Alkaline direct ethanol fuel cell Electronic supplementary material The online version of this article (https://doi.

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“…The Pt-based catalyst-decorated rGO nanosheets often possess more advanced catalytic behaviors in ethanol oxidation than carbon black-supported Pt [91]. Pd-based catalysts supported by rGO have also emerged as promising catalysts for EOR in alkaline solution [92,93]. For instance, Alfi et al synthesized three-dimensional Pd-Cd nanonetworks supported by rGO by a galvanic method [94].…”

Section: Carbon-based Materialsmentioning

confidence: 99%

Advanced Catalytic Materials for Ethanol Oxidation in Direct Ethanol Fuel Cells

et al. 2020

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Direct ethanol fuel cells (DEFCs) have emerged as promising and advanced power systems that can considerably reduce fossil fuel dependence, and thus have attracted worldwide attention. DEFCs have many apparent merits over the analogous devices fed with hydrogen or methanol. As the key constituents, the catalysts for both cathodes and anodes usually face some problems (such as high cost, low conversion efficiency, and inferior durability) that hinder the commercialization of DEFCs. This review mainly focuses on the most recent advances in nanostructured catalysts for anode materials in DEFCS. First, we summarize the effective strategies used to achieve highly active Pt- and Pd-based catalysts for ethanol electro-oxidation, including composition control, microstructure design, and the optimization of support materials. Second, a few non-precious catalysts based on transition metals (such as Fe, Co, and Ni) are introduced. Finally, we outline the concerns and future development of anode catalysts for DEFCs. This review provides a comprehensive understanding of anode catalysts for ethanol oxidation in DEFCs.

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Preparation and characterization of palladium-nickel on graphene oxide support as anode catalyst for alkaline direct ethanol fuel cell

Cited by 104 publications

References 51 publications

Electrospun Ionomeric Fibers with Anion Conducting Properties

Electrospun Ionomeric Fibers with Anion Conducting Properties

Alkaline Ethanol Oxidation Reaction on Carbon Supported Ternary PdNiBi Nanocatalyst using Modified Instant Reduction Synthesis Method

Advanced Catalytic Materials for Ethanol Oxidation in Direct Ethanol Fuel Cells

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