Glycerol oxidation on Pd nanocatalysts obtained on PEDOT-coated graphite supports

Nakova, A.; Ilieva, M.; Boijadjieva-Scherzer, Tz; Tsakova, V.

doi:10.1016/j.electacta.2019.03.151

Cited by 12 publications

(4 citation statements)

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“…However, the choice of a suitable support is essential to achieve a better cell performance (Dwivedi et al, 2018). Many studies were carried out on applying conjugated polymers with high conductivity such as PANI (Ivanova et al, 2016), PPy (Ghosh et al, 2017a), poly-para-phenylendiamine (PpPD) [The electrocatalytic oxidation of methanol on a carbon paste electrode modified by poly (para-phenylenediamine) and Nickel particles, 2019], poly-ortho-phenylendiamine (PoPD) (Gajendran and Saraswathi, 2013;Parsa and Amanzadeh-Salout, 2016;Halim et al, 2019a), PEDOT (Nakova et al, 2019) as support of metallic nanoparticles.…”

Section: Binary and Ternary Alloys Supported On Conducting Polymersmentioning

confidence: 99%

Recent Advances in Anode Metallic Catalysts Supported on Conducting Polymer-Based Materials for Direct Alcohol Fuel Cells

et al. 2022

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Sustainable energy development is a major challenge, particularly when considering population increase, rising energy demands resulting from the excessive use of nonrenewable fossil fuels, and growing consequences on global pollution and climate change. It is critical to continue to develop new sources of renewable and clean energy. Direct alcohol fuel cell (DAFC) represents a technological approach that meets all the requirements in terms of energy conversion with good electrical efficiency and lower emissions of pollutants. However, it largely suffers from the poisoning of the anode catalyst caused by the accumulation of intermediate products. In this context, this review is devoted to discussing the recent progress in anode catalysts based on conducting polymers (CPs) materials for direct alcohol fuel cells, especially direct methanol and ethanol fuel cells, from the viewpoint of synthesis techniques, morphology, and catalytic performance. In the first part of this review, we will explore the most commonly used methods for preparing metal-conducting polymer-based nanocomposites, including the key factors influencing their morphology regardless of the application. The catalytic performances of mono-, bi-, and tri-metal catalysts deposited on conducting polymer-based supports for the electrooxidation of methanol and ethanol reactions are examined in detail in the second and third parts of this review. We also highlight the effect of the introduction of carbon nanomaterials into conducting polymer supports on the electrical properties and on the performance of the catalysts. Development of anode materials using nanostructured conducting polymers-based support plays a vital role in reducing catalyst loadings and should therefore shed light on the wide-scale commercialization of DAFCs. In a nutshell, this review will give readers a thorough understanding of the principles of direct alcohol fuel cells, new advancements in electrode materials based on non-precious metals, and the main challenges that should be dealt with.

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Section: Binary and Ternary Alloys Supported On Conducting Polymersmentioning

confidence: 99%

Recent Advances in Anode Metallic Catalysts Supported on Conducting Polymer-Based Materials for Direct Alcohol Fuel Cells

et al. 2022

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“…19,20 Platinum (Pt) and Pd based catalysts are widely studied as anode catalysts in DGFCs. 14,18,[21][22][23][24][25][26][27] However, different approaches for non-Pt and -Pd metal catalysts development and prospects have been discussed. Houache et al 28 prepared nickel (Ni) based catalysts for GEOR in alkaline medium and concluded that glyceraldehyde was the main reaction product.…”

mentioning

confidence: 99%

Tuning the Tin Oxide-Carbon Composite Support to Deposit Rh Nanoparticles for Glycerol-to-Carbonate Electro-Conversion

Moreira¹,

Bresciani²,

Kokoh³

et al. 2022

J. Electrochem. Soc.

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The glycerol electrooxidation reaction (GEOR) has been herein investigated on Rh/C and Rh/SnO2-C prepared by polyol method. The particle mean sizes were found to be 2.0 and 1.8 nm in Rh/C and Rh/SnO2-C, respectively. The alloying degree reached 63% in Rh/SnO2-C, confirming a Sn-Rh alloy formation. The activity towards GEOR on Rh/SnO2-C was almost five-fold that of Rh/C, as demonstrated by electrochemical measurements in alkaline medium. This trend indicated the beneficial effect of the SnO2-C carbon-oxide composite support in the catalyst composition. Analysis of the products generated after the bulk electrolysis using high-performance liquid chromatography and Fourier transform infrared spectroscopy demonstrated that at 0.55 V vs. RHE the main reaction products were glycerate ion and carbonate (CO32-). Then, a C-C-C cleavage was demonstrated with the CO32- formation at low potentials. During the testing conducted in a home-made acrylic direct glycerol fuel cell at room temperature in 0.5 mol L-1 NaOH, the maximum power density (390 µW cm-2) obtained on a Rh/SnO2 anode, was five-fold that of Pd/C. These testings demonstrated that the co-generation of sustainable energy and value-added products is a promising way to valorize glycerol.

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“…In a recent study, Pd nanoparticles have been deposited on PEDOT-coated graphite electrodes via electroless deposition, an autocatalytic process where the electrode develops a potential in a plating solution containing different polymerization charges and different doping ions (polystyrene sulfonate (PSS) and dodecyl sulfate). [143] The Pd/PEDOT-PSS catalyst showed a high mass activity for glycerol electro-oxidation in alkaline condition owing to the high specific metal loading, which diminishes with increasing Pd content as a result of impeded access of glycerol or nanoparticles aggregation.…”

Section: Palladium Catalystsmentioning

confidence: 99%

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

Luo

Barrio

Sunny

et al. 2021

Advanced Energy Materials

284

197

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Elevated concentrations of atmospheric greenhouse gases (GHGs), particularly carbon dioxide (CO 2 ), have affected the global environment, causing climate deviations and threatening the biodiversity. [1,2] Deep-cutting solutions and new technologies are thus imperative to repay the carbon debt. [3] Hydrogen (H 2 ) is an ideal fuel to enable a successful transition to a global zero emission economy: With a gravimetric energy density more than double that of conventional fuels like diesel, gasoline, and natural gas it is a lightweight energy carrier which can be converted to electricity and water via fuel cells and thus holds great promise to cut emissions of the transport and energy sectors to zero. Furthermore, it is an energy dense chemical which is already used in the chemical industry (i.e., ammonia via the Haber-Bosch process) and steel manufacturing. However, these industries currently use brown (made from coal via gasification and subsequent water gas shift reaction) and gray (made by steam methane reforming) hydrogen which both have significant CO 2 footprints. Thus, synthesizing green (meaning renewable) hydrogen cost-effectively is a solution which could green such industries and the transport sector and simultaneously meet our growing demands for viable energy storage solutions. However, switching from fossilfuels to a hydrogen economy requires efficient technologies that permit clean, sustainable and cost-effective production, storage, and utilization of H 2 . [4][5][6] Water electrolysis is a clean technology for green H 2 production, where water is split into H 2 at the cathode while O 2 is generated at the anode. Thermodynamically, the energy input required for this reaction equals an applied voltage of 1.23 V but in practice >1.8 V is commonly applied due to the sluggish kinetics of the oxygen evolution reaction (OER). The kinetics of the OER are complex. In addition to the thermodynamic potential of 1.23 V, even the best OER catalysts to date show significant overpotentials (0.35-0.4 V) which is due to suboptimal scaling relation between OOH and OH adsorption energies. [7,8] As a consequence, a significant amount of energy is spent on Biomass is recognized as an ideal CO 2 neutral, abundant, and renewable resource substitute to fossil fuels. The rich proton content in most biomass derived materials, such as ethanol, 5-hydroxymethylfurfural (HMF) and glycerol allows it to be an effective hydrogen carrier. The oxidation derivatives, such as 2,5-difurandicarboxylic acid from HMF, glyceric acid from glycerol are valuable products to be used in biodegradable polymers and pharmaceuticals. Therefore, combining biomass-derived compound oxidation at the anode and hydrogen evolution reaction at the cathode in a biomass electrolysis or photo-reforming reactor would present a promising strategy for coproducing high value chemicals and hydrogen with low energy consumption and CO 2 emissions. This review aims to combine fundamental knowledge on photo and electro-assisted catalysis to provide a comprehensive und...

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Glycerol oxidation on Pd nanocatalysts obtained on PEDOT-coated graphite supports

Cited by 12 publications

References 50 publications

Recent Advances in Anode Metallic Catalysts Supported on Conducting Polymer-Based Materials for Direct Alcohol Fuel Cells

Recent Advances in Anode Metallic Catalysts Supported on Conducting Polymer-Based Materials for Direct Alcohol Fuel Cells

Tuning the Tin Oxide-Carbon Composite Support to Deposit Rh Nanoparticles for Glycerol-to-Carbonate Electro-Conversion

Progress and Perspectives in Photo‐ and Electrochemical‐Oxidation of Biomass for Sustainable Chemicals and Hydrogen Production

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