Decoration of N-functionalized graphene nanoflakes with copper-based nanoparticles for high selectivity CO2 electroreduction towards formate

Legrand, Ulrich; Boudreault, Richard; Meunier, Jean‐Luc

doi:10.1016/j.electacta.2019.06.074

Cited by 23 publications

(12 citation statements)

References 26 publications

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“…The nitrogen in the catalyst adjacent to the carbon atoms allow a polarization that can provide active sites close to Cu, allowing the intermediates to stabilize and then obtain ethanol as the majority product with an FE of 63% at −1.2 V vs. RHE, but with a relatively low current density (2 mA/cm 2 at −1.2 V vs. RHE). Recently Legrand and co-workers [189] used graphene nanoflakes (GNFs), which were synthesized by means of thermal plasma method to disperse copper nanoparticles. However, the nanoparticles were not homogeneously distributed due to the hydrophobicity of the nanostructure of the GNFs.…”

Section: Metal Nanoparticles Supported On Carbon-based Materials (M-nps-c)mentioning

confidence: 99%

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

et al. 2021

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The global warming and the dangerous climate change arising from the massive emission of CO2 from the burning of fossil fuels have motivated the search for alternative clean and sustainable energy sources. However, the industrial development and population necessities make the decoupling of economic growth from fossil fuels unimaginable and, consequently, the capture and conversion of CO2 to fuels seems to be, nowadays, one of the most promising and attractive solutions in a world with high energy demand. In this respect, the electrochemical CO2 conversion using renewable electricity provides a promising solution. However, faradaic efficiency of common electro-catalysts is low, and therefore, the design of highly selective, energy-efficient, and cost-effective electrocatalysts is critical. Carbon-based materials present some advantages such as relatively low cost and renewability, excellent electrical conductivity, and tunable textural and chemical surface, which show them as competitive materials for the electro-reduction of CO2. In this review, an overview of the recent progress of carbon-based electro-catalysts in the conversion of CO2 to valuable products is presented, focusing on the role of the different carbon properties, which provides a useful understanding for the materials design progress in this field. Development opportunities and challenges in the field are also summarized.

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Section: Metal Nanoparticles Supported On Carbon-based Materials (M-nps-c)mentioning

confidence: 99%

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

et al. 2021

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“…It must be pointed out that N-doping occurred at carbon matrixes originated from Chlorella vulgaris, which underwent thermal degradation. Direct N-doping of graphene sheets is much less feasible since that sort of N-substitution occurs in much more severe experimental conditions [76,77]. HRTEM tests proved that this N-doped carbon matter was present as domains among well split graphene flakes (electroexfoliation).…”

Section: Rechargeable Zn-air Battery Testsmentioning

confidence: 99%

Improving the Performance of Zn-Air Batteries with N-Doped Electroexfoliated Graphene

et al. 2020

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The constantly growing demand for active, durable, and low-cost electrocatalysts usable in energy storage devices, such as supercapacitors or electrodes in metal-air batteries, has triggered the rapid development of heteroatom-doped carbon materials, which would, among other things, exhibit high catalytic activity in the oxygen reduction reaction (ORR). In this article, a method of synthesizing nitrogen-doped graphene is proposed. Few-layered graphene sheets (FL-graphene) were prepared by electrochemical exfoliation of commercial graphite in a Na2SO4 electrolyte with added calcium carbonate as a separator of newly-exfoliated FL-graphene sheets. Exfoliated FL-graphene was impregnated with a suspension of green algae used as a nitrogen carrier. Impregnated FL-graphene was carbonized at a high temperature under the flow of nitrogen. The N-doped FL-graphene was characterized through instrumental methods: high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy. Electrochemical performance was determined using cyclic voltamperometry and linear sweep voltamperometry to check catalytic activity in ORR. The N-doped electroexfoliated FL-graphene obeyed the four-electron transfer pathways, leading us to further test these materials as electrode components in rechargeable zinc-air batteries. The obtained results for Zn-air batteries are very important for future development of industry, because the proposed graphene electrode materials do not contain any heavy and noble metals in their composition.

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“…The review of graphene-based materials for electrochemical CO 2 reduction was published by Ma et al recently [36]. Several recent studies show that the modification of the graphene surface by copper nanoparticles or by creating Cu-contained heterostructures is an interesting approach in the development of efficient electrocatalysts [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51] .…”

Section: Introductionmentioning

confidence: 99%

CO2 and CH2 Adsorption on Copper-Decorated Graphene: Predictions from First Principle Calculations

et al. 2022

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Single-layer graphene decorated with monodisperse copper nanoparticles can support the size and mass-dependent catalysis of the selective electrochemical reduction of CO2 to ethylene (C2H4). In this study, various active adsorption sites of nanostructured Cu-decorated graphene have been calculated by using density functional theory to provide insight into its catalytic activity toward carbon dioxide electroreduction. Based on the results of our calculations, an enhanced adsorption of the CO2 molecule and CH2 counterpart placed atop of Cu-decorated graphene compared to adsorption at pristine Cu metal surfaces was predicted. This approach explains experimental observations for carbon-based catalysts that were found to be promising for the two-electron reduction reaction of CO2 to CO and, further, to ethylene. Active adsorption sites that lead to a better catalytic activity of Cu-decorated graphene, with respect to general copper catalysts, were identified. The atomic configuration of the most selective CO2 toward the reduction reaction nanostructured catalyst is suggested.

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Decoration of N-functionalized graphene nanoflakes with copper-based nanoparticles for high selectivity CO2 electroreduction towards formate

Cited by 23 publications

References 26 publications

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

From CO2 to Value-Added Products: A Review about Carbon-Based Materials for Electro-Chemical CO2 Conversion

Improving the Performance of Zn-Air Batteries with N-Doped Electroexfoliated Graphene

CO2 and CH2 Adsorption on Copper-Decorated Graphene: Predictions from First Principle Calculations

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