3D-printing for electrolytic processes and electrochemical flow systems

Ambrosi, Adriano; Shi, Raymond Rong Sheng; Webster, Richard D.

doi:10.1039/d0ta07939a

Cited by 55 publications

(40 citation statements)

References 125 publications

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“… 20 The use of AM to generate advanced structures that enhance mixing in electrochemical flow systems is gaining attention. 8 , 21 , 22 Indeed, the design of simple structures to improve mixing in parallel plate continuous-flow electroreactors has been recently demonstrated, showcasing the potential of AM to improve the performance of electrochemical transformations under flow conditions. 23 Continuous-flow oscillatory baffled reactors (COBRs) are a specific class of chemical reactors that combine both passive and active mixing: the coupling of periodic constrictions and a mechanically generated oscillatory flow enables the generation of a turbulent flow at low Reynolds ( Re ) numbers.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations

Álvarez

Romero‐Fernández

Iglesias

et al. 2022

ACS Sustainable Chem. Eng.

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Electrochemical continuous-flow reactors offer a great opportunity for enhanced and sustainable chemical syntheses. Here, we present a novel application of electrochemical continuous-flow oscillatory baffled reactors (ECOBRs) that combines advanced mixing features with electrochemical transformations to enable efficient electrochemical oxidations under continuous flow at a millimeter distance between electrodes. Different additive manufacturing techniques have been employed to rapidly fabricate reactors. The electrochemical oxidation of NADH, a very sensitive substrate key for the regeneration of enzymes in biocatalytic transformations, has been employed as a benchmark reaction. The oscillatory conditions improved bulk mixing, facilitating the contact of reagents to electrodes. Under oscillatory conditions, the ECOBR demonstrated improved performance in the electrochemical oxidation of NADH, which is attributed to improved mass transfer associated with the oscillatory regime.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations

Álvarez

Romero‐Fernández

Iglesias

et al. 2022

ACS Sustainable Chem. Eng.

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“…21 The use of AM to generate advanced structures that enhance mixing in electrochemical flow systems is gaining attention. 8,22,23 . Indeed, the design of simple structures to improve mixing in parallel plate continuous-flow electro-reactors has been recently demonstrated, showcasing the potential of AM to improve the performance of electrochemical transformations under flow conditions.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical oscillatory baffled reactors fabricated with additive manufacturing for efficient continuous-flow oxidations

Álvarez

Romero‐Fernández

Iglesias

et al. 2022

Preprint

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“…Interest in innovative 3D printed electrochemical devices continues to grow. 1,2 One of the most important and promising applications is the development of tailored electrochemical flow reactors with enhanced efficiency for electrochemical processing and energy storage and conversion. 3,4 3D printing already offers the possibility of manufacturing fast prototypes 5 and working models of electrochemical flow reactors 6 and electrolysers, 7 enabling their design through a recently proposed cycle of conceptualization, simulation, rapid prototyping and experimental validation.…”

Section: Introductionmentioning

confidence: 99%

Design, imaging and performance of 3D printed open‐cell architectures for porous electrodes: quantification of surface area and permeability

Kaishubayeva

León

Walsh

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND:The development of new open-cell porous electrodes for electrochemical flow cells and reactors is demonstrated through the application of 3D printing. The properties of diverse architectures were investigated, including rectangular, circular, hexagonal and triangular cells with linear porosity grades of 10, 20 and 30 pores per inch (ppi). Specimens were digitally designed, then 3D printed in stainless steel via selective laser melting. After being examined using scanning electron microscopy, they were characterized in terms of volumetric surface area and porosity with the aid of X-ray computed tomography. Pressure drop measurements were performed over a range of mean linear velocity and Reynolds number, allowing the estimation of Darcy's friction factor and permeability.RESULTS: Volumetric surface area estimated from tomography scans was ≤36% higher than the nominal values owing to surface roughness and post-processing algorithms. By contrast, volumetric porosity obtained by tomography agreed fully with measured values. Triangular architectures afforded additional surface area both digitally and according to tomography. The largest pressure drop was found in circular materials, the triangular ones showing the lowest. The 20 ppi triangular architecture had a volumetric surface area of ≈44.5 cm −1 and a permeability of 2.31 × 10 −5 cm 2 . CONCLUSION: Triangular architectures were preferred as a consequence of their favourable combination of high surface area and high permeability with low mass and reduced digital complexity. This provides a strategy to initiate the optimization of 3D printed porous electrodes for electrochemical flow cells and reactors in novel and niche applications.

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3D-printing for electrolytic processes and electrochemical flow systems

Abstract: Overview of the use of 3D printing manufacturing methods to fabricate electrolytic and electrochemical flow systems.

Cited by 55 publications

References 125 publications

Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations

Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations

Electrochemical oscillatory baffled reactors fabricated with additive manufacturing for efficient continuous-flow oxidations

Design, imaging and performance of 3D printed open‐cell architectures for porous electrodes: quantification of surface area and permeability

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