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Lasse Murtomäki

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Papers by Lasse Murtomäki

Research paper thumbnail of (Digital Presentation) Electrolyte Optimisation for Copper Deposition and Dissolution in Redox Flow Batteries

ECS Meeting Abstracts

Aqueous copper redox flow batteries (CuRFB) based systems offer an alternative, more sustainable,... more Aqueous copper redox flow batteries (CuRFB) based systems offer an alternative, more sustainable, redox flow battery to those based on vanadium for stationary renewable energy storage. Copper is an abundant material (~20 million tonnes/ year), that can be easily recycled and is significantly lower cost (6.5 € kg -1), by comparison with vanadium technology (20 € kg-1)[i]. CuRFBs can also be operated without perfluorinated membranes required in the vanadium redox flow batteries (VRFB). The CuRFB system takes advantage of the three stable oxidation states of copper Cu(0)-Cu(I)–Cu(II) in which the cuprous species are oxidised to cupric species in the positive half-cell and electrochemically deposited as copper on the negative electrode. The electrolyte system investigated in this work is based on chloride salts which are soluble up to 2.5 M[ii] ,[iii] . This concentration level enables high current densities to be achieved assisting with high power delivery. The present study was focuss...

Research paper thumbnail of Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

Research paper thumbnail of Short thermal treatment of carbon felts for copper-based redox flow batteries

Journal of Power Sources, 2022

Research paper thumbnail of Ion transfer in the absence of supporting electrolyte at a microhole supported ITIÈS

Research paper thumbnail of Theory of Cyclic Voltammetry for Reversible and Quasi-reversible Electrodeposition of Insoluable Products

Research paper thumbnail of Surface pressure control during ion transfer across a phospholidid monolayer deposited at the water/1,2-dichloroethane interface

Research paper thumbnail of The Interpretation of Rate Constants of Charge Transfer at the Interface of Immsicible Electrolytes obtained by AC Impedance

Research paper thumbnail of Electron Transfer at the Water//NPOE Interface

Research paper thumbnail of Fundamental Electrochemistry: An interactive e-book with quizes in MyCources learning platform

Research paper thumbnail of Polymeric Ionic Liquids as Electrode Coatings - Studies on Zinc Electrodeposition

Research paper thumbnail of Metal Extraction Driven By Galvani Potential at the Interface Between Two Immiscible Electrolyte Solutions

ECS Meeting Abstracts, 2016

Research paper thumbnail of All‐copper Flow Batteries

Research paper thumbnail of Bipolar membrane electrodialysis of Na2CO3 and industrial green liquor for producing NaOH: A sustainable solution for pulp and paper industries

Chemical Engineering Journal Advances

Research paper thumbnail of Determination of Ionic Diffusion Coefficients in Ion‐Exchange Membranes: Strong Electrolytes and Sulfates with Dissociation Equilibria

ChemElectroChem

Ionic diffusion coefficients in the membrane are needed for the modelling of ion transport in ion... more Ionic diffusion coefficients in the membrane are needed for the modelling of ion transport in ion‐exchange membranes (IEMs) with the Nernst‐Planck equation. We have determined the ionic diffusion coefficients of Na+, OH−, H+, Cl−, SO42−, NaSO4−, and HSO4− from the diffusion experiments of dilute NaCl, NaOH, HCl, Na2SO4, and H2SO4 solutions through IEMs and the membrane conductivity measured in these solutions, using electrochemical impedance spectroscopy. The order of diffusion fluxes across the anion‐exchange membrane is found to be as H2SO4>HCl>NaCl>Na2SO4>NaOH, whereas for the cation‐exchange membrane it was NaOH>NaCl>Na2SO4≥H2SO4. Special attention is given to sulfates because of the partial dissociation of bisulfate and NaSO4−, which makes the use of the Nernst‐Hartley equation, that is, splitting the electrolyte diffusion coefficient into its ionic contributions, impossible. The expression of the diffusion coefficient of sulfates taking into account the disso...

Research paper thumbnail of Measurement of the surface tension between solutions from the video image of a pendant drop (in Finnish)

Research paper thumbnail of Electron Transfer Reactions at the Polarized Liquid/Liquid Interface

Liquid-Liquid Interfaces, 2020

Research paper thumbnail of Double Layer Correction to the Kinetics of Ion Transfer at the ITIES

Research paper thumbnail of Electrocatalysis and electrolysis: Electron transfer reactions at the polarized liquid/liquid interface

Research paper thumbnail of Cofacial porphyrins as bio-inspired oxygen reduction catalysts at the liquid-liquid interface

Research paper thumbnail of Some Remarks about the Double Layer Correction at the ITIES

Research paper thumbnail of (Digital Presentation) Electrolyte Optimisation for Copper Deposition and Dissolution in Redox Flow Batteries

ECS Meeting Abstracts

Aqueous copper redox flow batteries (CuRFB) based systems offer an alternative, more sustainable,... more Aqueous copper redox flow batteries (CuRFB) based systems offer an alternative, more sustainable, redox flow battery to those based on vanadium for stationary renewable energy storage. Copper is an abundant material (~20 million tonnes/ year), that can be easily recycled and is significantly lower cost (6.5 € kg -1), by comparison with vanadium technology (20 € kg-1)[i]. CuRFBs can also be operated without perfluorinated membranes required in the vanadium redox flow batteries (VRFB). The CuRFB system takes advantage of the three stable oxidation states of copper Cu(0)-Cu(I)–Cu(II) in which the cuprous species are oxidised to cupric species in the positive half-cell and electrochemically deposited as copper on the negative electrode. The electrolyte system investigated in this work is based on chloride salts which are soluble up to 2.5 M[ii] ,[iii] . This concentration level enables high current densities to be achieved assisting with high power delivery. The present study was focuss...

Research paper thumbnail of Performance improvements for the all-copper redox flow battery: Membranes, electrodes, and electrolytes

Research paper thumbnail of Short thermal treatment of carbon felts for copper-based redox flow batteries

Journal of Power Sources, 2022

Research paper thumbnail of Ion transfer in the absence of supporting electrolyte at a microhole supported ITIÈS

Research paper thumbnail of Theory of Cyclic Voltammetry for Reversible and Quasi-reversible Electrodeposition of Insoluable Products

Research paper thumbnail of Surface pressure control during ion transfer across a phospholidid monolayer deposited at the water/1,2-dichloroethane interface

Research paper thumbnail of The Interpretation of Rate Constants of Charge Transfer at the Interface of Immsicible Electrolytes obtained by AC Impedance

Research paper thumbnail of Electron Transfer at the Water//NPOE Interface

Research paper thumbnail of Fundamental Electrochemistry: An interactive e-book with quizes in MyCources learning platform

Research paper thumbnail of Polymeric Ionic Liquids as Electrode Coatings - Studies on Zinc Electrodeposition

Research paper thumbnail of Metal Extraction Driven By Galvani Potential at the Interface Between Two Immiscible Electrolyte Solutions

ECS Meeting Abstracts, 2016

Research paper thumbnail of All‐copper Flow Batteries

Research paper thumbnail of Bipolar membrane electrodialysis of Na2CO3 and industrial green liquor for producing NaOH: A sustainable solution for pulp and paper industries

Chemical Engineering Journal Advances

Research paper thumbnail of Determination of Ionic Diffusion Coefficients in Ion‐Exchange Membranes: Strong Electrolytes and Sulfates with Dissociation Equilibria

ChemElectroChem

Ionic diffusion coefficients in the membrane are needed for the modelling of ion transport in ion... more Ionic diffusion coefficients in the membrane are needed for the modelling of ion transport in ion‐exchange membranes (IEMs) with the Nernst‐Planck equation. We have determined the ionic diffusion coefficients of Na+, OH−, H+, Cl−, SO42−, NaSO4−, and HSO4− from the diffusion experiments of dilute NaCl, NaOH, HCl, Na2SO4, and H2SO4 solutions through IEMs and the membrane conductivity measured in these solutions, using electrochemical impedance spectroscopy. The order of diffusion fluxes across the anion‐exchange membrane is found to be as H2SO4>HCl>NaCl>Na2SO4>NaOH, whereas for the cation‐exchange membrane it was NaOH>NaCl>Na2SO4≥H2SO4. Special attention is given to sulfates because of the partial dissociation of bisulfate and NaSO4−, which makes the use of the Nernst‐Hartley equation, that is, splitting the electrolyte diffusion coefficient into its ionic contributions, impossible. The expression of the diffusion coefficient of sulfates taking into account the disso...

Research paper thumbnail of Measurement of the surface tension between solutions from the video image of a pendant drop (in Finnish)

Research paper thumbnail of Electron Transfer Reactions at the Polarized Liquid/Liquid Interface

Liquid-Liquid Interfaces, 2020

Research paper thumbnail of Double Layer Correction to the Kinetics of Ion Transfer at the ITIES

Research paper thumbnail of Electrocatalysis and electrolysis: Electron transfer reactions at the polarized liquid/liquid interface

Research paper thumbnail of Cofacial porphyrins as bio-inspired oxygen reduction catalysts at the liquid-liquid interface

Research paper thumbnail of Some Remarks about the Double Layer Correction at the ITIES

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