Aaron T. Marshall

MacDiarmid Institute for Advanced Materials and Nanotechnology

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N.A. Hampson

Loughborough University

Reidar Tunold

Norwegian University of Science and Technology

Matthew J. Watson

University of Canterbury

Mikhail Tsypkin

Norwegian University of Science and Technology

Catherine M. Bishop

University of Canterbury

R. Haverkamp

Massey University

B. Børresen

Equinor (Norway)

G. Hägen

Norwegian University of Science and Technology

Vladimir B. Golovko

MacDiarmid Institute for Advanced Materials and Nanotechnology

Samuel Martín-Treceño

University of Canterbury

Cooperative Institutions

University of Canterbury

MacDiarmid Institute for Advanced Materials and Nanotechnology

New York University Press

University of Wollongong

University of Auckland

Victoria University of Wellington

Loughborough University

University of Cambridge

Norwegian University of Science and Technology

University of Glasgow

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A review on sustainable recycling technologies for lithium-ion batteries

Emergent Materials (2021)

Zain Abdool Kader Aaron T. Marshall J. Kennedy

Environmental Pollution

Hydrometallurgy

Pyrometallurgy

Resource Depletion

10.1007/s42247-021-00201-w

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Citations (49)

Nanocrystalline Oxides as Oxygen Evolution Electrocatalysts for PEM Water Electrolysis

Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) (2006)

Aaron T. Marshall B. Børresen G. Hägen Mikhail Tsypkin Reidar Tunold

Abstract not Available.

Nanocrystalline material

Oxygen evolution

Electrolysis of water

10.1149/ma2005-01/42/1615

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Citations (0)

Understanding the Hydrogen and Oxygen Evolution Reactions through Microkinetic Models

ECS Transactions (2018)

Aaron T. Marshall Alfred Herritsch

Micro-kinetic models for hydrogen and oxygen evolution reactions are developed. From these it is shown that the traditional approach involving the use of the quasi-equilibrium assumption can fail to predict the correct electrode behaviour. Using these models, it is also shown that identical polarisation curves can be generated from multiple sets of kinetic parameters. Clearly, a steady-state polarisation curve is insufficient to completely characterize an electrodes kinetics. However, by simulating dynamic electrode response (e.g. a potential step experiment), differences in behaviour between the sets of kinetic parameters can be observed.

Oxygen evolution

10.1149/08511.0121ecst

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Citations (7)

Turning copper into gold — Tuning a gas diffusion electrode catalyst for the efficient conversion of CO2 to C2H

Electrochimica Acta (2023)

Alexander R. Heenan Shailendra Kumar Sharma Aaron T. Marshall

Copper is regarded as a unique electrocatalyst for the CO2 reduction reaction as it is able to produce products that require more than two electrons, such as C2H4 and C2H5OH. When combined with the high activity of a gas diffusion electrode, copper becomes a great choice of catalyst for the CO2 reduction reaction, however, it has a history of poor selectivity for a given product. In this work, we have synthesised a CuO electrocatalyst that has typical copper-like selectivity initially, however, as we tune the Nafion loading, we are able to shift the selectivity towards that of a gold-based catalyst. We propose that this is due to the Nafion providing an in-penetrable barrier to the electrolyte that prevents the catalyst from being flooded, which is supported by electrochemical, XAS, and TEM analysis.

Nafion

10.1016/j.electacta.2023.143097

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Using microkinetic models to understand electrocatalytic reactions

Current Opinion in Electrochemistry (2017)

Aaron T. Marshall

10.1016/j.coelec.2017.10.024

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Citations (44)

Electrochemical Study on the Reduction of Si and Ti from Molten TiO₂ - SiO₂ - Al₂O₃ - MgO - CaO Slag

Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) (2020)

Samuel Martín-Treceño Antoine Allanore Catherine M. Bishop Aaron T. Marshall Matthew J. Watson

Recently, the electrochemical recovery of metals from molten TiO 2 - SiO 2 - Al 2 O 3 - MgO - CaO slag has been proven feasible. The use of the largest by-product of the ironmaking process as an electrolyte has the potential of producing titanium metal in a more sustainable and environmentally friendly manner than the current Kroll process. However, a more extensive understanding of the electrochemical behaviour of this complex oxide system in its molten state is paramount for the design of industrial electrolytic cells. In this work, we present the results from molten oxide electrolysis experiments performed above 1500 °C, and we discuss the effect of the experimental processing conditions on the reduction of Si and Ti ions from the melt.

Slag (welding)

Electrolytic process

Titanium oxide

10.1149/ma2020-02151415mtgabs

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Citations (1)

Improving the Stability of DSA Electrodes by the Addition of TiO₂Nanoparticles

Journal of The Electrochemical Society (2019)

Asadollah Kariman Aaron T. Marshall

Dimensionally stable anodes (DSA) are widely used in water electrolysis, cathodic protection, wastewater treatment, metal electrowinning and chlor-alkali industry. An important parameter of these anodes is their lifetime under harsh anodic conditions. In this work, the incorporation of TiO2 nanoparticles into a thermally prepared IrO2 anode as a way of improving its service lifetime was investigated. The results show that incorporation of up to 25 wt% TiO2 nanoparticles into the coating formed crack-free structure during the thermal decomposition process and thus enhances the service lifetime of modified electrode dramatically by up to 10x compared to the pure IrO2 anode. Importantly, these nanoparticle additions have minimal effect of the anodes performance toward the oxygen evolution reaction. Further addition of TiO2 nanoparticles reduced the lifetime of the anode due to uneven distribution of the active coating over the substrate leading to electrolyte penetration to, and passivation of, the underlying titanium substrate. It is proposed that adding the right quantity of nanoparticles into the IrO2 layer improved the anodes lifetime by minimising electrolyte penetration to the substrate while increasing the mechanical strength of the layer.

Passivation

10.1149/2.0761908jes

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Citations (34)

Materials for Electrocatalysis of Oxygen Evolution in PEM Water Electrolysis

Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM) (2009)

Reidar Tunold Aaron T. Marshall Egil Rasten Mikhail Tsypkin Lars-Erik Owe

Abstract not Available.

Electrolysis of water

Oxygen evolution

10.1149/ma2009-02/40/3033

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