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Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte (2024)
Journal Article
Dimogiannis, K., Sankowski, A., Holc, C., Parmenter, C. D., Newton, G. N., Walsh, D. A., …Johnson, L. R. (2024). Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte. Energy Storage Materials, 67, Article 103280. https://doi.org/10.1016/j.ensm.2024.103280

The volumetric energy density of magnesium exceeds that of lithium, making magnesium batteries particularly promising for next-generation energy storage. However, electrochemical cycling of magnesium electrodes in common battery electrolytes is coulo... Read More about Structure and chemical composition of the Mg electrode during cycling in a simple glyme electrolyte.

A lithium-air battery and gas handling system demonstrator (2023)
Journal Article
Jordan, J. W., Vailaya, G., Holc, C., Jenkins, M., McNulty, R. C., Puscalau, C., …Johnson, L. R. (2024). A lithium-air battery and gas handling system demonstrator. Faraday Discussions, 248, 381-391. https://doi.org/10.1039/d3fd00137g

The lithium-air (Li-air) battery offers one of the highest practical specific energy densities of any battery system at >400 W h kgsystem−1. The practical cell is expected to operate in air, which is flowed into the positive porous electrode where it... Read More about A lithium-air battery and gas handling system demonstrator.

Hydroperoxide-Mediated Degradation of Acetonitrile in the Lithium–Air Battery (2023)
Journal Article
McNulty, R. C., Jones, K. D., Holc, C., Jordan, J. W., Bruce, P. G., Walsh, D. A., …Johnson, L. R. (2023). Hydroperoxide-Mediated Degradation of Acetonitrile in the Lithium–Air Battery. Advanced Energy Materials, 13(3), Article 2300579. https://doi.org/10.1002/aenm.202300579

Understanding and eliminating degradation of the electrolyte solution is arguably the major challenge in the development of high energy density lithium–air batteries. The use of acetonitrile provides cycle stability comparable to current state-of-the... Read More about Hydroperoxide-Mediated Degradation of Acetonitrile in the Lithium–Air Battery.

Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes (2023)
Journal Article
Jordan, J. W., Mortiboy, B., Khlobystov, A. N., Johnson, L. R., Newton, G. N., & Walsh, D. A. (2023). Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes. Journal of the American Chemical Society, 145(16), 9052–9058. https://doi.org/10.1021/jacs.3c00554

Understanding ion transport in solid materials is crucial in the design of electrochemical devices. Of particular interest in recent years is the study of ion transport across 2-dimensional, atomically thin crystals. In this contribution, we describe... Read More about Voltammetric Evidence of Proton Transport through the Sidewalls of Single-Walled Carbon Nanotubes.

Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response (2022)
Journal Article
Wadge, M. D., Bird, M. A., Sankowski, A., Constantin, H., Fay, M. W., Cooper, T. P., …Grant, D. M. (2023). Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response. Advanced Materials Interfaces, 10(5), Article 2201523. https://doi.org/10.1002/admi.202201523

This study describes the chemical conversion and heat treatment of Ti6Al4V microspheres (Ti6_MS), and the resulting effects on their electrocatalytic properties. The wet-chemical conversion (5.0m NaOH, 60°C, 24h; Sample label: Ti6_TC) converts the to... Read More about Nanostructured, Alkaline Titanate‐Converted, and Heat‐Treated Ti6Al4V Microspheres via Wet‐Chemical Alkaline Modification and their ORR Electrocatalytic Response.

Redox-active hierarchical assemblies of hybrid polyoxometalate nanostructures at carbon surfaces (2022)
Journal Article
Amin, S. S., Cameron, J. M., Cousins, R. B., Wrigley, J., Liirò-Peluso, L., Sans, V., …Newton, G. N. (2022). Redox-active hierarchical assemblies of hybrid polyoxometalate nanostructures at carbon surfaces. Inorganic Chemistry Frontiers, 9(8), 1777-1784. https://doi.org/10.1039/d2qi00174h

The self-assembly of hierarchical nanostructures on surfaces is a promising strategy for the development of a wide range of new technologies, such as energy-storage devices and sensors. In this work we show that amphiphilic, organofunctionalized hybr... Read More about Redox-active hierarchical assemblies of hybrid polyoxometalate nanostructures at carbon surfaces.

Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations (2022)
Journal Article
Alvarez, E., Romero-Fernandez, M., Iglesias, D., Martinez-Cuenca, R., Okafor, O., Delorme, A., …Sans, V. (2022). Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations. ACS Sustainable Chemistry and Engineering, 10(7), 2388-2396. https://doi.org/10.1021/acssuschemeng.1c06799

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 m... Read More about Electrochemical Oscillatory Baffled Reactors Fabricated with Additive Manufacturing for Efficient Continuous-Flow Oxidations.

Stabilization of Polyoxometalate Charge Carriers via Redox‐Driven Nanoconfinement in Single‐Walled Carbon Nanotubes (2022)
Journal Article
Jordan, J. W., Cameron, J. M., Lowe, G. A., Rance, G. A., Fung, K. L. Y., Johnson, L. R., …Newton, G. N. (2022). Stabilization of Polyoxometalate Charge Carriers via Redox‐Driven Nanoconfinement in Single‐Walled Carbon Nanotubes. Angewandte Chemie International Edition, 61(8), Article e202115619. https://doi.org/10.1002/anie.202115619

We describe the preparation of hybrid redox materials based on polyoxomolybdates encapsulated within single-walled carbon nanotubes (SWNTs). Polyoxomolybdates readily oxidize SWNTs under ambient conditions in solution, and here we study their charge-... Read More about Stabilization of Polyoxometalate Charge Carriers via Redox‐Driven Nanoconfinement in Single‐Walled Carbon Nanotubes.

Stabilization of Polyoxometalate Charge Carriers via Redox‐Driven Nanoconfinement in Single‐Walled Carbon Nanotubes (2022)
Journal Article
Jordan, J. W., Cameron, J. M., Lowe, G. A., Rance, G. A., Fung, K. L. Y., Johnson, L. R., …Newton, G. N. (2022). Stabilization of Polyoxometalate Charge Carriers via Redox‐Driven Nanoconfinement in Single‐Walled Carbon Nanotubes. Angewandte Chemie, 134(8), Article e202115619. https://doi.org/10.1002/ange.202115619

We describe the preparation of hybrid redox materials based on polyoxomolybdates encapsulated within single-walled carbon nanotubes (SWNTs). Polyoxomolybdates readily oxidize SWNTs under ambient conditions in solution, and here we study their charge-... Read More about Stabilization of Polyoxometalate Charge Carriers via Redox‐Driven Nanoconfinement in Single‐Walled Carbon Nanotubes.

Organic–Inorganic Hybrid Polyoxotungstates As Configurable Charge Carriers for High Energy Redox Flow Batteries (2021)
Journal Article
Peake, C. L., Kibler, A. J., Newton, G. N., & Walsh, D. A. (2021). Organic–Inorganic Hybrid Polyoxotungstates As Configurable Charge Carriers for High Energy Redox Flow Batteries. ACS Applied Energy Materials, 4(9), 8765-8773. https://doi.org/10.1021/acsaem.1c00800

We describe the synthesis and electrochemical analysis of the phenyl siloxane-hybridized phosphotungstate Keggin-type polyoxometalate (POM) TBA3[PW11O39(SiC6H5)2O] (TBA3W11SiPh) and its performance as the charge carrier in nonaqueous redox flow batte... Read More about Organic–Inorganic Hybrid Polyoxotungstates As Configurable Charge Carriers for High Energy Redox Flow Batteries.

Electrochemistry of redox-active molecules confined within narrow carbon nanotubes (2021)
Journal Article
Jordan, J. W., Townsend, W. J. V., Johnson, L. R., Walsh, D. A., Newton, G. N., & Khlobystov, A. N. (2021). Electrochemistry of redox-active molecules confined within narrow carbon nanotubes. Chemical Society Reviews, 50(19), 10895-10916. https://doi.org/10.1039/d1cs00478f

Confinement of molecules within nanocontainers can be a powerful tool for controlling the states of guest-molecules, tuning properties of host-nanocontainers and triggering the emergence of synergistic properties within the host–guest systems. Among... Read More about Electrochemistry of redox-active molecules confined within narrow carbon nanotubes.

Molecular redox species for next-generation batteries (2021)
Journal Article
Cameron, J. M., Holc, C., Kibler, A. J., Peake, C. L., Walsh, D. A., Newton, G. N., & Johnson, L. R. (2021). Molecular redox species for next-generation batteries. Chemical Society Reviews, 50(10), 5863-5883. https://doi.org/10.1039/d0cs01507e

This Tutorial Review describes how the development of dissolved redox-active molecules is beginning to unlock the potential of three of the most promising ‘next-generation’ battery technologies – lithium–air, lithium–sulfur and redox-flow batteries.... Read More about Molecular redox species for next-generation batteries.

2021 roadmap on lithium sulfur batteries (2021)
Journal Article
Robinson, J. B., Xi, K., Kumar, R. V., Ferrari, A. C., Au, H., Titirici, M., …Shearing, P. R. (2021). 2021 roadmap on lithium sulfur batteries. Journal of Physics: Energy, 3(3), Article 031501. https://doi.org/10.1088/2515-7655/abdb9a

Batteries that extend performance beyond the intrinsic limits of Li-ion batteries are among the most important developments required to continue the revolution promised by electrochemical devices. Of these next-generation batteries, lithium sulfur (L... Read More about 2021 roadmap on lithium sulfur batteries.

Gel-Polymer Electrolytes Based on Poly(Ionic Liquid)/Ionic Liquid Networks (2020)
Journal Article
Sen, S., Goodwin, S. E., Barbará, P. V., Rance, G. A., Wales, D., Cameron, J. M., …Walsh, D. A. (2021). Gel-Polymer Electrolytes Based on Poly(Ionic Liquid)/Ionic Liquid Networks. ACS Applied Polymer Materials, 3(1), 200-208. https://doi.org/10.1021/acsapm.0c01042

The use of electrically charged, polymerized ionic liquids (polyILs) offers opportunities for the development of gel-polymer electrolytes (GPEs), but the rational design of such systems is in its infancy. In this work, we compare the properties of po... Read More about Gel-Polymer Electrolytes Based on Poly(Ionic Liquid)/Ionic Liquid Networks.

Functionalization of Carbon Surfaces Tunes the Redox Stability of Polyoxometalate@Carbon Electrodes (2020)
Journal Article
Mughal, N. S., Walsh, D. A., & Newton, G. N. (2020). Functionalization of Carbon Surfaces Tunes the Redox Stability of Polyoxometalate@Carbon Electrodes. ACS Applied Energy Materials, 3(12), 12308-12315. https://doi.org/10.1021/acsaem.0c02360

The use of redox-active polyoxometalates (POMs) offers unique opportunities for the development of advanced functional materials, but the use of such systems is often limited by their instability in operando. To enhance the functional stability of PO... Read More about Functionalization of Carbon Surfaces Tunes the Redox Stability of Polyoxometalate@Carbon Electrodes.

Redox?Active Hybrid Polyoxometalate?Stabilised Gold Nanoparticles (2020)
Journal Article
Martin, C., Kastner, K., Cameron, J. M., Hampson, E., Alves Fernandes, J., Gibson, E. K., …Newton, G. N. (2020). Redox‐Active Hybrid Polyoxometalate‐Stabilised Gold Nanoparticles. Angewandte Chemie International Edition, 59(34), 14331-14335. https://doi.org/10.1002/anie.202005629

We report the design and preparation of multifunctional hybrid nanomaterials through the stabilization of gold nanoparticles with thiol‐functionalised hybrid organic–inorganic polyoxometalates (POMs). The covalent attachment of the hybrid POM forms n... Read More about Redox?Active Hybrid Polyoxometalate?Stabilised Gold Nanoparticles.

Best Practice for Evaluating Electrocatalysts for Hydrogen Economy (2020)
Journal Article
Bird, M. A., Goodwin, S. E., & Walsh, D. A. (2020). Best Practice for Evaluating Electrocatalysts for Hydrogen Economy. ACS Applied Materials and Interfaces, 12(18), 20500-20506. https://doi.org/10.1021/acsami.0c03307

Screening new electrocatalysts is key to the development of new materials for next-generation energy devices such as fuel cells and electrolysers. The counter electrodes used in such tests are often made from materials such as Pt and Au, which can di... Read More about Best Practice for Evaluating Electrocatalysts for Hydrogen Economy.

Host–Guest Hybrid Redox Materials Self‐Assembled from Polyoxometalates and Single‐Walled Carbon Nanotubes (2019)
Journal Article
Jordan, J. W., Lowe, G. A., McSweeney, R. L., Stoppiello, C. T., Lodge, R. W., Skowron, S. T., …Khlobystov, A. N. (2019). Host–Guest Hybrid Redox Materials Self‐Assembled from Polyoxometalates and Single‐Walled Carbon Nanotubes. Advanced Materials, 31(41), Article 1904182. https://doi.org/10.1002/adma.201904182

The development of next‐generation molecular‐electronic, electrocatalytic, and energy‐storage systems depends on the availability of robust materials in which molecular charge‐storage sites and conductive hosts are in intimate contact. It is shown he... Read More about Host–Guest Hybrid Redox Materials Self‐Assembled from Polyoxometalates and Single‐Walled Carbon Nanotubes.

Efficient Electrocatalytic CO2 Reduction Driven by Ionic Liquid Buffer‐Like Solutions (2019)
Journal Article
Goncalves, W. D. G., Zanatta, M., Simon, N. M., Rutzen, L. M., Walsh, D. A., & Dupont, J. (2019). Efficient Electrocatalytic CO2 Reduction Driven by Ionic Liquid Buffer‐Like Solutions. ChemSusChem, 12(18), 4170-4175. https://doi.org/10.1002/cssc.201901076

We show here that electrocatalysis of CO2 reduction in aqueous electrolytes containing the ionic liquid (IL) 1-n-butyl-2,3dimethylimidazolium acetate ([BMMIm][OAc]) and dimethyl sulfoxide (DMSO) proceeds at low overpotentials (−0.9 V vs. Ag/AgCl) at... Read More about Efficient Electrocatalytic CO2 Reduction Driven by Ionic Liquid Buffer‐Like Solutions.

Tuning the Reactivity of TEMPO during Electrocatalytic Alcohol Oxidations in Room-Temperature Ionic Liquids (2019)
Journal Article
Delorme, A. E., Sans, V., Licence, P., & Walsh, D. A. (2019). Tuning the Reactivity of TEMPO during Electrocatalytic Alcohol Oxidations in Room-Temperature Ionic Liquids. ACS Sustainable Chemistry and Engineering, 7(13), 11691-11699. https://doi.org/10.1021/acssuschemeng.9b01823

2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) is a promising, sustainable, metal-free mediator for oxidation of alcohols. In this contribution, we describe how the selectivity of TEMPO for electrocatalytic alcohol oxidations in room-temperature ionic... Read More about Tuning the Reactivity of TEMPO during Electrocatalytic Alcohol Oxidations in Room-Temperature Ionic Liquids.

The nature of proton shuttling in protic ionic liquid fuel cells (2019)
Journal Article
Smith, D. E., & Walsh, D. A. (2019). The nature of proton shuttling in protic ionic liquid fuel cells. Advanced Energy Materials, 9(24), Article 1900744. https://doi.org/10.1002/aenm.201900744

It has been proposed previously that protic ionic liquids (PILs) such as diethylmethylammonium triflate could be used as the electrolytes in nonhumidified, intermediate temperature H2 fuel cells, potentially offering the prospect of high conductivity... Read More about The nature of proton shuttling in protic ionic liquid fuel cells.

Valorization of lignin waste: high electrochemical capacitance of lignin-derived carbons in aqueous and ionic liquid electrolytes (2018)
Journal Article
Sangchoom, W., Walsh, D. A., & Mokaya, R. (2018). Valorization of lignin waste: high electrochemical capacitance of lignin-derived carbons in aqueous and ionic liquid electrolytes. Journal of Materials Chemistry A, 6(38), (18701-18711). doi:10.1039/c8ta07632d. ISSN 2050-7488

This report describes the utilization of waste lignin-derived activated carbons (LACs) as high-energy/high-power electrode materials for electric double layer capacitors(EDLCs). The influence of carbon-pore structure on the capacitance of the LACs in... Read More about Valorization of lignin waste: high electrochemical capacitance of lignin-derived carbons in aqueous and ionic liquid electrolytes.

An ultra-high vacuum electrochemical/mass spectrometry study of anodic decomposition of a protic ionic liquid (2018)
Journal Article
Goodwin, S., Gibson, J., Jones, R., & Walsh, D. A. (2018). An ultra-high vacuum electrochemical/mass spectrometry study of anodic decomposition of a protic ionic liquid. Electrochemistry Communications, 90, https://doi.org/10.1016/j.elecom.2018.04.013

Protic ionic liquids (PILs) are ionic liquids that are formed by proton transfer from Brønsted acids to Brønsted bases, and which are being proposed for use in a wide range of electrochemical devices. In this contribution, we describe electrolysis of... Read More about An ultra-high vacuum electrochemical/mass spectrometry study of anodic decomposition of a protic ionic liquid.

Sulfonylative and azidosulfonylative cyclizations by visible-light-photosensitization of sulfonyl azides in THF (2017)
Journal Article
Zhu, S., Pathigoolla, A., Lowe, G., Walsh, D. A., Cooper, M., Lewis, W., & Lam, H. W. (2017). Sulfonylative and azidosulfonylative cyclizations by visible-light-photosensitization of sulfonyl azides in THF. Chemistry - A European Journal, 23(69), https://doi.org/10.1002/chem.201704380

The generation of sulfonyl radicals from sulfonyl azides using visible light and a photoactive iridium complex in THF is described. This process was used to promote sulfonylative and azidosulfonylative cyclizations of enynes to give several classes o... Read More about Sulfonylative and azidosulfonylative cyclizations by visible-light-photosensitization of sulfonyl azides in THF.

The contrasting effects of diethylmethylamine during reduction of protons and oxidation of formic acid in diethylmethylammonium-based protic ionic liquids (2017)
Journal Article
Goodwin, S., Muhammad, S., Tuan, L., & Walsh, D. (2018). The contrasting effects of diethylmethylamine during reduction of protons and oxidation of formic acid in diethylmethylammonium-based protic ionic liquids. Journal of Electroanalytical Chemistry, 819, https://doi.org/10.1016/j.jelechem.2017.10.021

Ionic liquids are formally defined as liquids that consist entirely of ions, and which are liquid below 100 C. As these liquids are being proposed for use in a range of electrochemical devices and applications, understanding the electrochemical beha... Read More about The contrasting effects of diethylmethylamine during reduction of protons and oxidation of formic acid in diethylmethylammonium-based protic ionic liquids.

Electroanalysis of neutral precursors in protic ionic liquids and synthesis of high-ionicity ionic liquids (2017)
Journal Article
Sean, G., Daniel, S., Joshua, G., Jones, R., & Walsh, D. A. (in press). Electroanalysis of neutral precursors in protic ionic liquids and synthesis of high-ionicity ionic liquids. Langmuir, 33(34), https://doi.org/10.1021/acs.langmuir.7b02294

Protic ionic liquids (PILs) are ionic liquids that are formed by transferring protons from Brønsted acids to Brønsted bases. While they nominally consist entirely of ions, PILs can often behave as though they contain a significant amount of neutral... Read More about Electroanalysis of neutral precursors in protic ionic liquids and synthesis of high-ionicity ionic liquids.

Closed bipolar electrodes for spatial separation of H2 and O2 evolution during water electrolysis and the development of high-voltage fuel cells (2017)
Journal Article
Goodwin, S., & Walsh, D. A. (2017). Closed bipolar electrodes for spatial separation of H2 and O2 evolution during water electrolysis and the development of high-voltage fuel cells. ACS Applied Materials and Interfaces, 9(28), 23654-23661. https://doi.org/10.1021/acsami.7b04226

Electrolytic water splitting could potentially provide clean H2 for a future ‘Hydrogen Economy.’ However, as H2 and O2 are produced in close proximity to each other in water electrolysers, mixing of the gases can occur during electrolysis, with pote... Read More about Closed bipolar electrodes for spatial separation of H2 and O2 evolution during water electrolysis and the development of high-voltage fuel cells.

Conducting Polymer Nanocomposite-Based Supercapacitors (2016)
Book Chapter
Liew, S. Y., Walsh, D. A., & Chen, G. Z. (2016). Conducting Polymer Nanocomposite-Based Supercapacitors. In V. Kumar, S. Kalia, & H. C. Swart (Eds.), Conducting polymer hybrids (269-304). Springer International Publishing. https://doi.org/10.1007/978-3-319-46458-9_9

The use of nanocomposites of electronically-conducting polymers for supercapacitors has increased significantly over the past years, due to their high capacitances and abilities to withstand many charge-discharge cycles. We have recently been investi... Read More about Conducting Polymer Nanocomposite-Based Supercapacitors.

Extremely Stable Platinum-Amorphous Carbon Electrocatalyst within Hollow Graphitized Carbon Nanofibers for the Oxygen Reduction Reaction (2016)
Journal Article
Gimenez-Lopez, M. D. C., Kurtoglu, A., Walsh, D. A., & Khlobystov, A. N. (2016). Extremely Stable Platinum-Amorphous Carbon Electrocatalyst within Hollow Graphitized Carbon Nanofibers for the Oxygen Reduction Reaction. Advanced Materials, 28(41), 9103-9108. https://doi.org/10.1002/adma.201602485

Unprecedented electrochemical stabilization of platinum nanoparticles (PtNPs) is presented, upon insertion into shortened hollow graphitized carbon nanofibers (PtNP@S-GNF) toward the oxygen-reduction reaction for fuel-cell applications. In contrast t... Read More about Extremely Stable Platinum-Amorphous Carbon Electrocatalyst within Hollow Graphitized Carbon Nanofibers for the Oxygen Reduction Reaction.

Bridging the performance gap between electric double-layer capacitors and batteries with high-energy/high-power carbon nanotube-based electrodes (2016)
Journal Article
Matabosch Coromina, H., Adeniran, B., Mokaya, R., & Walsh, D. A. (2016). Bridging the performance gap between electric double-layer capacitors and batteries with high-energy/high-power carbon nanotube-based electrodes. Journal of Materials Chemistry A, 4(38), 14586-14594. https://doi.org/10.1039/c6ta05686e

Electric double-layer capacitors (EDLCs) store electrical energy at the interface between charged electrodes and electrolytes and are higher-power devices than batteries. However, the amount of energy stored in EDLCs cannot compete with that in batte... Read More about Bridging the performance gap between electric double-layer capacitors and batteries with high-energy/high-power carbon nanotube-based electrodes.

Hydrogen Electrooxidation under Conditions of High Mass Transport in Room-Temperature Ionic Liquids and the Role of Underpotential-Deposited Hydrogen (2016)
Journal Article
Goodwin, S. E., & Walsh, D. A. (2016). Hydrogen Electrooxidation under Conditions of High Mass Transport in Room-Temperature Ionic Liquids and the Role of Underpotential-Deposited Hydrogen. Journal of Physical Chemistry C, 120(21), 11498-11507. https://doi.org/10.1021/acs.jpcc.6b01592

The hydrogen oxidation reaction (HOR), an electrocatalytic reaction of fundamental and applied interest, was studied in the protic ionic liquid (PIL) diethylmethylammonium trifluoromethanesulfonate, [dema][TfO], at Pt electrodes using rotating disk e... Read More about Hydrogen Electrooxidation under Conditions of High Mass Transport in Room-Temperature Ionic Liquids and the Role of Underpotential-Deposited Hydrogen.

Developing energy efficient lignin biomass processing – towards understanding mediator behaviour in ionic liquids (2016)
Journal Article
Eshtaya, M., Ejigu, A., Stephens, G., Walsh, D. A., Chen, G. Z., & Croft, A. K. (2016). Developing energy efficient lignin biomass processing – towards understanding mediator behaviour in ionic liquids. Faraday Discussions, 190, 127-145. https://doi.org/10.1039/c5fd00226e

Environmental concerns have brought attention to the requirement for more efficient and renewable processes for chemicals production. Lignin is the second most abundant natural polymer, and might serve as a sustainable resource for manufacturing fuel... Read More about Developing energy efficient lignin biomass processing – towards understanding mediator behaviour in ionic liquids.

Biomass-derived activated carbon with simultaneously enhanced CO2 uptake for both pre and post combustion capture applications (2015)
Journal Article
Coromina, H. M., Walsh, D. A., & Mokaya, R. (2015). Biomass-derived activated carbon with simultaneously enhanced CO2 uptake for both pre and post combustion capture applications. Journal of Materials Chemistry A, 4(1), https://doi.org/10.1039/C5TA09202G

We report on the synthesis and CO2 uptake capabilities of a series of activated carbons derived from biomass raw materials, Jujun grass and Camellia japonica. The carbons were prepared via hydrothermal carbonization of the raw materials, which yielde... Read More about Biomass-derived activated carbon with simultaneously enhanced CO2 uptake for both pre and post combustion capture applications.

Synergistic catalyst-support interactions in a graphene-Mn3O4 electrocatalyst for vanadium redox flow batteries (2015)
Journal Article
Ejigu, A., Edwards, M., & Walsh, D. A. (2015). Synergistic catalyst-support interactions in a graphene-Mn3O4 electrocatalyst for vanadium redox flow batteries. ACS Catalysis, 5(12), https://doi.org/10.1021/acscatal.5b01973

The development of vanadium redox flow batteries (VRFBs) is partly limited by the sluggishness of the electrochemical reactions at conventional carbon-based electrodes. The VO2+/VO2+ redox reaction is particularly sluggish and improvements in battery... Read More about Synergistic catalyst-support interactions in a graphene-Mn3O4 electrocatalyst for vanadium redox flow batteries.

Room temperature ionic liquid electrolytes for redox flow batteries (2015)
Journal Article
Ejigu, A., Greatorex-Davies, P., & Walsh, D. A. (2015). Room temperature ionic liquid electrolytes for redox flow batteries. Electrochemistry Communications, 54, https://doi.org/10.1016/j.elecom.2015.01.016

Redox flow batteries (RFBs) usually contain aqueous or organic electrolytes. The aim of this communication is to explore the suitability of room temperature ionic liquids (RTILs) as solvents for RFBs containing metal complexes. Towards this aim, the... Read More about Room temperature ionic liquid electrolytes for redox flow batteries.

Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors (2014)
Journal Article
Liew, S. Y., Thielemans, W., & Walsh, D. A. (2014). Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors. Journal of Solid State Electrochemistry, 18(12), https://doi.org/10.1007/s10008-014-2669-7

The formation and characterisation of films of polyaniline (PANI) and poly(ethylenedioxythiophene) (PEDOT) containing cellulose nanocrystals (CNXLs) from cotton are described. PANI/CNXL films were electrodeposited from a solution containing CNXLs, HC... Read More about Polyaniline- and poly(ethylenedioxythiophene)-cellulose nanocomposite electrodes for supercapacitors.

The role of adsorbed ions during electrocatalysis in ionic liquids (2014)
Journal Article
Ejigu, A., & Walsh, D. A. (2014). The role of adsorbed ions during electrocatalysis in ionic liquids. Journal of Physical Chemistry C, 118(14), (7414-7422). doi:10.1021/jp411730z. ISSN 1932-7447

The effects of electrode–adsorbate interactions on electrocatalysis at Pt in ionic liquids are described. The ionic liquids are diethylmethylammonium trifluoromethanesulfonate, [dema][TfO], dimethylethylammonium trifluoromethanesulfonate, [dmea][TfO]... Read More about The role of adsorbed ions during electrocatalysis in ionic liquids.

Scanning electrochemical microscopy at thermal sprayed anti-corrosion coatings: effect of thermal spraying on heterogeneous electron transfer kinetics (2011)
Journal Article
Niaz, A., Boatwright, A., Voisey, K., & Walsh, D. A. (2011). Scanning electrochemical microscopy at thermal sprayed anti-corrosion coatings: effect of thermal spraying on heterogeneous electron transfer kinetics. Journal of Electroanalytical Chemistry, 657(1-2), https://doi.org/10.1016/j.jelechem.2011.03.009

The effect of thermal spraying on the electrochemical activity of an anti-corrosion superalloy was studied quantitatively using scanning electrochemical microscopy (SECM). The superalloy used was Inconel 625 (a Ni base superalloy) and thin coatings o... Read More about Scanning electrochemical microscopy at thermal sprayed anti-corrosion coatings: effect of thermal spraying on heterogeneous electron transfer kinetics.