Colm O’Dwyer
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View article: Medical versus science students: knowledge, perceptions and learning of core pharmacology concepts
Medical versus science students: knowledge, perceptions and learning of core pharmacology concepts Open
View article: Voltammetric Priming for Electrochemically Stable 3D Printed Aqueous Gel Li-ion Rechargeable Batteries in Various Form Factors
Voltammetric Priming for Electrochemically Stable 3D Printed Aqueous Gel Li-ion Rechargeable Batteries in Various Form Factors Open
Rechargeable batteries with customizable shapes and geometries that can be incorporated directly into the design of a device by 3D printing of functional materials could enable new smart devices for consumer electronics, medical devices, a…
View article: Operando Acoustic Spectroscopy for Optimizing Gas Evolution In Hydrogen Evolution Reaction and the Oxygen Evolution Reaction Processes
Operando Acoustic Spectroscopy for Optimizing Gas Evolution In Hydrogen Evolution Reaction and the Oxygen Evolution Reaction Processes Open
The use of earth‐abundant materials for novel electrodes for solar‐driven electrolysis will play a significant role in the future production of hydrogen as a green energy source. The choice of electrolyte will play a major role in how effi…
View article: Porous carbon nanotube electrodes in 3D printed symmetric supercapacitors with stable electrochemical response
Porous carbon nanotube electrodes in 3D printed symmetric supercapacitors with stable electrochemical response Open
View article: Using Recovered Lithium Iron Phosphate Battery Materials as Efficient Electrocatalysts for the Oxygen Evolution Reaction
Using Recovered Lithium Iron Phosphate Battery Materials as Efficient Electrocatalysts for the Oxygen Evolution Reaction Open
The rapid emergence of lithium‐ion batteries (LIBs) to satisfy our ever increasing energy demands will result in a significant future waste problem at their end of life. Lithium iron phosphate (LFP) as a cathode material is now widely used…
View article: Effect of Solvent Presoaking of FDM-Printed Conductive PLA Current Collectors in 3D-Printed Carbon Supercapacitors
Effect of Solvent Presoaking of FDM-Printed Conductive PLA Current Collectors in 3D-Printed Carbon Supercapacitors Open
The electrochemical response of symmetric carbon-based supercapacitor devices made using two 3D-printing techniques, Vat-P (vat polymerization) and FDM (fused deposition modeling), shows how the printing method dominates the overall cell r…
View article: Understanding the Morphological Properties of Sulfur Electrodes for High-Capacity and High-Power Lithium-Sulfur Batteries
Understanding the Morphological Properties of Sulfur Electrodes for High-Capacity and High-Power Lithium-Sulfur Batteries Open
Porosity, composition, and electrode thickness play a vital role in lithium-sulfur (Li-S) batteries. They can be difficult to control and can make the link between morphology and its performance more complex. We evaluated the utilization o…
View article: Review—ZnO-based Thin Film Metal Oxide Semiconductors and Structures: Transistors, Optoelectronic Devices and Future Sustainable Electronics
Review—ZnO-based Thin Film Metal Oxide Semiconductors and Structures: Transistors, Optoelectronic Devices and Future Sustainable Electronics Open
Metal oxide thin films are critically important materials for modern technologies, particularly semiconductor thin films in transistors and optoelectronic applications. Many metal oxide thin films attract interest for their electronic band…
View article: From the President: Symbiotic and United--Our Society's Mission Looking Ahead
From the President: Symbiotic and United--Our Society's Mission Looking Ahead Open
“ECS United” embodies the integration and interdependence that our modern-day technologies require—their power sources, their function, their capability, and how they add to the quality of life. What we all work on and what we will present…
View article: ZnO-based Semiconductors and Structures for Transistors, Optoelectronic Devices and Sustainable Electronics
ZnO-based Semiconductors and Structures for Transistors, Optoelectronic Devices and Sustainable Electronics Open
Metal oxide thin films are of great interest in scientific advancement, particularly semiconductor thin films in transistors and in a wide range of optoelectronic applications. Many metal oxide thin films attract interest for their electro…
View article: The Influence of 3D Printing Methods and Materials on the Response of Printed Symmetric Carbon Supercapacitors
The Influence of 3D Printing Methods and Materials on the Response of Printed Symmetric Carbon Supercapacitors Open
We compare the electrochemical response and intrinsic limitations of symmetric carbon-based supercapacitors using two 3D-printing techniques, vat polymerization (Vat-P) and fused deposition modelling (FDM). Two cell types were made in this…
View article: From the President: ECS United
From the President: ECS United Open
It gives me great pleasure to write to you for the first time since becoming ECS President. I assumed the role following the 245th ECS Meeting in San Francisco, CA, which I certainly hope you attended. That amazing event featured 49 sympos…
View article: Carbon Inverse Opal Macroporous Monolithic Structures as Electrodes for Na-ion and K-ion Batteries
Carbon Inverse Opal Macroporous Monolithic Structures as Electrodes for Na-ion and K-ion Batteries Open
Highly ordered three-dimensionally structured carbon inverse opals (IOs) produced from sucrose are stable electrodes in sodium-ion and potassium-ion batteries. The walls of the ordered porous carbon structure contain short-range graphitic …
View article: Three – Dimensionally Ordered Macroporous Amorphous C/TiO<sub>2</sub> Composite Electrodes for Lithium-ion Batteries
Three – Dimensionally Ordered Macroporous Amorphous C/TiO<sub>2</sub> Composite Electrodes for Lithium-ion Batteries Open
A facile method utilizing colloidal templating and sucrose as a carbon precursor is used to synthesize highly ordered, porous inverse opal structures as C/TiO 2 nanocomposites. Material characterization shows amorphous TiO 2 and a large po…
View article: Surface Modification Improves Spinel LiCoO<sub>2</sub> Li-Ion Battery Cathode Materials Grown by Low Temperature Solvothermal Flow Reaction
Surface Modification Improves Spinel LiCoO<sub>2</sub> Li-Ion Battery Cathode Materials Grown by Low Temperature Solvothermal Flow Reaction Open
Methods that provide routes to LiCoO 2 growth with lower energy requirements from recycled battery cathode ashes are important for sustainable Li-ion battery technology . Here, a low temperature route to a stable, coated spinel-phase LT-LC…
View article: Photonic stopband and reflectance asymmetry from thickness gradient in opals
Photonic stopband and reflectance asymmetry from thickness gradient in opals Open
The influence of thickness gradient and structural order on the spectral response of opal photonic crystals (PhCs) grown by evaporation-induced self-assembly (EISA) are presented. SEM imaging and angle resolved optical transmission spectro…
View article: 3D Printed Rechargeable Aqueous and Non-Aqueous Lithium-Ion Batteries: Evolution of Design and Performance
3D Printed Rechargeable Aqueous and Non-Aqueous Lithium-Ion Batteries: Evolution of Design and Performance Open
Here we describe the modeling and design evolution of vat polimerized (Vat-P) stereolithographic apparatus (SLA) 3D printed coin cell-type aqueous and non-aqueous rechargeable lithium-ion batteries, cases and current collectors. We detail …
View article: Operando Color-Coding of Reversible Lithiation and Cycle Life in Batteries Using Photonic Crystal Materials
Operando Color-Coding of Reversible Lithiation and Cycle Life in Batteries Using Photonic Crystal Materials Open
Innovative new materials are consistently emerging as electrode candidates from lithium-ion and emerging alternative battery research, promising high energy densities and high-rate capabilities. Understanding potential structural changes, …
View article: The Effect of TiO<sub>2</sub> and GeO<sub>2</sub> Composite Mixing on the Behavior of Macroporous Li-Ion Battery Anode Materials
The Effect of TiO<sub>2</sub> and GeO<sub>2</sub> Composite Mixing on the Behavior of Macroporous Li-Ion Battery Anode Materials Open
Highly ordered, macroporous inverse opal structures can be made as TiO 2 /GeO 2 nanocomposites with various GeO 2 content and provide Coulombic and voltage stable response where the Ge content and its distribution influence the overall cap…
View article: Comparing Cycling and Rate Response of SnO<sub>2</sub> Macroporous Anodes in Lithium-Ion and Sodium-Ion Batteries
Comparing Cycling and Rate Response of SnO<sub>2</sub> Macroporous Anodes in Lithium-Ion and Sodium-Ion Batteries Open
Tin oxide (SnO 2 ) is a useful anode material due to its high capacity (1493 mAh g −1 and 1378 mAh g −1 vs Li/Li + and vs Na/Na + , respectively) and natural abundance (tin is one of the thirty most abundant elements on Earth). Unfortunate…
View article: Asymmetrical Optical Response of Opal Photonic Crystals with Graded Thickness
Asymmetrical Optical Response of Opal Photonic Crystals with Graded Thickness Open
The influence of thickness gradient and structural order on the spectral response of opal photonic crystals (PhCs) grown by evaporation-induced self-assembly (EISA) are presented. SEM imaging and angle resolved optical transmission spectro…
View article: Dispersion and Thickness Control in Evaporation-induced Self-Assembly of Opal Photonic Crystals
Dispersion and Thickness Control in Evaporation-induced Self-Assembly of Opal Photonic Crystals Open
Opals are naturally occurring photonic crystals which can be formed easily using low-cost self-assembly methods. While the optical behaviour of opals has received significant attention over the last number of decades, there is limited info…
View article: Operando Photonic Band Gap Probe of Battery Electrode Materials
Operando Photonic Band Gap Probe of Battery Electrode Materials Open
Innovative new materials are consistently emerging as electrode candidates from lithium-ion battery research, promising high energy densities and high-rate capabilities. Understanding potential structural changes, morphology evolution, deg…
View article: Thickness control of dispersion in opal photonic crystals
Thickness control of dispersion in opal photonic crystals Open
Opals are naturally occurring photonic crystals which can be formed easily using low-cost self-assembly methods. While the optical behaviour of opals has received significant attention over the last number of decades, there is limited info…
View article: Water-Soluble Binders That Improve Electrochemical Sodium-Ion Storage Properties in a NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> Anode
Water-Soluble Binders That Improve Electrochemical Sodium-Ion Storage Properties in a NaTi<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub> Anode Open
Water-soluble binders are demonstrated to provide significantly better capacity, cycle life stability and rate response for NASICON-type NaTi 2 (PO 4 ) 3 Na-ion battery anodes during reversible sodiation compared to electrodes made using p…
View article: Recyclable 3D‐Printed Aqueous Lithium‐Ion Battery
Recyclable 3D‐Printed Aqueous Lithium‐Ion Battery Open
Additive manufacturing, or 3D printing, in energy storage devices such as batteries has the potential to create new form factor small cells that are incorporated into the shape of the device at the design stage. With large‐scale proliferat…
View article: Real-time nondestructive methods for examining battery electrode materials
Real-time nondestructive methods for examining battery electrode materials Open
With the importance of Li-ion and emerging alternative batteries to our electric future, predicting new sustainable materials, electrolytes, and complete cells that safely provide high performance, long life, and energy dense capability is…
View article: Methods—Ampero-Coulometry: A New Technique for Understanding Lithium-Sulfur Electrochemistry
Methods—Ampero-Coulometry: A New Technique for Understanding Lithium-Sulfur Electrochemistry Open
Despite limited commercial success, lithium sulfur technology (LST) is still far from competing existing Li-ion technology. One of the main reasons hindering the success of LST is the complexity of lithium-sulfur chemistry during electroch…
View article: Many Facets of Photonic Crystals: From Optics and Sensors to Energy Storage and Photocatalysis
Many Facets of Photonic Crystals: From Optics and Sensors to Energy Storage and Photocatalysis Open
The ability to selectively redirect specific wavelengths of light has attracted a lot attention for photonic crystal materials. Presently, there is a wealth of research relating to the fabrication and application of photonic crystal materi…
View article: (Invited) Material Porosity
(Invited) Material Porosity Open
Big pores, small pores, ordered pores, random pores – they all have a function and as is often found, show behaviour in new materials that is not always predicted or obvious at the outset. I started my research journey trying to put extrem…