A5035016479- Advancements in Battery Materials
- Photonic Crystals and Applications
- Transition Metal Oxide Nanomaterials
- Plant and animal studies
- Advanced Battery Materials and Technologies
- Photonic and Optical Devices
- Supercapacitor Materials and Fabrication
- Electron and X-Ray Spectroscopy Techniques
- Quantum Dots Synthesis And Properties
- Laser-induced spectroscopy and plasma
- Semiconductor materials and devices
- Electronic and Structural Properties of Oxides
- Extraction and Separation Processes
- Nanomaterials for catalytic reactions
- Advanced Optical Sensing Technologies
- Ocular and Laser Science Research
- Advanced Battery Technologies Research
- Graphene research and applications
University College Cork
2022-2024
National University of Ireland
2023-2024
With the importance of Li-ion and emerging alternative batteries to our electric future, predicting new sustainable materials, electrolytes, complete cells that safely provide high performance, long life, energy dense capability is critically important. Understanding interface, microstructure nature electrolytes factors affect or limit long-term performance key battery chemistries, cell form factors, materials. The electrochemical processes `that cause these changes are also difficult probe...
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 electrodes made using polyvinylidene difluoride-containing slurries. The role of carboxymethyl cellulose (CMC) on the physical structure chemical interfacial reactions with sodium-poor uncovered electron microscopy spectroscopy data we show that a more stable NASICON is found from...
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 last number decades, there is limited information on effect crystal thickness properties they display. Here, relationship between volume fraction and established with an evaporation-induced (EISA) method formation. The extent to used manipulate explored, focusing change in band gap (PBG). Microscopical...
Tin oxide (SnO 2 ) is a useful anode material due to its high capacity (1493 mAh g −1 and 1378 vs Li/Li + Na/Na , respectively) natural abundance (tin one of the thirty most abundant elements on Earth). Unfortunately, only moderate electrical conductivity significant volume expansion up 300% for Li-ion, as much 520% Na-ion can occur. Here, we use an ordered macroporous interconnected inverse opal (IO) architectures enhance rate capability, structural integrity, gravimetric capacity, without...
A facile method utilizing colloidal templating and sucrose as a carbon precursor is used to synthesize highly ordered, porous inverse opal structures C/TiO 2 nanocomposites. Material characterization shows amorphous TiO large pore size of ∼400 nm allowing for enhanced electrolyte penetration. opals materials electrodes in Li-ion battery half cells demonstrate discharge charge capacities ∼870 mAh g −1 470 , respectively, at current density 150 mA . The capacities, which surpass theoretical...
Despite limited commercial success, lithium sulfur technology (LST) is still far from competing existing Li-ion technology. One of the main reasons hindering success LST complexity lithium-sulfur chemistry during electrochemical charging and discharging. Dissolution species in electrolyte solution exacerbates difficulties this system. Therefore, a comprehensive understanding their kinetics charge/discharge process paramount for high-performance battery. We present new technique we refer to...
Highly ordered, macroporous inverse opal structures can be made as TiO 2 /GeO nanocomposites with various GeO content and provide Coulombic voltage stable response where the Ge its distribution influence overall capacity at both slow fast rates. These interconnected binder-free anodes were characterized using X-ray diffraction, high resolution transmission electron microscopy, selected area energy dispersive spectroscopy loss spectroscopy. The electrochemical in half cells over 2000 cycles...
Methods that provide routes to LiCoO 2 growth with lower energy requirements from recycled battery cathode ashes are important for sustainable Li-ion technology . Here, a low temperature route stable, coated spinel-phase LT-LCO material secondary Co 3 O 4 phase can be achieved at 300 °C directly the layered double hydroxide [Li (ox) ][Co 5 (OH) 8 ] product of solvothermally synthesized LiOH and CoCl The low-temperature materials (known as LT-LCO) consist LCO phase. As in lithium batteries,...
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 porous structure contain short-range graphitic areas. interconnected open-worked defines a conductive macroporous monolithic electrode that is easily wetted by electrolytes for Na-ion K-ion systems. Electrochemical characterization half-cells against Na metal reveals discharge capacities 25 mAh g −1 at 35 mA 40 75 185...
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 last number decades, there is limited information on effect crystal thickness properties they display. Here, relationship between volume fraction and established with an evaporation-induced (EISA) method formation. The extent to used manipulate explored, focusing change in band gap (PBG). Microscopical...
The influence of thickness gradient and structural order on the spectral response opal photonic crystals (PhCs) grown by evaporation-induced self-assembly (EISA) are presented. SEM imaging angle resolved optical transmission spectroscopy used to investigate evolution PBG along a for opals from five different colloidal sphere concentrations at two evaporation rates. degradation is demonstrated, occurrence which attenuates with thinning film results in asymmetrical angle-resolved spectra....
The influence of thickness gradient and structural order on the spectral response opal photonic crystals (PhCs) grown by evaporation-induced self-assembly (EISA) are presented. SEM imaging angle resolved optical transmission spectroscopy used to investigate evolution PBG along a for opals from five different colloidal sphere concentrations at two evaporation rates. degradation is demonstrated, occurrence which attenuates with thinning film results in asymmetrical angle-resolved spectra....
As the demands for clean electricity, transport and highly functional portable electronics grow faster than ever, energy storage remains main roadblock to progression. Electrochemical devices such as lithium-ion batteries (LIBs), have been source of most success in overcoming this roadblock. The primary issue with these is lifetime decay due primarily degradation electrodes within battery. Nanocrystalline materials are often chosen, 1 which enhance battery performance by reducing ion...