A5048928438- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Sensor and Energy Harvesting Materials
- Graphene research and applications
- Graphene and Nanomaterials Applications
- Advanced Battery Technologies Research
- Glass properties and applications
- Luminescence Properties of Advanced Materials
- 2D Materials and Applications
- Bone Tissue Engineering Materials
- Laser-Ablation Synthesis of Nanoparticles
- Transition Metal Oxide Nanomaterials
- MXene and MAX Phase Materials
- ZnO doping and properties
- Conducting polymers and applications
- Quantum Dots Synthesis And Properties
- Electrocatalysts for Energy Conversion
- Electrochemical sensors and biosensors
- Layered Double Hydroxides Synthesis and Applications
- Catalytic Processes in Materials Science
- Phase-change materials and chalcogenides
- Nanomaterials for catalytic reactions
- Semiconductor materials and devices
- Electron and X-Ray Spectroscopy Techniques
Universidad de Sevilla
2024
Instituto de Ciencia de Materiales de Sevilla
2024
Universidade Nova de Lisboa
2021-2024
CUF Porto Hospital
2024
Universidade do Porto
2010-2024
Uninova
2022-2024
University of Lisbon
2022-2024
Trinity College Dublin
2013-2022
Advanced Materials and BioEngineering Research
2014-2020
Centro Hospitalar do Porto
2020
All-printed transistors consisting of interconnected networks various types two-dimensional nanosheets are an important goal in nanoscience. Using electrolytic gating, we demonstrate all-printed, vertically stacked with graphene source, drain, and gate electrodes, a transition metal dichalcogenide channel, boron nitride (BN) separator, all formed from nanosheet networks. The BN network contains ionic liquid within its porous interior that allows gating solid-like structure. Nanosheet...
Abstract 2D transition metal carbides and/or nitrides (MXenes), by virtue of high electrical conductivity, abundant surface functional groups and excellent dispersion in various solvents, are attracting increasing attention showing competitive performance energy storage conversion applications. However, like other materials, MXene nanosheets incline to stack together via van der Waals interactions, which lead limited number active sites, sluggish ionic kinetics, finally ordinary...
Since the discovery of laser-induced graphene (LIG), significant advances have been made to obtain green LIG (gLIG) from abundant, eco-friendly, natural, and organic renewable bio-based carbon sources. Recently, some sustainable cost-effective electronic devices designed with gLIG, resulting in diverse solutions environmental impact caused by waste (e-waste). However, there are still several challenges that must be addressed regarding widespread market implementation gLIG-based products,...
Direct Laser Writing (DLW) has been increasingly selected as a microfabrication route for efficient, cost-effective, high-resolution material synthesis and conversion. Concurrently, lasers participate in the patterning assembly of functional geometries several fields application, which electronics stand out. In this review, recent advances strategies based on DLW are surveyed outlined, laser growth strategies. First, main parameters influencing transformation mechanisms summarized, aimed at...
A significant problem associated with batteries is the rapid reduction of charge-storage capacity increasing charge/discharge rate. For example, improving this rate-performance required for fast-charging car batteries. Rate-performance related to timescales charge or ionic motion in both electrode and electrolyte. However, no quantitative model exists which can be used fit experimental data give insights into dominant rate-limiting processes a given electrode-electrolyte system. Here we...
Abstract Laser irradiation to induce networks of graphene‐based structures toward cost‐effective, flexible device fabrication is a highly pursued area, with applications in various polymeric substrates. This work reports the application this approach commonly available, eco‐friendly, low‐cost substrates, namely, chromatographic and office papers. Through an appropriate chemical treatment sodium tetraborate as fire‐retardant agent, photothermal conversion porous laser‐induced graphene (LIG)...
Here we demonstrate significant improvements in the performance of supercapacitor electrodes based on 2D MnO2 nanoplatelets by addition carbon nanotubes. Electrodes do not display high areal capacitance because electrical properties such films are poor, limiting transport charge between redox sites and external circuit. In addition, mechanical strength is low, achievable electrode thickness, even presence binders. By adding nanotubes to MnO2-based electrodes, have increased conductivity up 8...
While it is well-known that the electronic conductivity of electrodes has a critical impact on rate performance in batteries, this relationship been quantified only by computer simulations. Here we investigate between electrode and model cathode system lithium–nickel–manganese–cobalt–oxide (NMC) filled with various quantities carbon black, single-walled nanotubes, graphene. We find extreme anisotropy significant differences dependence mass fraction among different fillers. Fitting capacity...
In article number 2000842, Valeria Nicolosi, Yuxi Xu, and co-workers review the commonly used strategies for manufacturing 3D MXene architectures. Special attention is also given to understand structure-property relationships of architectures highlight their promising applications in electrochemical energy storage conversion, including supercapacitors, rechargeable batteries, electrocatalysis.
Laser-induced graphene (LIG) has gained preponderance in recent years, as a very attractive material for the fabrication and patterning of graphitic structures electrodes, multiple applications electronics. Typically, polymeric substrates, such polyimide, have been used precursor materials, but other organic, more sustainable, accessible materials emerged viable alternatives, including cellulose substrates. However, these substrates lacked conductive chemical properties achieved by...
Abstract Laser-induced graphene (LIG) is as a promising material for flexible microsupercapacitors (MSCs) due to its simple and cost-effective processing. However, LIG-MSC research production has been centered on non-sustainable polymeric substrates, such polyimide. In this work, it presented cost-effective, reproducible, robust approach the preparation of LIG structures via one-step laser direct writing chromatography paper. The developed strategy relies soaking paper in 0.1 M sodium...
This paper describes the wet-chemistry synthesis of highly crystalline hexagonal flakes Ni-Fe layered double hydroxide (LDH) produced at temperature as low 100 °C. The with diameter in range 0.5-1.5 μm and thickness between 15 20 nm were obtained by homogeneous precipitation method use triethanolamine (TEA) urea. By analyzing intermediate products, it is suggested that, differently from previous reports, a thermodynamically metastable iron oxyhydroxide Ni-TEA complex are firstly formed room...
Abstract Among other things, battery electrodes need to display large absolute capacities coupled with high rate performance. However, enhancing areal capacity, for example via increased electrode thickness, results in reductions The basis this negative correlation has not been studied a quantitative fashion. Here, semiempirical model is used analyze capacity versus data fabricated from number of materials, each measured at various thicknesses. Fitting the outputs low‐rate Q A , and...
Abstract The demand for smart, wearable devices has been dictating our daily life with the evolution of integrated miniaturized electronics. With technological innovations, comes impactful human footprint left on planet’s ecosystems. Therefore, it is necessary to explore renewable materials and sustainable methodologies industrial processes. Here, an eco-friendly approach producing flexible electrodes based a single-step direct laser writing reported. A 1.06 µ m wavelength fiber was used...
Laser irradiation of polymeric materials has drawn great attention as a fast, simple, and cost-effective method for the formation porous graphene films that can be subsequently fabricated into low-cost flexible electronic energy-storage devices. In this work, we report systematic study laser-induced (LIG) with sheet resistances low 9.4 Ω/sq on parylene-C ultrathin membranes under CO2 infrared laser. Raman analysis proved multilayered graphenic material, ID/IG I2D/IG peak ratios 0.42 0.65,...
Developing sustainable options for energy storage in textiles is needed to power future wearable "Internet of Things" (IoT) electronics. This process must consider disruptive alternatives that address questions sustainability, reuse, repair, or even a second life application. Herein, we pair stretch-broken carbon fiber yarns (SBCFYs), as current collectors, and an situ regenerated cellulose-based ionic hydrogel (RCIH), electrolyte, fabricate 1D fiber-shaped supercapacitors (FSCs). The areal...
Laser-induced graphene (LIG) allows for the fabrication of cost-effective, flexible electrodes on a multitude recyclable and sustainable substrates, implementation within electrochemical biosensors. This work expands current LIG research, by experimentally modeling effects several CO2 laser irradiation variables towards resulting conductive properties paper-derived LIG. Instead relying established paradigm manipulating power scan speed process optimized outcomes, underlying operation...
Laser-induced graphene (LIG) on paper is a popular choice for fabricating flexible micro-supercapacitors (MSCs) as it simple and sustainable process. However, carbon-based MSC electrodes have limited energy densities. To address this challenge, study presents highly reproducible cost-effective method decorating manganese oxide (MnOx) interdigital LIG electrodes, fabricated via single-step direct laser writing (DLW) process substrates. The fibers embedded with MnOx precursors are transformed...
Abstract Extensive research into green technologies is driven by the worldwide push for eco‐friendly materials and energy solutions. The focus on synergies that prioritize sustainability environmental benefits. This study explores potential of abundant, non‐toxic, sustainable resources such as paper, lignin‐enriched cork producing laser‐induced graphene (LIG) supercapacitor electrodes with improved capacitance. A single‐step methodology using a CO 2 laser system developed fabricating these...
A novel bioactive bone substitute with improved osteoblastic performance and effective antibacterial activity was developed, using a completely new approach based on samarium (Sm3+) doped P2O5 glass-reinforced hydroxyapatite composites (GR-HA). The were prepared by adding 2.5% (w/w) of the glass to 97.5% HA. Four i.e. one non-doped composite, three Sm3+ containing 0.5, 1 2 (mol%) Sm2O3. labeled as GR-HA_control, GR-HA_0.5Sm, GR-HA_1Sm GR-HA_2Sm. physicochemical mechanically characterized,...