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Recent Posts
- Resonant enhancement of photo-induced superconductivity in K3C60
- Defective graphene decorated with TiO2 nanoparticles as negative electrode in Li-ion batteries
- Graphene-Based Magnetocaloric Composites for Energy Conversion
- Zn-doped titania nanoparticles as building blocks for solid foam filters of water and air via photocatalytic oxidation
- Combined capacitive and electrochemical charge storage mechanism in high-performance graphene-based lithium-ion batteries
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Author Archives: Daniele Pontiroli
Resonant enhancement of photo-induced superconductivity in K3C60
Photo-excitation at terahertz and mid-infrared frequencies has emerged as an effective way to manipulate functionalities in quantum materials, in some cases creating non-equilibrium phases that have no equilibrium analogue. In K3C60, a metastable zero-resistance phase was observed that has … Continue reading
Posted in Fullerenes, Superconductivity
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Defective graphene decorated with TiO2 nanoparticles as negative electrode in Li-ion batteries
In this work, the performance of novel negative electrodes for Li-ion batteries based on defective graphene synthesized via a scalable thermal exfoliation of graphite oxide and decorated with TiO2 nanoparticles is investigated. Titania polymorphs are interesting as battery electrode … Continue reading
Posted in Batteries, Crystallography, Graphene
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Graphene-Based Magnetocaloric Composites for Energy Conversion
Herein, a simple, versatile, and cost-effective method to fabricate innovative thermal conductive magnetocaloric (MC) composites, which offers a smart solution to manufacture active elements with desired geometries, overcoming the current thermal and mechanical limits of the most studied MC materials, … Continue reading
Posted in Composites, Graphene
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Zn-doped titania nanoparticles as building blocks for solid foam filters of water and air via photocatalytic oxidation
Photocatalytic oxidation (PCO) could provide energy-efficient purification of water and air. Its efficacy is constrained mainly by limited photocatalytic activity and active surface. To address both, solid foams with hierarchic porous structures spanning multiple length-scales, stabilized by photocatalytic Zn-doped titania … Continue reading
Posted in Catalysis
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Combined capacitive and electrochemical charge storage mechanism in high-performance graphene-based lithium-ion batteries
Improvements in lithium (Li)-ion battery technology can be achieved by developing novel, high-performance electrode materials. Graphene appears to be a good candidate as an anode material for Li-ion batteries thanks to the similarity with graphite, the good electrical conductivity, … Continue reading
Posted in Batteries, Energy Storage, Graphene
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Evidence for metastable photo-induced superconductivity in K3C60
Excitation of high-Tc cuprates and certain organic superconductors with intense far-infrared optical pulses has been shown to create non-equilibrium states with optical properties that are consistent with transient high-temperature superconductivity. These non-equilibrium phases have been generated using femtosecond drives, and … Continue reading
Posted in Fullerenes, Superconductivity
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In situ decoration of laser-scribed graphene with TiO2 nanoparticles for scalable high-performance micro-supercapacitors
Graphene-based miniaturized supercapacitors, obtained via laser conversion of suitable precursors, have been attracting recent attention for the production of energy storage small-scale devices. In this work, a one-pot synthesis of TiO2 nanoparticles embedded in porous graphene-based electrodes has been obtained with … Continue reading
Posted in Energy Storage, Graphene, Superconductivity
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Enhancing the performance of carbon electrodes in supercapacitors through medium-temperature fluoroalkylation
Medium-temperature fuoroalkylation of microporous activated carbons (ACs) with 1,1,1,2-tetrafuoroethane is presented. Supercapacitor (SC) electrodes based on the fuoroalkylated ACs showed enhanced specifc capacitance and high specific energy in electrolytes, either aqueous potassium hydroxide solution or tetraethylammonium tetrafuoroborate-acetonitrile solution. We found … Continue reading
Posted in Energy Storage, Supercapacitors
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Nickel addition to optimize the hydrogen storage performance of lithium intercalated fullerides
The addition of transition metals to alkali intercalated fullerides proved to enhance their already good hydrogen absorption properties. Herein we present a study based on two different synthetic strategies, allowing the addition of nickel as aggregates with different size to … Continue reading
Posted in Catalysis, Energy Storage, Fullerenes, Hydrogen Storage
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Neutron scattering study of nickel decorated thermally exfoliated graphite oxide
Surface decoration of graphene-based nanostructures with metals has been predicted to be an efficient way towards the development of resistant catalysts and novel materials for energy applications, such as hydrogen production and storage. We report on an extensive neutron scattering … Continue reading
Posted in Energy Storage, Graphene, Hydrogen Storage
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