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Recent Posts
- Evidence for metastable photo-induced superconductivity in K3C60
- In situ decoration of laser-scribed graphene with TiO2 nanoparticles for scalable high-performance micro-supercapacitors
- Enhancing the performance of carbon electrodes in supercapacitors through medium-temperature fluoroalkylation
- Nickel addition to optimize the hydrogen storage performance of lithium intercalated fullerides
- Neutron scattering study of nickel decorated thermally exfoliated graphite oxide
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Author Archives: Daniele Pontiroli
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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Platinum carbonyl clusters decomposition on defective graphene surface
Having single atoms or small clusters docked onto a single layer graphene represents a charming feature for energy-storage and catalysis. Unfortunately, the large cohesion energy of transition metals often prevents the isolation of nanoscopic clusters, which invariably tend to aggregate. … Continue reading
Posted in Catalysis, Graphene, Hydrogen Storage
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Degassing and phase transitions with temperature in melanophlogite
Melanophlogite (type I clathrate) has a microporous framework of corner sharing SiO4 tetrahedra, which can host guest gases. Here, a multi–analytical approach has been employed to understand the phase transitions with temperature and the degassing behaviour of a melanophlogite sample, which … Continue reading
Posted in Crystallography, Energy Storage
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Super-activated biochar from poultry litter for high-performance supercapacitors
We report on the preparation of a novel hierarchically-porous super-activated carbon originating from organic waste with specific surface area exceeding 3000 m2/g, obtained starting from biochar derived by the pyrolysis of poultry litter. The chemical activation process proved to be efficient … Continue reading
Posted in Energy Storage, Graphene, Supercapacitors
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Pressure tuning of light-induced superconductivity in K3C60
Optical excitation at terahertz frequencies has emerged as an effective means to dynamically manipulate complex materials. In the molecular solid K3C60, short mid-infrared pulses transform the high-temperature metal into a non-equilibrium state with the optical properties of a superconductor. Here … Continue reading
Posted in Fullerenes, Superconductivity
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Electrochemical intercalation of fullerene and hydrofullerene with sodium
We report on the ability of fullerene C60 and hydrogenated fullerene C60Hx (x∼39) to operate as negative electrodes in novel Na-ion batteries. Building upon the known solubility of C60 in common organic electrolytes used in batteries, we developed a suitably … Continue reading
Posted in Batteries, Energy Storage, Fullerenes
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