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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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Category Archives: Graphene
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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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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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 TiO2Â nanoparticles embedded in porous graphene-based electrodes has been obtained with … Continue reading
Posted in Energy Storage, Graphene, Superconductivity
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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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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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Effect of Ni-nanoparticles decoration on graphene to enable high capacity sodium-ion battery negative electrodes
Modification of graphene has been undertaken in many research contexts in order to improve its properties. In this study, we examine Ni-nanoparticles decoration on graphene and its effect on sodiumion battery performance. A definite trend is observed on the relationship … Continue reading
Posted in Batteries, Graphene
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Neutrons reveal ‘quantum tunnelling’ on graphene enables the birth of stars
Credit: Institut Laue Langevin See: https://phys.org/news/2017-02-neutrons-reveal-quantum-tunnelling-graphene.html and: http://www.cemag.us/news/2017/02/quantum-tunneling-graphene-holds-secret-birth-stars
Posted in Graphene, Hydrogen Storage
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Mechanisms of Sodium Insertion/Extraction on the Surface of Defective Graphenes
Two chemically synthesized defective graphene materials with distinctly contrasting extended structures and surface chemistry are used to prepare sodium-ion battery electrodes. The difference in electrode performance between the chemically prepared graphene materials is qualified based on correlations with intrinsic structural … Continue reading
Posted in Batteries, Graphene
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