Category Archives: Hydrogen Storage

Extending the hydrogen storage limit in fullerene

Li6C60 has been chosen as the most representative system to study the hydrogenation mechanism in alkali-cluster intercalated fullerides. We present a muon spin relaxation (╬╝SR) experiment that hints the chance to achieve a higher storage capacity on fullerene with respect … Continue reading

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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  

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Ammonia Storage in lithium fullerides

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  Ammonia has been proposed as an indirect hydrogen carrier, as solid-state ammonia-storage could be easier than directly absorbing hydrogen in materials. Here we investigate the structural evolution of hyper-ammoniated lithium fullerides (ND3)yLi6C60 during ammonia desorption, using in-situ high intensity … Continue reading

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Tracking the Hydrogen Motion in Defective Graphene

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Bulk defective graphene produced by thermal exfoliation of graphite oxide was treated under H2 and investigated with X-ray photoemission spectroscopy, neutron spectroscopy, and solid state nuclear magnetic resonance. Graphene defects appear effective in dissociating H2 molecule and in promoting H … Continue reading

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Decoration of graphene with nickel nanoparticles: study of the interaction with hydrogen

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Graphene obtained from thermal exfoliation of graphite oxide was chemically functionalized with nickel nanoparticles (NPs) without exposing the system to oxidizing agents. Its structural, physical and chemical properties have been studied by means of TEM, X-ray photoelectron and Raman spectroscopies, … Continue reading

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Reversible hydrogen absorption in sodium intercalated fullerenes

The hydrogen absorption of sodium intercalated fullerenes was determined and compared to pure fullerenes C60. Up to 3.5 mass% hydrogen can reversibly be absorbed in NaxC60 at 200 C and a hydrogen pressure of 200 bar. The absorbed amount of … Continue reading

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Muons Probe Strong Hydrogen Interactions with Defective Graphene

We present the first muon spectroscopy investigation of graphene, focused on chemically produced, gram-scale samples, appropriate to the large muon penetration depth. We have observed an evident muon spin precession, usually the fingerprint of magnetic order, but here demonstrated to … Continue reading

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