Hydrogen in Fullerites

Schur, D. V.; Тарасов, Б. П.; Shul'ga, Yuriy M.; Zaginaichenko, S. Yu.; Матысина, З. А.; Pomytkin, A.P.

doi:10.1002/chin.200348231

Cited by 4 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A final hydrogen absorption of 2.4 mass % H 2 was reached, and the color of the sample was red. Determination of the fcc lattice parameter of hydrogenated C 60 yields a = 14.394(2) Å, and by comparing with the linear dependence as a function of the hydrogen content given by Shur et al the absorption was determined to 2.1 mass % H 2 by XRD. The absorption kinetic of Li 12 C 60 is much faster compared to pure C 60 , even at a lower temperature.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen Sorption in Li₁₂C₆₀

et al. 2013

View full text Add to dashboard Cite

The lithium-intercalated fulleride Li 12 C 60 was investigated in view of a lightweight hydrogen storage material due to the low molecular weight of its constituents. Deuterium (D 2 ) absorption in Li 12 C 60 shows an uptake of up to 9.5 mass % D 2 (equivalent to ∼5 mass % H 2 for the same stoichiometry). Under a pressure of 190 bar the onset of absorption was observed at a temperature below 100 °C, which is 200 °C lower than that for pure C 60 . Deuterium desorption was investigated by in-situ neutron powder diffraction, and at a pressure of 1 bar desorption was observed above 300 °C. The ab/desorption is accompanied by a partial de/reintercalation of lithium, observed by the appearance and disappearance of LiD reflections after absorption and during desorption, respectively. A minor part of deuterium is present in ionic form in LiD, and the major part is covalently bound in a Li-depleted compound Li 12−x C 60 D 36+y .

show abstract

Section: Resultsmentioning

confidence: 99%

Hydrogen Sorption in Li₁₂C₆₀

et al. 2013

View full text Add to dashboard Cite

show abstract

“…Since their discovery and subsequent mass production, carbon fullerenes have been derivatized and modified for a variety of diverse applications. − Among them, fullerene reduction via hydrogenation is recognized as a promising process for reversible hydrogen storage (through stable hydrogenation–dehydrogenation cycling). ,, Hydrogenated fullerenes, also termed “fulleranes”, have been also used in lithium ion batteries for enhanced efficiency and extended lifetimes . The first fullerene hydrogenation protocol was developed by Haufler et al through a Birch–Hückel reduction, resulting in C 60 H 18 –C 60 H 36 as major products .…”

Section: Introductionmentioning

confidence: 99%

Photo-Oxidation of Hydrogenated Fullerene (Fullerane) in Water

Goodwin²,

Peter

et al. 2014

Environ. Sci. Technol. Lett.

View full text Add to dashboard Cite

Hydrogenated fullerenes (termed fulleranes) have been demonstrated to be key material components in advanced hydrogen storage and lithium battery technologies, among other applications; however, their potential environmental reactivity has not been evaluated to date. Here, for the first time, photoinduced oxidation and corresponding dissolution of solid fulleranes (C 60 H x , where x = 39.9−45.5) into water are demonstrated to occur rapidly under attenuated sunlight, UV-A irradiation, and even dark conditions, albeit more slowly as long as oxygen is present. Through a series of batch experiments, reaction kinetics demonstrate that both light and oxygen play critical roles in the solvation process as reaction rates were a function of both irradiation intensity and wavelength along with dissolved oxygen concentration. Resulting products, which were characterized by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, ultraviolet−visible spectroscopy, total organic carbon analysis, and dynamic light scattering, showed significant loss of hydrogenation and extensive oxygen-based functional group addition(s). Hydroxyl radical was identified as one of the major reactive oxygen species involved in the reaction. The increased hydrophilicity of product materials was quantified through classic octanol−water partition experiments (K ow ).

show abstract

“…Other mentionable examples of various HTHP studies are those which aim to modify the nanostructures of materials such as the hydrogenation of fullerenes. Fullerenes have been shown to react with hydrogen gas at high temperatures (400–600 °C) and pressures of 50–150 bar, forming hydrofullerides C 60 H x and other compounds such as C 60 H 36 and C 60 H 18 . − …”

Section: Various Carbon Products From High Temperature/high Pressure ...mentioning

confidence: 99%

A Review: Synthesis of Carbon-Based Nano and Micro Materials by High Temperature and High Pressure

Bazargan

Yan

Hui

et al. 2013

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

This review covers the production of solid carbonaceous materials at high temperatures (above 500 °C) and high pressures. The review orders the high temperature/high pressure (HTHP) studies by their final product categories, namely carbon spheres, prolate spheroids (also known as ellipsoids and olivaries), nanotubes, and others such as diamonds, fullerenes, composites, and nanostars. The mechanisms as well as the properties of the products are discussed. In particular, the literature pertaining to the production of carbon ellipsoids has been collected for the first time. On one hand, the review concludes that, due to the existence of other conventional and more practical methods, the production of nanotubes and spheres via HTHP does not appear to be industrially feasible. On the other hand, using the HTHP method to produce olivary carbons and other new and exotic products seems attractive due to the absence of conventional methods for their production.

show abstract

Hydrogen in Fullerites

Cited by 4 publications

References 1 publication

Hydrogen Sorption in Li₁₂C₆₀

Hydrogen Sorption in Li₁₂C₆₀

Photo-Oxidation of Hydrogenated Fullerene (Fullerane) in Water

A Review: Synthesis of Carbon-Based Nano and Micro Materials by High Temperature and High Pressure

Contact Info

Product

Resources

About

Hydrogen in Fullerites

Cited by 4 publications

References 1 publication

Hydrogen Sorption in Li12C60

Hydrogen Sorption in Li12C60

Photo-Oxidation of Hydrogenated Fullerene (Fullerane) in Water

A Review: Synthesis of Carbon-Based Nano and Micro Materials by High Temperature and High Pressure

Contact Info

Product

Resources

About

Hydrogen Sorption in Li₁₂C₆₀

Hydrogen Sorption in Li₁₂C₆₀