scholarly journals EXTRAORDINARY MANIFESTATION OF THE KURDJUMOV-LIKE EFFECT AND THE SPILLOVER-LIKE ONE, RELEVANCE TO THE PROBLEM OF THE EFFICIENT HYDROGEN STORAGE IN GRAPHITE NANOFIBERS

2016 ◽  
pp. 70-75
Author(s):  
Yu. S. Nechaev
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers

Cabon Nanofibrous Materials Prepared from Electrospun Polyacrylonitrile Nanofibers for Hydrogen Storage

2004 ◽  
Vol 837 ◽  
Author(s):  
S. H. Park ◽  
B. C. Kim ◽  
S. M. Jo ◽  
D. Y. Kim ◽  
W. S. Lee
Keyword(s):  
Hydrogen Storage ◽  
Carbon Nanofibers ◽  
Carbon Nanofiber ◽  
Gravimetric Method ◽  
Carbonization Temperature ◽  
Magnetic Suspension ◽  
Graphite Nanofibers ◽  
Surface Areas ◽  
Amorphous Structures ◽  
Buoyancy Correction

ABSTRACTElectrospun PAN nanofibers were carbonized with or without iron(III) acetylacetonate to induce catalytic graphitization within the range of 900–1500°C, resulting in ultrafine carbon fibers with the diameter of about 90–300 nm. The structural properties and morphologies of the resulting carbon nanofibers were investigated using XRD, Raman IR, SEM, TEM, and surface area/pore analysis. The PAN-based carbon nanofibers carbonized without a catalyst had amorphous structures, with d002 = 0.37 nm, and smooth surfaces with very low surface areas of 22–31 m2/g. The carbonization of PAN-based nanofibers in the presence of the catalyst produced the graphite nanofibers (GNF) with d002 = 0.341 nm, indicating turbostrate structures. The graphite structures were grown by increasing the catalyst contents and the carbonization temperature. The hydrogen storage capacities of the aforementioned carbon nanofiber materials were evaluated through the gravimetric method using Magnetic Suspension Balance (MSB) at room temperature and at 100 bars. The storage data were obtained after the buoyancy correction. The CNFs showed hydrogen storage capacities of 0.16–0.50 wt.%, increasing with the increase of carbonization temperature, but that of the CNF at 1500°C was lowest. The hydrogen storage capacities of the GNFs with low surface areas of 100–250m2/g were 0.14–1.01 wt%.

Hydrogen Storage in Graphite Nanofibers:  Effect of Synthesis Catalyst and Pretreatment Conditions

Langmuir ◽  
2004 ◽  
Vol 20 (3) ◽  
pp. 714-721 ◽  
Author(s):  
Angela D. Lueking ◽  
Ralph T. Yang ◽  
Nelly M. Rodriguez ◽  
R. Terry K. Baker
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers ◽  
Pretreatment Conditions

ChemInform Abstract: Hydrogen Storage in Graphite Nanofibers.

ChemInform ◽  
2010 ◽  
Vol 29 (31) ◽  
pp. no-no
Author(s):  
A. CHAMBERS ◽  
C. PARK ◽  
R. T. K. BAKER ◽  
N. M. RODRIGUEZ
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers

scholarly journals Hydrogen Storage in Graphite Nanofibers:  Effect of Synthesis Catalyst and Pretreatment Conditions

Langmuir ◽  
2004 ◽  
Vol 20 (17) ◽  
pp. 7346-7346
Author(s):  
Angela D. Lueking ◽  
Ralph T. Yang ◽  
Nelly M. Rodriguez ◽  
R. Terry K. Baker
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers ◽  
Pretreatment Conditions

scholarly journals Hydrogen Adsorption in Carbon Materials

MRS Bulletin ◽  
1999 ◽  
Vol 24 (11) ◽  
pp. 45-50 ◽  
Author(s):  
M.S. Dresselhaus ◽  
K.A. Williams ◽  
P.C. Eklund
Keyword(s):  
Hydrogen Storage ◽  
Hydrogen Adsorption ◽  
Theoretical Calculations ◽  
Mass Density ◽  
Department Of Energy ◽  
Small Power ◽  
Adsorption Mechanisms ◽  
Graphite Nanofibers ◽  
Low Mass ◽  
Very High

Recent reports of very high, reversible adsorption of molecular hydrogen in pure nanotubes, alkali-doped graphite, and pure and alkali-doped graphite nanofibers (GNFs) have aroused tremendous interest in the research community, stimulating much experimental work and many theoretical calculations worldwide. The U.S. Department of Energy (DOE) Hydrogen Plan has seta standard for this discussion by providing a commercially significant benchmark for the amount of reversible hydrogen adsorption. This benchmark requires a system-weight efficiency (the ratio of stored H2 weight to system weight) of 6.5-wt% hydrogen and a volumetric density of 63 kg H2/m. If the encouraging experimental reports (summarized in Table I) are reproducible, it may be possible to reach the goals of the DOE Hydrogen Plan. On the other hand, the community still awaits confirmation of these experimental results by workers in other laboratories. Of additional concern is the fact that theoretical calculations have been unable to identify adsorption mechanisms compatible with the requirements of the DOE Hydrogen Plan.An economical, safe, hydrogen-storage medium is a critically needed component of a hydrogen-fueled transportation system. Hydrogen storage in a carbon-based material offers further advantages associated with its low mass density. Furthermore, fuel cell technology involving the conversion of hydrogen into protons, or hydrogen and oxygen into electric current, is being vigorously researched for both transportation and small power-plant applications.

scholarly journals Mechanism and Energetics of the Unique Spillover Effect Manifestation, Relevance to the Efficient Hydrogen Storage in Graphite Nanofibers

2015 ◽  
Vol 7 (2) ◽  
pp. 207 ◽  
Author(s):  
Yury Nechaev ◽  
T. Veziroglu
Keyword(s):  
Free Energy ◽  
Hydrogen Storage ◽  
Spillover Effect ◽  
Hydrogen Spillover ◽  
High Density ◽  
Hydrogen Atoms ◽  
Compression Effect ◽  
Graphite Nanofibers ◽  
Hydrogen Molecules ◽  
Thermodynamic Forces

The “thermodynamic forces” and energetics of intercalation of H2 nanophase of a high density into carbon-based nanostructures are considered. The hydrogen self-compression effect, at the expense of the free energy of association of the penetrating hydrogen atoms to the “captured” hydrogen molecules, is shown. The mechanisms of the extraordinary manifestation of both the hydrogen spillover effect, and the Kurdjumov-like effect are discussed.

Hydrogen storage in platelet graphite nanofibers

2007 ◽  
Vol 58 (1) ◽  
pp. 219-223 ◽  
Author(s):  
C HUANG ◽  
H WU ◽  
Y LI
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers

Preparation of platinum-decorated porous graphite nanofibers, and their hydrogen storage behaviors

2008 ◽  
Vol 318 (2) ◽  
pp. 530-533 ◽  
Author(s):  
Byung-Joo Kim ◽  
Young-Seak Lee ◽  
Soo-Jin Park
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers ◽  
Porous Graphite

scholarly journals Hydrogen Storage in Graphite Nanofibers

1998 ◽  
Vol 102 (22) ◽  
pp. 4253-4256 ◽  
Author(s):  
Alan Chambers ◽  
Colin Park ◽  
R. Terry K. Baker ◽  
Nelly M. Rodriguez
Keyword(s):  
Hydrogen Storage ◽  
Graphite Nanofibers
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