Biomedical Engineering Reference
In-Depth Information
In a well-known analytical work published in 2001, devoted
to the study of the past, present, and future of hydrogen storage in
carbon nanomaterials on-board an automobile, Dillon and Heben
[6] stressed that a technological solution to this problem requires
further and deeper studies of the fundamental aspects of hydrogen-
graphite interaction.
In a series of frequently cited works during the period
1995-1999 [12] done under the guidance of Rodriguez and Baker, it
was announced that a GNF-based superadsorbent with the sorption
capacity of up to 40-60 wt% at 300 K and hydrogen pressure of
11 MPa had been obtained (see Fig. 2.3, Chambers
et al.
).
Figure 2.3
Data on the sorption capacity of GNF and oriented nanotubes
extracted by volumetric
(
) gravimetric (
) and electrochemical
(
) methods; RT stands for “room temperature.”
However, such anomalous results have not yet been reproduced,
either fundamentally justified or disproved by anyone, including
the authors of some “know-how” works [13]. This situation was
particularly discussed in Ref. [7], where fundamental aspects
requiring further study were also highlighted.
In the last few years, despite numerous studies based on the
best theoretical and experimental methods, little has changed in the
“uncomfortable” situation summarized by Figs. 2.3 and 2.4 and the
related diagnosis discussed in the reviews of 2001 and 2002 [6, 7].
Some analytical reviews in the period 2004-2006 [4, 5, 10, 11] put
clearly in evidence that further fundamental studies are needed on
nature, mechanisms, and characteristics of the hydrogen interaction
