17 / 20
allied
academies
Page 65
Notes:
May 13-14, 2019 | Prague, Czech Republic
Chemistry and Medicinal Chemistry
9
th
World Congress on
Asian Journal of Biomedical and Pharmaceutical Sciences | Volume 9
ISSN: 2249-622X
Innovative carbon-based materials for solid state hydrogen storage and energy
storage
Milanese Chiara
University of Pavia, Italy
A
lkali cluster-intercalated fullerides (ACIF) consist
in crystalline nanostructures in which positively
charged metal clusters are ionically bond to negatively
charged C
60
molecules, forming charge-transfer salts.
These compounds have been recently investigated with
renewed interest, appearing as a novel class of materials
for hydrogen storage, thanks to their proved capability
to uptake reversibly high amounts of hydrogen via a
complex chemisorption mechanism. In this presentation,
after a short summary on the hydrogen storage topic, the
synthesis, the structural investigation and the hydrogen
storage properties of Li, Na and mixed Li-Na clusters
intercalated fullerides belonging to the families Na
x
Li12
-
x
C
60
(0 ≤ x ≤ 12) and Na
x
Li 6
-x
C
60
(0 ≤ x ≤ 6) will be presented.
By manometric and thermal analyses it has been proved
that C
60
covalently binds up to 5.5 wt% H
2
at moderate
temperature and pressure, thanks to the catalytic effect of
the intercalated alkali clusters. Moreover, the destabilizing
effect of Na in the co-intercalated Na
x
Li
6
-xC
60
compounds
leads to an improvement of the hydrogen-sorption kinetics
by about 70%, linked to a decrease in the desorption
enthalpy from 62 to 44 kJ/mol H
2
. The addition of Pt and Pd
nanoparticles to Li fullerides increases up to 5.9 wt% H
2
the
absorption performances and of about 35 % the absorption
rate. The ammonia storage properties of Li
6
C
60
have also
been investigated, resulting quite appealing. Being the
price of C
60
quite high for large scale practical applications,
new cheaper C based materials are under examination.
In particular, porous biochar from agricultural waste are
giving quite interesting results as electrode materials for
high-performance supercapacitors.
Speaker Biography
Milanese Chiara is associate professor of Physical Chemistry at the
Chemistry Department of the University of Pavia (Italy). Her main
research interests regard the synthesis of innovative nanomaterials
for solid state hydrogen storage and for energy storage, their
physico-chemical characterization and the evaluation of their storage
performance. In the last 5 years, her attention was mainly focused on
C-based materials, in particular fullerene derivatives and biochar. She
is author of 165 papers on materials science topics and she is expert
of the IEA Task 40 “Energy storage and conversion based on hydrogen”.
e:
chiara.milanese@unipv.itMilanese Chiara, Asian J Biomed Pharmaceut Sci, Volume:9
DOI: 10.4066/2249-622X-C2-020