Advanced Engineering Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 21, 2024
The
encapsulation
of
salt
hydrate
phase
change
materials
(PCMs)
in
uniform
microscale
bodies
has
yet
been
reported
research
due
part
to
the
delicate
relationship
between
thermal
performance
and
water‐to‐salt
ratios
which
are
easily
altered
during
manufacturing.
Herein,
core–shell
composite
fibers
comprised
a
PCM
core
poly(acrylonitrile)
(PAN)
shell
wet
spun
continuous
process
using
syringe
pump
coaxial
die.
comprises
calcium
chloride
hexahydrate
(CaCl
2
·6H
O)
with
strontium
(SrCl
(3
wt%)
fumed
silica
(SiO
)
(2
as
additive,
acomposition
that
is
prepared
from
homogenous
melt
at
40
°C.
15
wt%
PAN
dimethylsulfoxide
solvent
used
prepare
shell‐forming
polymer
gel.
gel
injection
rates
10–40
mL
h
−1
tospin
through
coagulation
bath,
yielding
microtubules
diameters
range
850–1500
μm.
Cyclic
testing
shows
after
1000
cycles,
melting
enthalpies
incurred
only
3.5%
decline
131.46
126.9
J
g
.
Success
here
overcomes
several
coincidental
drawbacks
fiber
manufacturing
delivers
first
example
scalable
roll‐to‐roll
produced
by
spinning
for
building
material
applications.
Chemical Communications,
Год журнала:
2024,
Номер
60(39), С. 5104 - 5135
Опубликована: Янв. 1, 2024
This
review
has
examined
the
advancements
and
challenges
in
development
of
transition
metal-based
electrocatalysts
for
alkaline
water
splitting
reaction
last
decade.
Energy Technology,
Год журнала:
2024,
Номер
unknown
Опубликована: Май 21, 2024
Low
thermal
conductivity
and
liquid
phase
leakage
impede
the
widespread
adoption
of
change
materials
(PCMs).
To
enhance
PCM
performance
practical
viability,
addressing
these
limitations
is
crucial.
Current
study
addresses
low
issues.
Enhanced
in
PCMs
achieved
by
adding
graphene
nanoplatelets
(GnPs),
while
expanded
graphite
(EG)
acts
as
a
leak‐proof
barrier.
The
composite
(ss‐NePCM)
developed
ultra‐sonication
followed
vacuum
impregnation
process.
samples
underwent
comprehensive
analysis:
(TEMPOs),
chemical
composition
(FTIR),
photo‐transmittance
(UV–Vis),
stability
(TGA).
results
show
that
with
0.6
wt%
GnP
(NePCM
3
)
has
highest
enhancement
≈112%
15
EG
(ss‐NePCM
diminishes
problem.
According
to
optical
assessment,
exhibits
notable
increase
absorbance
116%
higher
than
base
PCM.
However,
due
introduction
additives,
differential
scanning
calorimeter
(DSC)
detected
minor
variation
from
154
144.76
J
g
−1
latent
heat.
Furthermore,
demonstrates
reliability
following
250
heating
cooling
cycles.
ss‐NePCM
holds
promise
for
systems,
where
could
jeopardize
system
integrity.
