Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
Due
to
their
good
chemical
and
thermal
stability,
high
heat
of
melting,
suitability
within
the
desired
temperature
range,
organic
phase
change
materials
(PCMs)
are
widely
used
for
cooling
electronic
devices,
new
energy
utilization,
solar
power
generation,
industrial
waste
recovery
processes,
greenhouse
construction.
However,
flammability
PCMs
has
limited
commercial
viability.
In
recent
years,
researchers
have
been
striving
improve
flame
retardancy
through
various
strategies,
raising
question
which
modification
strategy
best
enhances
different
types
composite
PCMs.
Therefore,
a
comprehensive
timely
review
is
needed
gain
insight
into
mechanism
action
retardant
properties
enhancement.
This
article
firstly
introduces
retardants
mechanism,
briefly
test
methods
commonly
in
laboratory
analysis
mechanism.
Secondly,
strategies
improving
systematically
summarized,
some
scenarios
application
flame‐retardant
introduced.
Eventually,
challenges
future
perspectives
evolution
presented.
expected
provide
insights
rational
design
ACS Sustainable Chemistry & Engineering,
Год журнала:
2023,
Номер
11(32), С. 11991 - 12003
Опубликована: Июль 28, 2023
Organic
phase
change
materials
(PCMs)
with
high
enthalpies
are
ideal
for
heat
storage
and
release,
which
expected
to
promote
the
utilization
of
thermal
energy
mitigate
shortage.
However,
inherent
inferior
light
absorbance,
poor
conduction,
weak
shape
stability
common
organic
PCMs
severely
restrict
absorption,
conversion,
solar
energy.
Herein,
high-quality
anisotropic
graphene
aerogels
derived
from
pre-oxidized
polyacrylonitrile
(OPAN)/graphene
oxide
(GO)
components
designed
first
time
by
unidirectional
freezing,
freeze-drying,
carbonization,
graphitization
at
2800
°C.
The
GO
component
efficiently
induces
orientation
OPAN
converts
it
graphitic
carbon
during
graphitization.
After
vacuum-assisted
impregnation
paraffin,
an
optimal
thermally
conductive
composite
(PCC)
possessing
enhanced
through-plane
conductivity
4.36
W
m–1
K–1
a
low
content
1.07
vol
%,
improved
stability,
fairly
latent
retention
99.7%
is
obtained.
Thanks
remarkable
absorbance
solar–thermal
conversion
capacities,
PCC
efficient
in
applications
solar–thermal–electrical
competitive
output
voltage
1181
mV
under
irradiation
simulated
5
kW
m–2.
By
releasing
stored
PCC,
can
continue
power
LED
lamp
even
after
stopped.
This
work
provides
feasible
methodology
fabricating
PCCs
application
conversion.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(35), С. 18832 - 18842
Опубликована: Янв. 1, 2023
Dual-supporting
flexible
composite
PCMs
with
a
uniform
heat
transfer
network
constructed
by
proposed
localized
dispersion
strategy
realized
an
impressive
performance
balance,
showing
great
potential
in
the
field
of
thermal
management.
