Despite
great
success
in
design
and
preparation
of
phase
change
microcapsules,
the
balance
anti-leakage,
high
thermal
conductivity,
multi-source
energy
exploitation
are
still
difficult
to
be
achieved
simultaneously,
which
remains
long-standing
bottleneck
for
efficient
safe
harvesting.
In
this
work,
a
multifunctional
double-shell
PANI
microcapsule
(MC)
encapsulating
material
(PCM)
was
designed
fabricated
via
an
emulsion
photopolymerization
strategy.
Thanks
outstanding
anti-permeability,
photo-thermal
property
PANI,
as-prepared
achieves
three
synergetic
effects
simultaneously:
low
leakage
rate,
solar
exploitation.
The
encapsulated
PCM
has
almost
unchanged
Tm
Tc,
negligible
(≤0.2
wt%)
normalized
melting
solidified
enthalpies
after
100
heating/cooling
cycles.
presence
polyaniline
shell
improves
conductivity
efficiency
providing
promising
strategy
extend
single
source
energy.
addition
heat
storage,
microcapsules
also
possess
anticorrosion
property,
is
particularly
attractive
coating
applications.
Accordingly,
resulted
could
act
as
candidate
with
all-in-one
features
temperature
regulated
properties,
durability
anti-corrosion
would
stimulate
wide
application
energy-saving
anticorrosive
smart
coatings.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(3), P. 4089 - 4098
Published: Jan. 10, 2024
Flexible
electrothermal
composite
phase
change
materials
(PCMs)
are
promising
candidates
for
portable
thermotherapy.
However,
a
great
challenge
remains
to
achieve
high
PCM
loading
while
maintaining
reasonable
flexibility.
Herein,
the
polypyrrole-decorated
melamine
foam
(PPy@MF)
was
fabricated
and
thereafter
applied
confine
binary
mixtures
composed
of
high-enthalpy
long-chain
polyethylene
glycol
(PEG4000)
its
short-chain
homologue
(PEG200)
make
novel
PPy@MF-PEG4000+200
PCM.
At
up
74.1%
PEG4000
latent
heat
energy
storage
density
150.1
J/g,
remained
flexible
at
temperature
(−20
°C)
far
below
transition
point
thanks
plasticine
effect
PEG200.
The
also
demonstrated
good
Joule
heating
performance,
providing
fast
from
28
70
°C
low
voltages
(4.5–6.0
V).
could
be
stored
efficiently
released
maintain
composites
proper
temperature.
performance
undisturbed
during
curved
or
repeated
bending,
showing
potential
used
personal
thermal
management
SusMat,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 23, 2024
Abstract
The
miniaturization,
integration,
and
high
data
throughput
of
electronic
chips
present
challenging
demands
on
thermal
management,
especially
concerning
heat
dissipation
at
interfaces,
which
is
a
fundamental
scientific
question
as
well
an
engineering
problem—a
death
problem
called
in
semiconductor
industry.
A
comprehensive
examination
interfacial
resistance
has
been
given
from
physics
perspective
2022
Review
Modern
Physics
.
Here,
we
provide
detailed
overview
materials
perspective,
focusing
the
optimization
structure
compositions
interface
(TIMs)
interact/contact
with
source
sink.
First,
discuss
impact
conductivity,
bond
line
thickness,
contact
TIMs.
Second,
it
pointed
out
that
there
are
two
major
routes
to
improve
transfer
through
interface.
One
reduce
TIM's
(
R
TIM
)
TIMs
strategies
like
incorporating
conductive
fillers,
enhancing
treatment
techniques.
other
c
by
improving
effective
contact,
strengthening
bonding,
utilizing
mass
gradient
alleviate
vibrational
mismatch
between
source/sink.
Finally,
such
challenges
theories,
potential
developments
sustainable
TIMs,
application
AI
design
also
explored.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(3), P. 362 - 362
Published: Jan. 29, 2024
In
this
study,
electrically
insulating
polyolefin
elastomer
(POE)-based
phase
change
materials
(PCMs)
comprising
alumina
(Al2O3)
and
graphene
nanoplatelets
(GNPs)
are
prepared
using
a
conventional
injection
moulding
technique,
which
exhibits
promising
applications
for
solar
energy
storage
due
to
the
reduced
interfacial
thermal
resistance,
excellent
stability,
proficient
photo-thermal
conversion
efficiency.
A
synergistic
interplay
between
Al2O3
GNPs
is
observed,
facilitates
establishment
of
thermally
conductive
pathways
within
POE/paraffin
wax
(POE/PW)
matrix.
The
in-plane
conductivity
POE/PW/GNPs
5
wt%/Al2O3
40
wt%
composite
reaches
as
high
1.82
W
m−1K−1,
marking
remarkable
increase
≈269.5%
when
compared
with
that
its
unfilled
POE/PW
counterpart.
exceptional
heat
dissipation
capabilities,
critical
management
in
electronics.
Moreover,
POE/PW/GNPs/Al2O3
composites
demonstrate
outstanding
electrical
insulation,
enhanced
mechanical
performance,
efficient
transportation.
Under
80
mW
cm−2
NIR
light
irradiation,
temperature
approximately
65
°C,
notable
20
°C
improvement
blend.
pragmatic
uncomplicated
preparation
method,
coupled
stellar
performance
composites,
opens
avenue
broader
possibility
developing
flexible
PCMs
applications.
Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(13), P. 1077 - 1077
Published: June 24, 2024
Inorganic
hydrated
salt
phase
change
materials
(PCMs)
hold
promise
for
improving
the
energy
conversion
efficiency
of
thermal
systems
and
facilitating
exploration
renewable
energy.
Hydrated
salts,
however,
often
suffer
from
low
conductivity,
supercooling,
separation,
leakage
poor
solar
absorptance.
In
recent
years,
compounding
salts
with
functional
carbon
has
emerged
as
a
promising
way
to
overcome
these
shortcomings
meet
application
demands.
This
work
reviews
progress
in
preparing
carbon-enhanced
composites
management
applications.
The
intrinsic
properties
their
are
firstly
introduced.
Then,
advantages
various
general
approaches
PCM
briefly
described.
By
introducing
representative
loaded
nanotubes,
fibers,
graphene
oxide,
graphene,
expanded
graphite,
biochar,
activated
multifunctional
carbon,
ways
that
one-dimensional,
two-dimensional,
three-dimensional
hybrid
enhance
comprehensive
thermophysical
affect
behavior
is
systematically
discussed.
Through
analyzing
enhancement
effects
different
fillers,
rationale
achieving
optimal
performance
composites,
including
both
conductivity
stability,
summarized.
Regarding
applications
hydrate
use
electronic
devices,
buildings
human
body
highlighted.
Finally,
research
challenges
further
overall
PCMs
pushing
towards
practical
potential
directions
It
expected
this
timely
review
could
provide
valuable
guidelines
development
stimulate
concerted
efforts
diverse
communities
promote
widespread
high-performance
composites.
