ChemistrySelect,
Journal Year:
2025,
Volume and Issue:
10(9)
Published: March 1, 2025
Abstract
Solid‐liquid
phase
change
materials
(PCMs)
made
from
calcium
chloride
hexahydrate
(CaCl
2
·6H
O)
offer
benefits
such
as
significant
latent
heat
during
change,
high
storage
efficiency,
low
preparation
costs,
a
nearly
constant
temperature
exothermic
process,
and
environmentally
friendly
attributes.
However,
they
also
face
challenges
like
poor
thermal
conductivity,
susceptibility
to
leakage,
supercooling,
separation.
The
melt
impregnation
method
prepared
shape‐stable
composite
PCMs
using
expanded
vermiculite
(EV)
CaCl
O
raw
materials.
layered
pore
structure
of
EV
can
be
used
an
encapsulation
matrix
prevent
the
leakage
liquid
phase.
Adding
1
wt%
strontium
(SrCl
nucleating
agent
3
copper
nanoparticle
conductivity
enhancer
reduce
supercooling
by
8
°C
increase
0.2092
W/(m·K).
kinetic
equation
effectively
describes
non‐isothermal
crystallization
process.
An
in
cooling
rate
creates
hysteresis
effect
on
crystallization;
faster
rate,
lower
at
which
begins
shorter
duration
required
for
complete.
Both
SrCl
nanoparticles
activation
energy,
is
essential
reason
lowering
O.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 1, 2025
Abstract
The
efficient
capture,
conversion,
and
storage
of
solar
energy
present
significant
promise
for
advancing
green
utilization.
However,
pristine
phase
change
materials
(PCMs)
are
inherently
inadequate
optical
capture
absorption.
To
improve
photothermal
conversion
properties,
PCMs
metal‐organic
frameworks
derived
Co
nanoparticle‐anchored
carbonized
hollow
fiber
advantageously
integrated.
robust
carbon
tubular
structure
promises
thermal
storage,
fast
phonon
transfer,
excellent
durability
structural
stability
after
long
heating‐cooling
cycles.
Plasmonic
nanoparticles
broadband‐absorbing
high
graphitized
synergistically
enhance
light
harvesting
in
composite
PCMs,
achieving
94.38%
efficiency
(100
mW
cm
−2
).
This
integration
enables
the
simultaneous
generation
electrical
under
randomly
incident
radiation.
Attractively,
designed
photothermoelectric
system
steadily
realizes
a
continuous
output
voltage
309.8
mV
current
70.0
mA
advantageous
integrated
design
strategy
provides
constructive
insights
developing
next‐generation
toward
systems.
Small,
Journal Year:
2023,
Volume and Issue:
20(12)
Published: Nov. 10, 2023
Abstract
As
one
of
the
important
directions
solar
energy
utilization,
construction
composite
photothermal
phase
change
materials
(PCM)
with
reasonable
network
support
and
low
leakage
in
simple
method
is
to
solve
transient
availability
achieve
long‐lasting
output.
Here,
a
multifunctional
silylated
bacterial
cellulose
(BC)/hydroxylated
carbon
nanotube
(HCNT)/polyethylene
glycol
(PEG)
(SBTP)
film‐based
PCM
cross‐linked
structure
prepared
by
one‐step
synthesis.
The
formation
achieves
enhancement
BC
network,
prominent
dispersion
HCNT
direct
introduction
perfect
interlocking
PEG.
Therefore,
optimal
SBTP
film
exhibits
high
thermal
enthalpy
145.1
J
g
−1
,
efficiency
over
94%,
robust
shape
stability
<1.2%.
It
also
displays
conversion
80
°C,
storage
394
s
excellent
stability.
Thus,
it
can
demonstrate
maximum
output
voltage
423
mV
power
density
30.26
W
m
−2
under
three
irradiations
when
applied
solar–thermal–electric
field.
Meanwhile,
apply
management
cell
light‐emitting
diode
(LED)
chip,
convert
waste
heat
into
electricity,
demonstrating
multi‐scene
application
capability.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 17, 2024
Abstract
Integrating
solar
thermal
conversion
with
phase
change
materials
(PCMs)
offers
a
promising
pathway
for
continuous
energy
generation
zero‐carbon
footprint.
However,
substantial
infrared
radiation
losses
at
elevated
temperatures
often
hinder
the
efficiency
of
such
integrated
systems.
Inspired
by
thermoregulation
mechanisms
polar
bears,
this
work
introduces
composite
PCMs
spectrally
selective
absorption
to
enhance
storage
efficiency.
These
(CPCMs),
featuring
densely
packed
SiC
ceramic
grains
high
porosity,
exhibit
conductivity
up
14
W
m
−1
K
and
an
density
195.1
kJ
kg
.
The
incorporation
nanoparticle‐coated
foil
induces
plasmonic
effect
that
increases
absorptivity
90.57%
reduces
emissivity
from
71.94%
7.47%.
Consequently,
is
significantly
increased
54.56%
81.65%
500
K,
effectively
addressing
challenges
associated
high‐temperature
storage.
Additionally,
low
c
(PNC),
combined
inherent
heat
properties
PCMs,
enables
stealth
functionality.
multifunctional
CPCMs
demonstrate
considerable
potential
advancing
technologies
other
heat‐related
applications.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2023,
Volume and Issue:
11(35), P. 13187 - 13197
Published: Aug. 22, 2023
Phase
change
materials
(PCMs)
with
superior
solar-thermal
harvest
and
efficient
infrared
stealth
have
crucial
significance
for
modern
military
wearable
thermal
management
but
suffer
from
liquid
leakage,
poor
motion
detection,
intrinsic
solid
rigidity
of
conventional
solid–liquid
PCMs.
In
this
work,
highly
stretchable
phase
films
(MPSPCFs)
sensitive
harvest,
were
designed
using
Ti3C2Tx
MXene
nanosheets,
silicone
rubber
elastomers,
n-eicosane,
poly(vinyl
alcohol).
The
MPSPCF
exhibited
excellent
energy
storage
density
(107.1
J/g),
long-term
reversibility
(100
cycles),
flexibility.
lamination
natural
cotton
fabrics
enabled
effective
targets.
Furthermore,
due
to
the
introduction
MXene/PVA
layer,
processed
conversion
efficiency
(η
=
86.7%)
strain
sensing
(GF
4.45).
MPSPCF-based
thermoelectric
power
generation
system
was
designed,
which
generated
a
maximum
91.95
mW.
could
also
be
utilized
as
sensor
detect
human
movement,
including
bending
finger,
wrist,
elbow,
knee.
Combining
these
multiple
functions,
developed
in
work
has
great
potential
personal
applications
both
civil
fields,
offering
new
ideas
design
advanced
PCM
composites.
