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:
2024,
Volume and Issue:
20(27)
Published: Feb. 2, 2024
Abstract
Flexible
actuators
with
excellent
adaptability
and
interaction
safety
have
a
wide
range
of
application
prospects
in
many
fields.
However,
current
flexible
problems
such
as
fragility
poor
actuating
ability.
Here,
inspired
by
the
features
nacre
structure,
gradient
structured
actuator
is
proposed
mechanical
robustness
self‐healing
By
introducing
dynamic
boronic
ester
bonds
at
interface
between
MXene
nanosheets
epoxy
natural
rubber
matrix,
resulting
nanocomposites
ordered
micro‐nano
structures
exhibit
tensile
strength
(25.03
MPa)
satisfactory
repair
efficiency
(81.2%).
In
addition,
distribution
structure
endows
stable
photothermal
conversion
capability,
which
can
quickly
respond
to
near‐infrared
light
stimulation.
The
interlayer
covalent
bond
crosslinking
enables
good
response
speed
after
multiple
bending
capable
functional
damage.
This
work
introduces
bonding
into
actuators,
provides
reference
for
fabrication
soft
robots,
wearable,
other
healable
materials.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 23, 2024
Abstract
Although
optimizing
the
design
of
thermal
conductive
frameworks
to
promote
collection,
transportation,
and
storage
energy
in
composite
phase
change
materials
(CPCMs)
is
widely
studied,
research
on
oriented
layered
still
exploratory
stage.
Taking
inspiration
from
bidirectional
ice
template
strategy,
a
new
approach
proposed
influence
“oriented
micro‐unit”
conductivity
photothermal
mass
transfer
CPCMs.
Three
aramid
nanofibers
graphene
nanosheets
aerogels
with
different
structures
are
prepared
by
high‐energy
ball
milling
freezing.
The
enthalpy
values
within
range
146–152
J
g
−1
.
Photothermal
conversion
experiments,
hot
plate
solar‐thermal‐electric
experiments
multi‐physics
field
simulation
analysis
jointly
show
that
CPCMs
“back‐to‐back”
radial
structure
behaves
most
outstanding
ability
heat
performance,
an
increase
173.3%,
efficiency
91.9%,
maximum
output
voltage
303.3
mV.
opens
up
ideas
for
where
directional
required.
