Journal of Applied Polymer Science,
Год журнала:
2024,
Номер
142(11)
Опубликована: Дек. 20, 2024
ABSTRACT
The
practical
usage
of
thermoplastic
polyurethane
(TPU)
has
been
significantly
hindered
by
its
well‐known
tendency
to
pose
a
high
fire
hazard
due
the
release
substantial
heat
and
toxic
volatiles.
Here,
binary
nanostructure
B‐LDH‐C
based
on
boron
nitride
(BN)
nanosheets
layered
double
hydroxide
(LDH)
was
fabricated
as
flame‐retarded
filler
for
TPU.
Specifically,
addition
3.0
wt%
B‐LDH‐C,
results
in
significant
reductions
44.7%
peak
rate,
14.6%
total
release,
56.5%
smoke
production
rate.
In
addition,
CO
yield
is
reduced
38.4%.
These
indicate
toxicity.
Moreover,
TG‐IR
test
points
out
marked
hindrances
combustible
(hydrocarbons,
esters,
etc)
gases
(aromatic
compounds,
HCN).
collectively
demonstrate
effectiveness
improving
safety
TPU,
which
pertaining
dual
roles
B‐LDH‐C.
research
could
inspire
facile
fabrication
structures,
enhancing
their
potential
polymer‐matrix
composites
other
applications.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 28, 2024
Abstract
Thermal
management
systems
for
power
batteries
based
on
phase
change
materials
(PCM)
are
limited
by
low
heat
transfer
efficiency,
leakage
issues,
and
high
rigidity,
most
of
them
cannot
meet
the
needs
all‐climate
thermal
management.
A
double‐layer
flexible
material
(FPCM)
sleeve
structure
is
proposed
in
this
study
first
time.
Innovations
both
design
have
enhanced
adaptability
system.
The
outer
layer
FPCM
achieves
conductivity
(4.23
W
m
−1
K
)
electrical
(0.95
S
),
inner
insulation
(22.76
MΩ)
flexibility,
contact
resistance
(TCR)
between
battery
measured
to
be
only
0.15
°C
,
significantly
improved
performance.
Experimental
results
show
that
at
30
ambient
temperature,
5
C
discharge,
system
reduces
maximum
temperature
14.5
°C,
from
61.4
46.9
compared
natural
convection.
Additionally,
during
heating,
heating
rates
7.0,
8.3,
8.7
min
−20,
−10,
0
respectively,
extending
discharge
duration
32.5%,
65.9%,
33.6%.
Batteries,
Год журнала:
2025,
Номер
11(2), С. 50 - 50
Опубликована: Янв. 26, 2025
Pure
phase
change
materials
(PCMs)
have
drawbacks
such
as
low
thermal
conductivity
and
poor
physical
properties
like
flammability,
which
limit
their
further
application
in
battery
management
systems.
This
paper
introduces
an
innovative
flame-retardant
composite
material
(CPCM)
made
from
paraffin,
expanded
graphite,
chitosan
(CS),
ammonium
polyphosphate
(APP),
aluminum
hypophosphite
(AHP).
The
physicochemical
performance
of
CPCMs
with
five
different
ratios
9%,
12%,
15%,
18%,
21%
are
studied,
effects
safety
revealed.
results
show
that
the
combination
flame
retardants
CS,
APP,
AHP
exhibits
effective
synergistic
effects,
prepared
CPCM
good
effects.
outstanding
when
content
is
12%.
At
a
maximum
discharge
rate
3C,
compared
to
natural
air-cooling
conditions,
temperature
difference
controlled
within
safe
range
41
°C
below
5
°C,
respectively.
can
play
important
role
lithium-ion
batteries.
ABSTRACT
Flexible
phase
change
composites
(FPCCs)
have
garnered
significant
attention
for
their
ability
to
combine
high
latent
heat
capacity
with
mechanical
flexibility.
This
combination
enables
advanced
thermal
management
in
emerging
fields
such
as
flexible
electronics,
soft
robotics,
and
wearable
technologies.
Traditional
materials
(PCMs)
excel
energy
absorption
release.
However,
rigidity
limits
applicability
the
sectors
above.
Existing
reviews
largely
focus
on
encapsulation
methods
traditional
PCM
applications,
leaving
a
gap
literature
concerning
flexibility
enhancement
strategies
FPCC‐specific
applications.
review
seeks
address
this
by
presenting
comprehensive
timeline
of
FPCC
development,
elucidating
principles
capacity,
systematically
reviewing
recent
advancements
field.
Emphasis
is
placed
design
at
both
structural
level,
fiber
foam
configurations,
including
physical
blending
molecular
engineering.
Performance
comparisons
are
provided,
evaluating
FPCCs
terms
storage
Furthermore,
explores
diverse
applications
storage,
transfer,
conversion,
release,
underscoring
potential
cutting‐edge
sectors.
By
highlighting
FPCCs'
versatility
interdisciplinary
aims
inspire
further
research
integration
into
domains
requiring
solutions.
Journal of The Electrochemical Society,
Год журнала:
2024,
Номер
171(6), С. 060522 - 060522
Опубликована: Июнь 3, 2024
The
rising
energy
density
and
widespread
use
of
lithium-ion
batteries
(LIBs)
pose
a
growing
safety
challenge,
marked
by
the
potential
for
fires
explosions.
Given
unique
combustion
characteristics
LIBs,
need
efficient
prompt
fire
suppression
is
paramount.
Here
we
explore
mechanisms
LIBs
fires,
emphasizing
critical
design
principles
effective
fire-extinguishing
agents
evaluating
various
agents,
including
gaseous,
dry
powders,
water-based,
aerosol-based,
composite-based
elucidating
their
effectiveness
in
suppressing
fires.
Noteworthy
such
as
C
6
F
12
O
water-based
solutions
are
highlighted
superior
extinguishing
cooling
capabilities.
Water-based
show
promise,
exhibiting
capacity
anti-flash
properties.
Despite
certain
limitations,
review
underscores
necessity
identifying
an
ideal
agent
that
thermally
conductive,
electrically
insulating,
cost-effective,
non-toxic,
residue-free,
capable
absorbing
toxic
gases.
We
conclude
discussing
perspectives
outlooks,
synergy
between
innovative
strategies
to
ensure
high
standards
current
future
LIB-based
technologies.
