Batteries,
Journal Year:
2024,
Volume and Issue:
10(10), P. 363 - 363
Published: Oct. 13, 2024
Although
phase
change
materials
(PCMs)
exhibit
effective
performance
in
the
thermal
management
of
lithium-ion
batteries
(LIBs),
their
development
is
limited
by
low
conductivity
and
susceptibility
to
leakage
during
solid–liquid
transition.
To
address
these
challenges
enhance
capabilities,
this
study
introduces
a
novel
composite
material
(CPCM)
synthesized
physically
mixing
paraffin
(PA),
expanded
graphite
(EG),
bacterial
cellulose
(BC).
The
CPCMs
with
varying
BC
proportions
evaluated,
impact
on
temperature
control
battery
systems
(BTMS)
assessed.
results
show
that
addition
EG
significantly
improves
CPCM,
reaching
value
1.39
W·m−1·K−1.
This
also
enhances
uniformity
distribution
within
module
reduces
CPCM
leakage.
By
comparing
variations
under
different
operating
conditions,
it
was
found
intricate
network
structure
promotes
uniform
distribution,
effectively
mitigating
rise.
Consequently,
maximum
difference
were
maintained
below
47
°C
4
°C,
respectively.
Compared
system
without
at
3C
discharge
rate,
cell
temperature,
reduced
32.38%,
26.92%,
34.94%,
These
findings
provide
valuable
insights
for
design
optimization
BTMS.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 20, 2025
Abstract
The
stability
of
the
lithium‐metal/solid
electrolyte
interface
remains
a
critical
challenge
in
development
all‐solid‐state
lithium‐metal
batteries
(ASSLMBs),
as
it
directly
influences
their
cycling
performance,
rate
capability,
and
safety.
Here,
thin,
flexible,
lithium‐stable
sulfide
membrane
is
presented
with
high
ionic
conductivity
(3.25
×
10
−3
S
cm
−1
)
low
electronic
(1.45
−9
at
room
temperature,
prepared
an
AlCl
3
coating
low‐cost
wet
process.
situ
formation
lithiophilic
Li‐Al
alloy
lithiophobic
LiCl
layer
creates
stable
dual‐layer
structure,
effectively
suppressing
Li‐dendrite
growth
enhancing
Li‐transport
across
interface.
Symmetric
Li/Li
cells
this
coated
exhibit
exceptional
stability,
operating
for
over
10000
h
0.5
mA
−2
.
ASSLMBs
assembled
LiNi
0.8
Co
0.1
Mn
O
2
cathode
metallic
lithium
anode
excellent
highlighting
potential
strategy
to
stabilize
Li/solid
expedite
commercialization
ASSLBs.
Processes,
Journal Year:
2025,
Volume and Issue:
13(1), P. 232 - 232
Published: Jan. 15, 2025
Dual-ion
batteries
(DIBs)
were
demonstrated
as
a
promising
technology
for
large-scale
energy
storage
due
to
their
low
cost,
recyclability,
and
impressively
fast
charge
capability.
Graphite
commonly
used
cathode
material
in
DIBs,
however,
suffers
from
poor
compatibility
with
commercial
Li-ion
electrolytes
graphite
anodes,
making
it
difficult
directly
utilize
the
well-established
infrastructure
batteries.
Herein,
we
report
small
aromatic
amine
molecule
4,4′,4″-tris(diphenylamino)triphenylamine
(N4)
functioning
compatible
anion
host
EC-containing
electrolyte.
With
an
average
discharge
voltage
of
3.6
V
(vs.
Li+/Li),
N4
electrode
delivers
reversible
specific
capacity
108
mAh/g,
which
is
much
higher
than
29
mAh/g
at
same
condition.
The
high
retention
91.3%
was
achieved
after
500
cycles
1
A/g.
also
exhibited
good
rate
performance.
Via
different
characterization
techniques
like
Fourier
transform
infrared
spectroscopy
X-ray
photoelectron
spectroscopy,
mechanism
revealed
conversion
between
quaternary
cations,
accompanied
by
PF6−
(de-)insertion.
As
consequences,
assembled
N4||graphite
DIB
w
showed
90
within
1.5–4.1
V,
cycling
stability
98%
40
cycles.
Decent
performance
well.
This
work
provides
new
insights
into
designing
affordable
DIBs.
