Combustion characteristics and fire risk assessment of EC/DMC/EMC electrolytes for Li-ion batteries
Journal of Energy Storage,
Год журнала:
2025,
Номер
110, С. 115308 - 115308
Опубликована: Янв. 6, 2025
Язык: Английский
Constructing PVDF‐Based Polymer Electrolyte for Lithium Metal Batteries by Polymer‐Induced Phase Structure Adjustment Strategy
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 18, 2025
Abstract
The
phase
separation
between
solvents
and
polymers
during
the
processing
leads
to
porous
structure
of
PVDF
electrolyte,
resulting
in
uneven
distribution
ion
channels,
accelerating
growth
lithium
dendrites.
Moreover,
various
crystal
structures
hinder
migration
Li
+
,
setting
obstacles
for
improvement
conductivity.
Here,
an
amorphous
polymer
system
(BPE)
with
excellent
salt
affinity
is
introduced
into
electrolyte
as
a
bridge
eliminate
structures.
densified
by
utilizing
properties
BPE
its
salt,
thus
homogenizing
channels.
Furthermore,
inhibited
crystallization
PVDF,
improving
conductivity
electrolyte.
obtained
(BPLE)
has
high
ionic
(1.6
×
10
−3
S
cm
−1
)
transference
number
(0.66)
at
room
temperature.
LiFePO
4
||Li
cell
assembled
BPLE‐1
achieved
initial
capacity
149
mAh
g
retention
rate
98%
(1C,
500
cycles,
RT).
At
current
density
2C,
battery
specific
142
exceeds
84%
after
800
cycles.
Язык: Английский
High Electrochemical Performance of Sodium-Ion Gel Polymer Electrolytes Achieved Through a Sandwich Design Strategy Combining Soft Polymers with a Rigid MOF
Energies,
Год журнала:
2025,
Номер
18(5), С. 1160 - 1160
Опубликована: Фев. 27, 2025
Sodium-ion
batteries
(SIBs)
are
considered
the
next-generation
candidates
for
partially
substituting
commercial
lithium-ion
in
future
energy
storage
systems
because
of
abundant
sodium/potassium
reserves
and
these
batteries’
cost-effectiveness
high
safety.
Gel
polymer
electrolytes
(GPEs)
have
become
a
popular
research
focus
due
to
their
advantages
terms
safety
performance
on
quasi-solid-state
sodium-ion
(QSSIBs).
Building
previous
studies
that
incorporated
MOF
fillers
into
polymer-based
gel
electrolytes,
we
propose
3D
sandwich
structure
which
materials
first
pressed
thin
films
then
coated
protected
by
materials.
Using
this
approach,
achieved
an
ion
conductivity
1.75
×
10−4
S
cm−1
at
room
temperature
transference
number
0.69.
Solid-state
using
film
electrolyte
exhibited
long
cycling
stability
2
C
current
density,
retaining
75.2%
specific
capacity
after
500
cycles.
Язык: Английский
PVDF-HFP nanofiber quasi-solid electrolyte for fast charging and dendrites-free lithium batteries
Journal of Power Sources,
Год журнала:
2025,
Номер
640, С. 236779 - 236779
Опубликована: Март 17, 2025
Язык: Английский
Engineering polyvinylidene fluoride–based lithium-ion battery separators via blending modification
Academia Engineering,
Год журнала:
2025,
Номер
2(1)
Опубликована: Март 24, 2025
Lithium-ion
batteries
(LIBs)
have
become
a
prevalent
trend
and
viable
energy
storage
solution
due
to
their
exceptional
density,
long
lifespan,
wide
operating
temperature
range,
elevated
voltage.
Notably,
among
LIB
separator
materials,
polyvinylidene
fluoride
(PVDF)
has
attracted
attention
for
its
mechanical,
thermal,
chemical
properties,
as
well
ease
of
fabrication.
This
article
delineates
the
technical
background,
manufacturing
process,
research
advances
PVDF-based
membranes
through
physical
blending
modification,
encompassing
inorganic
blending,
organic
inorganic/organic
blends.
Moreover,
we
suggest
future
avenues
high-performance
PVDF
enhance
renewable
resource
utilization.
Overall,
this
work
provides
significant
references
fabrication
separators,
aiding
in
advancement
sustainable
alternatives
within
circular
economy.
Язык: Английский