Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 2, 2025
Abstract
In
situ
polymerized
polyether
electrolytes
are
promising
for
solid‐state
Li
metal
batteries
due
to
their
high
ionic
conductivity
and
excellent
interfacial
contact.
However,
practical
application
is
hindered
by
dendrite
formation,
degradation,
limited
oxidative
stability.
Herein,
we
propose
an
in
polyfluorinated
crosslinked
electrolyte
(PDOL‐OFHDBO),
synthesized
copolymerizing
1,3‐dioxolane
(DOL)
with
2,2′‐(2,2,3,3,4,4,5,5‐octafluorohexane‐1,6‐diyl)bis(oxirane)
(OFHDBO)
as
a
crosslinker.
The
electron‐withdrawing
groups
endow
PDOL‐OFHDBO
enhanced
stability
compatibility,
while
reducing
the
solvation
power
of
polymer
matrix
promote
anion‐derived
inorganic‐rich
solid
interphase
uniform
deposition.
Consequently,
exhibits
wide
electrochemical
window
(>5.6
V)
enables
long‐term
stable
plating/stripping
over
1100
h.
Furthermore,
Li||LiNi
0.8
Co
0.1
Mn
O
2
(NCM811)
full
cells
utilizing
demonstrate
outstanding
cycling
high‐loading
cathodes
(≈3.8
mAh
cm
−2
)
thin
anodes
(50
µm),
achieving
capacity
retention
95.5%
89.1%
100
cycles
at
cut‐off
voltages
4.3
4.5
V,
respectively.
Remarkably,
Ah‐level
Li||NCM811
pouch
deliver
impressive
specific
energy
401.8
Wh
kg
−1
,
highlighting
potential
batteries.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 13, 2025
Abstract
Solid‐state
lithium
metal
batteries
(SLMBs)
have
broad
application
prospects
due
to
their
inherently
high
energy
density
and
safety.
Among
solid‐state
electrolytes
(SEs),
in
situ
polymerized
the
advantages
of
intimate
interfacial
contact
significant
reduction
interface
resistance,
but
they
can
still
suffer
from
uncontrolled
growth
dendrites
that
compromises
long‐term
stability
cyclability
batteries.
Here,
a
PDOL@ZnO/PVDF‐HFP
SE
consisting
poly(vinylidene
fluoride‐co‐hexafluoropropylene)
(PVDF‐HFP)
fiber
separator
modified
with
zinc
oxide
(ZnO)
nanowires
is
reported
as
skeleton
poly
(1,3‐dioxolane)
(PDOL)
filler.
The
piezoelectrically
generated
electric
field
by
extrusion
ZnO
during
Li
plating
reduces
localized
+
concentration
promotes
uniform
flux,
effectively
inhibiting
dendrites.
As
result,
LiFePO
4
/Li
cell
based
on
shows
long
stable
cycle
life
at
30
°C
reversible
capacity
144.0
mAh
g
−1
for
600
cycles
0.2
C
91.3%
retention.
Remarkably,
pouch
cells
be
stably
cycled
200
cycles.
proposed
electrolyte
piezoelectric
effects
opens
new
perspectives
guide
practical
high‐performance
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 30, 2024
Abstract
The
Li
+
transport
kinetics
and
electrochemical
stability
of
advanced
solid‐state
metal
batteries
(SLMBs)
are
seriously
limited
by
the
actual
electrolyte
compositions.
Here,
a
novel
polyether‐based
(PTGDOX)
is
presented
through
in
situ
co‐polymerization
integrating
1,3‐dioxane
with
multifunctional
1,3,5‐triglycidyl
isocyanurate
additive.
group
PTGDOX
not
only
provides
abundant
coordinating
sites
for
transfer
restricts
movement
anions,
but
also
prompts
beneficial
inorganic‐rich
solid
interface
on
electrode.
As
result,
exhibits
remarkably
increased
ionic
conductivity
0.48
mS
cm
−1
at
30
°C
reasonable
Li‐ion
transference
number
0.68,
enabling
Li||Li
symmetric
cells
to
stably
cycle
over
2000
h
1
mAh
−2
.
Meanwhile,
assembled
Li||LiFePO
4
exhibit
97.4%
capacity
retention
after
700
cycles
3
C
excellent
thermal
stability.
Moreover,
demonstrates
interfacial
compatibility
high‐voltage
LiNi
0.8
Co
0.1
Mn
O
2
cathode.
such,
this
work
facile
accessible
strategy
designing
interface‐stable
polymer
electrolytes
achieving
practical
dendrite‐free
SLMBs.
Particuology,
Journal Year:
2024,
Volume and Issue:
95, P. 49 - 61
Published: Aug. 14, 2024
The
microstructure
of
electrodes
significantly
affects
the
performance
lithium-ion
batteries
(LiBs),
and
using
bi-diameter
active
particles
is
a
simple
but
effective
way
to
regulate
commercial
LiB
electrodes.
Herein,
optimize
cathode
particles,
microstructure-resolved
model
developed
validated.
results
indicate
that
randomly
packing
optimal
when
electrolyte
diffusion
limitation
mild,
as
it
provides
highest
volume
fraction
materials.
Under
strong
limitations,
layered
with
small
near
separator
preferred.
This
because
current
collector
have
low
lithiation
state.
Besides,
optimizing
random
can
further
improve
energy
density.
For
energy-oriented
LiBs,
(0.2)
preferred
due
higher
power-oriented
high
(0.8)
better
reduces
limitations.
work
should
serve
guide
design
electrode
for
achieving
high-performance
LiBs.
