ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(3), С. 3489 - 3501
Опубликована: Янв. 12, 2024
To
satisfy
the
demand
for
high
safety
and
energy
density
in
storage
devices,
all-solid-state
lithium
metal
batteries
with
solid
polymer
electrolytes
(SPE)
replacing
traditional
liquid
separators
have
been
proposed
are
increasingly
regarded
as
one
of
most
promising
candidates
next-generation
systems.
In
this
study,
poly(vinylidene
fluoride)-hexafluoropropylene/lignosulfonic
acid
(PVDF-HFP/LSA)
composite
electrolyte
(CPE)
membranes
a
micro
area
interface
wetting
structure
were
successfully
prepared
by
incorporating
LSA
into
PVDF-HFP
matrix.
The
enhanced
interaction
between
polar
functional
group
C═O
N-methylpyrrolidone
(NMP)
hinders
evaporation
solvent
NMP,
thus
creating
structure,
which
offers
flexible
region
chain
segment
movement
enlarging
amorphous
zone
PVDF-HFP.
From
results
IR
Raman
spectroscopy,
it
was
found
that
presence
induced
unique
ion
transport
channels
created
massive
aggregated
pair
(AGG)
contact
(CIP)
cluster
structures
composed
Li+
multiple
TFSI–
and,
at
same
time,
effectively
reduced
crystallinity
electrolyte,
hence
further
contributing
to
diffusion.
As
result,
rate
2
C,
Li|CPE-15|LiFePO4
solid-state
battery
delivers
an
initial
discharge-specific
capacity
134.9
mAh
g–1
maintains
stability
retention
84%
during
400
charge–discharge
cycles
while
Li|CPE-0|LiFePO4
fails
after
only
few
rate.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Фев. 19, 2024
The
pursuit
of
safer
and
high-performance
lithium-ion
batteries
(LIBs)
has
triggered
extensive
research
activities
on
solid-state
batteries,
while
challenges
related
to
the
unstable
electrode-electrolyte
interface
hinder
their
practical
implementation.
Polymer
been
used
extensively
improve
cathode-electrolyte
in
garnet-based
all-solid-state
LIBs
(ASSLBs),
it
introduces
new
concerns
about
thermal
stability.
In
this
study,
we
propose
incorporation
a
multi-functional
flame-retardant
triphenyl
phosphate
additive
into
poly(ethylene
oxide),
acting
as
thin
buffer
layer
between
LiNi
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 13, 2024
Abstract
Solid‐state
lithium
metal
batteries
(SSLMBs)
with
poly
(ethylene
oxide)
(PEO)‐based
electrolytes
have
increasingly
become
one
of
the
most
promising
battery
technologies
due
to
high
energy
density
and
safety.
However,
adverse
electrode/electrolyte
interface
compatibility
issues
hinder
further
application.
Herein,
a
PEO‐based
composite
solid
electrolyte
excellent
anode
cathode
interfacial
is
designed
via
coordination
modulation
strategy
induced
by
difluorobis(oxalato)phosphate
(DFBOP).
By
utilizing
this
electrolyte,
robust
inorganic‐rich
interphase
involving
LiF,
Li
x
PO
y
F
z
,
P─O
components
in
situ
generated
on
(Li)
LiNi
0.8
Co
0.1
Mn
O
2
(NCM811)
surfaces
forceful
among
PEO,
bis(trifluoromethanesulphonyl)imide,
DFBOP
subsequent
adjustment
front
orbital
levels.
It
contributes
homogeneous
deposition
an
effective
impediment
PEO
oxidation
decomposition
at
voltage,
promoting
superior
stability.
Consequently,
Li‐symmetric
cells
modified
can
achieve
stable
cycle
over
7000
h
0.2
mA
cm
−2
.
Specially,
unique
organic–inorganic
interpenetration
network
structure
enables
4.5
V
Li/NCM811
steadily
100
cycles,
discharge
capacity
215.4
mAh
g
−1
initial
coulombic
efficiency
91.23%.
This
research
has
shed
light
design
from
perspective
regulation
construct
high‐performance
SSLMBs.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(3), С. 3489 - 3501
Опубликована: Янв. 12, 2024
To
satisfy
the
demand
for
high
safety
and
energy
density
in
storage
devices,
all-solid-state
lithium
metal
batteries
with
solid
polymer
electrolytes
(SPE)
replacing
traditional
liquid
separators
have
been
proposed
are
increasingly
regarded
as
one
of
most
promising
candidates
next-generation
systems.
In
this
study,
poly(vinylidene
fluoride)-hexafluoropropylene/lignosulfonic
acid
(PVDF-HFP/LSA)
composite
electrolyte
(CPE)
membranes
a
micro
area
interface
wetting
structure
were
successfully
prepared
by
incorporating
LSA
into
PVDF-HFP
matrix.
The
enhanced
interaction
between
polar
functional
group
C═O
N-methylpyrrolidone
(NMP)
hinders
evaporation
solvent
NMP,
thus
creating
structure,
which
offers
flexible
region
chain
segment
movement
enlarging
amorphous
zone
PVDF-HFP.
From
results
IR
Raman
spectroscopy,
it
was
found
that
presence
induced
unique
ion
transport
channels
created
massive
aggregated
pair
(AGG)
contact
(CIP)
cluster
structures
composed
Li+
multiple
TFSI–
and,
at
same
time,
effectively
reduced
crystallinity
electrolyte,
hence
further
contributing
to
diffusion.
As
result,
rate
2
C,
Li|CPE-15|LiFePO4
solid-state
battery
delivers
an
initial
discharge-specific
capacity
134.9
mAh
g–1
maintains
stability
retention
84%
during
400
charge–discharge
cycles
while
Li|CPE-0|LiFePO4
fails
after
only
few
rate.
