Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(14), P. 1229 - 1229
Published: July 20, 2024
Separator
modification
is
a
promising
method
for
advancing
lithium
metal
anodes;
however,
achieving
homogeneous
lithium-ion
flux
and
uniform
plating/stripping
processes
remains
challenging.
In
this
work,
we
introduce
novel
approach
by
developing
composite
separator,
termed
PVDF-INO,
which
integrates
In(NO3)3
(INO)
into
polyvinylidene
fluoride
(PVDF)
to
create
12
μm
thick
layer.
This
addition
significantly
enhances
the
interaction
between
separator
electrolyte,
creating
lithophilic
matrix
that
ensures
an
even
distribution
of
ions.
ion
promotes
consistent
deposition
dissolution,
resulting
in
durable,
dendrite-free
anode.
Moreover,
PVDF-INO
not
only
affinity
with
electrolytes
but
also
maintains
stable
flux,
essential
reliable
safe
battery
operation.
Consequently,
it
sustains
operation
over
750
h
Li||Li
symmetric
configuration,
low
overpotential
just
28
mV.
Additionally,
full
cells
equipped
LiFePO4
cathodes
exhibit
superior
cycling
performance,
maintaining
capacity
retention
92.9%
after
800
cycles
at
1
C.
work
paves
way
significant
advancements
field
batteries,
offering
solution
longstanding
energy
storage
challenges.
Small,
Journal Year:
2024,
Volume and Issue:
20(47)
Published: Aug. 9, 2024
Developing
3D
hosts
is
one
of
the
most
promising
strategies
for
putting
forward
practical
application
lithium(Li)-based
anodes.
However,
concentration
polarization
and
uniform
electric
field
traditional
result
in
undesirable
"top
growth"
Li,
reduced
space
utilization,
obnoxious
dendrites.
Herein,
a
novel
dual-gradient
host
(GDPL-3DH)
simultaneously
possessing
gradient-distributed
pore
structure
lithiophilic
sites
constructed
by
an
electrospinning
route.
Under
synergistic
effect
sites,
GDPL-3DH
exhibits
gradient-increased
electrical
conductivity
from
top
to
bottom.
Also,
Li
preferentially
uniformly
deposited
at
bottom
with
typical
"bottom-top"
mode
confirmed
optical
SEM
images,
without
Consequently,
ultra-long
lifespan
5250
h
symmetrical
cell
2
mA
cm
Nanomaterials,
Journal Year:
2024,
Volume and Issue:
14(14), P. 1229 - 1229
Published: July 20, 2024
Separator
modification
is
a
promising
method
for
advancing
lithium
metal
anodes;
however,
achieving
homogeneous
lithium-ion
flux
and
uniform
plating/stripping
processes
remains
challenging.
In
this
work,
we
introduce
novel
approach
by
developing
composite
separator,
termed
PVDF-INO,
which
integrates
In(NO3)3
(INO)
into
polyvinylidene
fluoride
(PVDF)
to
create
12
μm
thick
layer.
This
addition
significantly
enhances
the
interaction
between
separator
electrolyte,
creating
lithophilic
matrix
that
ensures
an
even
distribution
of
ions.
ion
promotes
consistent
deposition
dissolution,
resulting
in
durable,
dendrite-free
anode.
Moreover,
PVDF-INO
not
only
affinity
with
electrolytes
but
also
maintains
stable
flux,
essential
reliable
safe
battery
operation.
Consequently,
it
sustains
operation
over
750
h
Li||Li
symmetric
configuration,
low
overpotential
just
28
mV.
Additionally,
full
cells
equipped
LiFePO4
cathodes
exhibit
superior
cycling
performance,
maintaining
capacity
retention
92.9%
after
800
cycles
at
1
C.
work
paves
way
significant
advancements
field
batteries,
offering
solution
longstanding
energy
storage
challenges.
