Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 19, 2024
Lithium
metal
anodes
generally
suffer
from
uncontrolled
dendrite
growth
and
large
volume
change,
while
traditional
skeletons
such
as
Li13In3
Li22Sn5
are
too
heavy
discontinuous
to
offer
highly
efficient
structural
supportability
for
composite
Li
anodes.
In
this
work,
lightweight
stable
fiber-clustered
skeletons,
which
composed
of
LiB
fibers
jointed
Li22Si5
nanoparticles,
can
be
obtained
by
smelting
SiB6
powder
ingots.
addition
serving
both
ionic
electronic
conductors
anodes,
the
reduced
volumetric
fluctuation
offering
uniform,
heterogeneous,
continuous
architectures
suppressing
lithium
dendrites
with
low
nucleation
overpotential
diffusion
energy
barrier.
As
a
result,
Li–SiB6|Li–SiB6
symmetrical
cells
achieve
an
ultralong
lifespan
over
2000
h
cycling
at
1
mA
cm–2
cm–2.
Eventually,
Li–SiB6|LiFePO4
full
exhibit
long-term
cyclability
400
cycles
high-capacity
retention
94.5%
2
C,
Li–SiB6|LiCoO2
pouch
impressive
85%
capacity
after
350
cycles.
This
work
develops
new
strategy
strengthen
stability
fibrous
minimize
changes
dendrite-free
Chemical Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
A
3D
micro–nano
interface
was
formed
on
the
lithium
metal
anode
by
coating
composite
soap
fibers.
The
Li@DA
shows
prolonged
cycling
lifespan
due
to
enhanced
ion
conductivity
and
suppressed
volume
expansion
interface.
The
uncontrollable
growth
of
lithium
dendrites
and
the
unstable
interface
metal
anode/electrolyte
inhibit
potential
large-scale
applications
batteries.
polymer
artificial
solid-electrolyte
layer
shows
for
homogeneity
ion
flux
toward
a
electrode.
Herein,
we
design
an
ionic
conductive
stretchable
organogel
as
protective
via
in
situ
polymerization
on
active
anode,
which
can
accommodate
volume
changes
maintain
enhanced
interfacial
contact
with
propylene
carbonate
long
alkyl
ether
contribute
to
inducing
uniform
Li
deposition
enhance
transport.
In
addition,
membrane
adheres
tightly
effectively
eliminate
barriers
transport
at
heterogeneous
interfaces
has
strength
tending
suppress
dendrites.
As
result,
Li/Li
symmetric
cell
this
polymeric
protect
stably
cycle
over
800
h
under
1
mA
cm-2
without
increased
polarization
voltage,
while
corresponding
metal/LiFePO4
full
battery
delivers
high-capacity
retention
102.6,
127.7,
136.7%
after
244,
862,
976
cycles
0.3,
1,
2
C.
Furthermore,
equipped
also
longer
cycling
life
higher
reversible
specific
capacity
(130.24
mAh
g-1)
C
rate
performance
than
bare
battery.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 20, 2024
Abstract
Developing
high‐rate
lithium‐metal
battery
(LMB)
with
superior
energy
density
and
operation
durability
is
of
significance,
which
shows
enormous
potential
to
be
extensively
applied.
However,
the
commercialized
polyolefin
separators
exhibit
inferior
ability
resist
elevated
internal
temperature
inhibit
lithium
(Li)
dendrite
growth,
especially
for
LMBs
under
operations.
With
undesired
Li
+
‐anion
solvated
structures
in
electrolyte,
previous
separator
modification
strategies
usually
meet
a
dilemma
simultaneously
increase
transference
number
decrease
anion
number.
Here,
facile
scalable
strategy
are
reported
prepare
high‐performance
sandwiched
coated
by
single‐atom
zirconium
coordination
polyimide
aerogel
(Zr‐PIA)
layers,
can
achieve
stable
LMB
at
20
C
2700
cycles
capacity
retention
94.6%,
substantially
outperforming
its
counterpart
without
Zr.
Both
experimental
theoretical
studies
suggest
that
Zr‐PIA
layer
nanoporous
architecture
anion‐trapping
Zr
sites
effectively
sacrificing
overall
ion
conductivity,
enabling
rapid,
selective
uniform
flux
through
separator.
Such
features
facilitate
homogeneous
nucleation/deposition
mitigate
leading
enhanced
safety.
