Russian Journal of Inorganic Chemistry,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 10, 2024
Abstract
The
fast-growing
requirements
for
high-energy-density
Li-ion
batteries
(LIBs)
have
prompted
the
research
and
development
of
Li-metal
(LMBs)
because
Li
metal
has
a
high
theoretical
specific
capacity
3860
mA
h
g
–1
low
redox
potential
(−3.04
v.s.
standard
hydrogen
electrode,
SHE).
However,
dendrite
formation
during
plating
stripping
exerted
an
enormous
impedance
in
its
commercial
application.
Consequently,
it
is
imperative
to
exploit
effective
strategies
eliminate
existing
issues.
Three-dimensional
(3D)
ordered
anode
architectures
with
large
surface
area
void
space,
which
are
capable
lowering
current
density
affording
confined
space
accommodate
plating,
consequently
suppressing
ameliorating
undesirable
volume
changes.
More
importantly,
well-aligned
micro-channels
can
provide
fast
pathways
ion
transport
promote
uniform
plating.
Therefore,
fabricating
3D
expected
remarkably
boost
electrochemical
stability
performance
cycling.
Herein,
important
researches
on
design
LIBs,
including
flexible
anode,
summarized
detail.
Emphasis
laid
illuminating
mechanism
correlation
between
3D-ordered
microstructures
LMBs.
Furthermore,
challenges
forthcoming
opportunities
this
promising
field
explicitly
indicated.
It
anticipated
that
review
could
afford
beneficial
reference
initiate
further
innovation
practical
high-energy
safe
Quasi-solid
polymer
electrolytes
(QSPEs)
are
considered
a
promising
alternative
to
liquid
for
high-voltage
lithium
metal
batteries.
Herein,
we
present
their
properties
and
performance
supported
on
polyolefin
microporous
separators.
These
QSPEs
consist
of
poly(vinylidene-fluoride-co-hexafluoropropylene)
matrix,
ethylene
carbonate
as
plasticizer,
various
salt
mixtures,
including
bis(fluorosulfonyl)imide
(LiFSI),
bis(oxalate)borate
(LiBOB),
LiNO3
solid
electrolyte
interface-forming
additive.
They
exhibit
an
ionic
conductivity
ca.
1
mS
cm-1
at
room
temperature
excellent
resistance
against
dendrites,
attributed
the
presence
tough
separator.
The
effect
mixture
composition
plating/stripping
electrooxidation
stability
was
studied
in
detail,
showing
that
LiNO3,
while
having
clear
positive
performance,
may
also
adversely
affect
oxidative
electrolyte,
accelerating
degradation
cathode/electrolyte
interface.
with
binary
LiFSI/LiBOB
mixtures
were
tested
LiNi0.8Mn0.1Co0.1O2||Li
monolayer
pouch
cell
cathode
area
capacity
2.5
mAh
cm-2.
This
delivered
initial
close
200
g-1
C/20,
150
C/1,
80%
retention
after
100
cycles
25
°C.
results
demonstrate
viability
QSPEs,
based
poly(vinylidene-fluoride-co-hexafluoropropylene),
carbonate,
LiFSI
LiBOB,
application
quasi
solid-state
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 23, 2025
Abstract
The
ultrathin
Lithium
(Li)
alloying
anode
(≤
50
µm)
plays
a
key
role
in
advancing
rechargeable
Li
metal
batteries
into
practical
use,
especially
because
of
the
insurmountable
difficulties
developing
pure
anode.
Herein,
thickness‐controllable
(≈5.5–30
and
topological
Li‐SbF
3
@Cu
with
embedded
dual
Li‐based
(Li
Sb
Li‐Cu)
alloys
outmost
LiF‐rich
layer
is
prepared
for
high‐energy‐density
under
high
utilization.
Upon
cycling,
surface
together
inner
lithiophilic
sites
ferroconcrete‐like
Li‐Cu
skeletons,
synergistically
regulates
deposition/dissolution
behaviors
Li/electrolyte
interface
evolution.
assembled
symmetric
cell
can
cycle
stably
over
1200
h
at
1
mA
cm
−2
/1
mAh
,
realize
an
ultrahigh
discharge/charge
depth
53.6%
2
/3
.
Moreover,
full
high‐Li‐capacity
LiCoO
cathode
(3.8
)
delivers
energy
density
394.5
Wh
kg
−1
impressive
cycling
reversibility
low
negative/positive
electrode
capacity
(N/P)
ratio
1.5.
All
findings
provide
rewarding
avenue
toward
industrial
application
high‐Li‐utilization
anodes
batteries.
Nano Letters,
Год журнала:
2024,
Номер
24(44), С. 13972 - 13980
Опубликована: Окт. 23, 2024
Lithium
(Li)
metal
batteries
face
challenges,
such
as
dendrite
growth
and
electrolyte
interface
instability.
Artificial
layers
alleviate
these
issues.
Here,
cellulose
nanocrystal
(CNC)
nanomembranes,
with
excellent
mechanical
properties
high
specific
surface
areas,
combine
polyvinylidene-hexafluoropropylene
(PVDF-HFP)
porous
membranes
to
form
an
artificial
solid
interphase
(SEI)
layer.
The
structure
of
PVDF-HFP
equalizes
the
electric
field
near
metallic
lithium
surfaces.
modulus
CNC
(6.2
GPa)
effectively
inhibits
growth,
ensures
uniform
flow
ions
electrode,
dendrites
during
cycling.
synergy
polarity
β-phase
poly(vinylidene
fluoride)
(PVDF)
provides
over
1000
h
stability
for
Li//Li
batteries.
Moreover,
Li//LiFePO
