Angewandte Chemie,
Год журнала:
2024,
Номер
137(1)
Опубликована: Окт. 2, 2024
Abstract
Contact
prelithiation
is
widely
used
to
compensate
for
the
initial
capacity
loss
of
lithium‐ion
batteries
(LIBs).
However,
low
utilization
Li
source,
which
suffers
from
deteriorated
contact
interfaces,
results
in
cycling
degeneration.
Herein,
Li−Ag
alloy‐based
artificial
electron
channels
(AECs)
are
established
source/graphite
anode
interfaces
promote
Li‐source
conversion.
Due
shielding
effect
alloy
(50
at
.
%
Li)
on
Li‐ion
diffusion,
dry‐state
interfacial
corrosion
restricted.
The
unblocked
electronic
conduction
across
AEC‐involved
interface
not
only
facilitates
conversion
but
also
accelerates
kinetics
during
wet‐state
process,
resulting
an
ultrahigh
(90.7
%).
Implementing
AEC‐assisted
a
LiNi
0.5
Co
0.2
Mn
0.3
O
2
pouch
cell
yields
35.8
increase
energy
density
and
stable
over
600
cycles.
This
finding
affords
significant
insights
into
construction
efficient
technology
development
high‐energy
LIBs.
Advanced Materials,
Год журнала:
2024,
Номер
36(41)
Опубликована: Авг. 17, 2024
Abstract
Metallic
lithium
is
the
most
competitive
anode
material
for
next‐generation
high‐energy
batteries.
Nevertheless,
extensive
volume
expansion
and
uncontrolled
Li
dendrite
growth
of
metal
not
only
cause
potential
safety
hazards
but
also
lead
to
low
Coulombic
efficiency
inferior
cycling
lifespan
Herein,
a
multifunctional
dendrite‐free
composite
(Li/SnS
2
)
proposed
through
an
in
situ
melt‐infusion
strategy.
In
this
configuration,
3D
cross‐linked
porous
S/Li
22
Sn
5
framework
facilitates
rapid
penetration
electrolytes
accommodates
during
repeated
−
plating
process.
Meanwhile,
lithiophilic
S
phases
with
+
transport
barrier
ensure
preferential
deposition,
effectively
avoiding
uneven
electron
distribution.
Moreover,
conductors
appropriate
bonding
ability
guarantee
charge
mass
transfer.
Most
importantly,
steady
skeleton
sufficient
inner
interfaces
(Li
whole
electrode,
realizes
redistribution
localized
free
electron,
contributing
decomposition
clusters,
induces
planar
deposition
model,
thus
restraining
generation
dendrites.
Consequently,
unprecedented
cyclability
over
6
500
h
under
ultrahigh
areal
capacity
10
mAh
cm
−2
current
rate
20
mA
achieved
prepared
anode.
assembled
Li/SnS
||LiFePO
4
(LFP)
pouch
full‐cells
demonstrate
remarkable
capability
convincing
more
than
000
cycles
at
C.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
Abstract
Anode‐free
lithium
batteries
have
attracted
a
lot
of
attention
due
to
several
appealing
attributes
such
as
high
energy
density,
low
cost,
and
enhanced
safety.
However,
these
tend
relatively
short
cycle
life
rapid
capacity
decay
because
the
loss
active
from
continuous
side
reactions.
In
this
review,
comprehensive
summary
anode‐free
developed
in
both
liquid
solid‐state
electrolyte
systems,
technical
challenges
that
plague
their
practical
applications,
well
corresponding
optimization
strategies
are
provided.
Special
is
paid
mechanistic
understanding
deposition,
stripping,
corrosion,
dissolution
behaviors.
addition,
advanced
characterization
tools
highlighted
better
understand
failure
mechanisms
batteries.
Lastly,
opportunities
current
battery
design
concluded
multiple
possibilities
available
for
high‐performance
future
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(38)
Опубликована: Июль 27, 2024
Abstract
Homogeneous
Li‐ion
flux
is
a
significant
precondition
of
uniform
deposition
in
Li
metal
batteries
(LMBs).
Numerous
methodologies
have
been
presented
for
homogenizing
before
based
on
the
features
deposition.
Separators
that
provide
transfer
channels
and
are
directly
exposed
to
anodes
attracted
rising
attention
their
role
guiding
regular
distribution.
More
novel
functional
separators
proposed
aiming
achieve
dendrite‐free
Herein,
factors
strategies
regulate
distribution
through
toward
LMBs
concentrated
on.
The
current
mechanisms
regulation
by
first
highlighted,
including
physical
properties,
interactions
with
electrolyte,
modification
solid‐state
electrolyte
interphase.
According
these
mechanisms,
separator
regulating
divided
into
three
methodologies,
typical
examples
introduced.
Finally,
limitations
suggestions
future
studies
presented,
inspire
engaged
researchers
newcomers
trigger
more
exciting
works
this
area.
Chemical Society Reviews,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
This
review
systematically
discusses
the
structure,
reaction
mechanisms,
and
challenges
as
well
countermeasures
for
high-voltage
Li-rich,
LiCoO
2
,
Ni-rich
cathode
materials,
attributing
their
anion
redox
activity
to
O
2p
non-bonding
states.
Abstract
Silicon
is
widely
recognized
as
a
promising
anode
material
for
all‐solid‐state
batteries
(ASSBs)
due
to
exceptional
specific
capacity,
abundant
availability,
and
environmental
sustainability.
However,
the
considerable
volume
expansion
particle
fragmentation
of
Si
during
cycling
lead
significant
performance
degradation,
limiting
its
practical
application.
Herein,
development
pre‐lithiated
Si‐based
composite
(c‐Li
1
Si)
presented,
designed
address
key
challenges
faced
by
anodes,
namely
severe
changes
low
electrochemical
stability.
The
c‐Li
anodes
are
prepared
incorporating
Li₁Si
powders
with
Li
6
PS
5
Cl
(LPSCl)
sulfide
solid
electrolyte
(SSE),
forming
dense
structure
that
enhances
conductivity
mitigates
structural
degradation.
ASSBs
Si‐60
exhibit
outstanding
performance,
including
excellent
rate
capability
capacity
retention
84.4%
after
1000
cycles
at
C
even
anode‐to‐cathode
ratios
(N/P
ratio)
1.68.
EIS
pressure
measurements
reveal
improved
reaction
kinetics
reduced
expansion.
X‐ray
micro‐CT
SEM
further
confirmed
introduction
LPSCl
effectively
alleviated
maintained
electrode
integrity,
contributing
enhanced
performance.
These
results
underscore
potential
overcome
intrinsic
limitations
offering
pathway
toward
high‐energy‐density
ASSBs.
The
practical
application
of
Li
metal
anodes
has
been
hindered
by
severely
irreversible
side
reactions
for
low
Coulombic
efficiency,
uncontrollable
growth
dendrites,
and
large
volume
change.
Herein,
we
report
subnanopore-rich
carbon
spheres
encapsulated
with
Sn
single
atoms
(Sn/CS@SC)
as
a
host
to
address
these
challenges.
Owing
the
high
affinity
atoms,
Sn/CS@SC
can
promote
storage
quasi-metallic
within
inner
void
space
other
than
direct
plating
metallic
on
outer
surface.
Moreover,
subnanopores
strong
spatial
confinement
effect
prevent
penetration
ester
electrolyte
reduced
reactions.
As
expected,
demonstrates
efficiency
99.8%
over
600
cycles.
full
cell
using
prelithiated
anode
LiNi0.8Co0.1Mn0.1O2
cathode
shows
capacity
retention
(~80%)
500
cycles
at
current
density.
