Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 20, 2024
Abstract
Li‐rich
Mn‐based
cathode
materials
exhibit
a
remarkable
reversible
specific
capacity
exceeding
250
mAh
g
−1
,
positioning
them
as
the
preferred
choice
for
next
generation
of
high‐energy
density
lithium‐ion
battery
materials.
However,
their
inferior
rate
and
cycling
performance
pose
significant
challenges.
In
this
context,
material
incorporating
an
expanded
fast
Li‐ion
diffusion
network
has
been
successfully
synthesized.
This
advancement
involves
introduction
single‐layer
LiCo(Ni)O
2
with
high
coefficients
into
crystal
structure
cathode,
thereby
enhancing
performance,
achieving
impressive
212
at
5
C.
Furthermore,
can
effectively
isolates
Li
MnO
3
phase
domains,
structural
stability
during
anion
redox
process,
consequently
extending
electrochemical
limits.
Operating
within
voltage
range
2.1–4.6
V,
retention
reaches
80%
after
400
cycles,
decay
merely
0.74
mV
per
cycle.
innovative
utilization
provides
invaluable
insights
that
will
guide
development
strategies
aimed
unlocking
capability
in
layered
oxide
Chemical Science,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Jan. 1, 2024
We
comprehensively
review
the
research
advances
in
cation
migration
of
sodium
layered
oxides,
systematically
revealing
fundamental
mechanisms
and
practical
modulation
strategies
for
irreversible
leading
to
battery
failure.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
Lithium‐rich
layered
oxide
cathodes
(LLO)
are
renowned
for
their
high
specific
capacity
(>250
mAh
g−¹)
and
have
emerged
as
promising
candidates
lithium‐ion
batteries.
However,
significant
fades
voltage
decay
pose
challenges
to
commercialization,
primarily
due
the
degradation
of
original
structure.
In
this
study,
a
simple
rapid
approach
is
presented
that
combines
interfacial
engineering
particle
assembly
achieve
highly
stable
LLO
cathode.
This
cathode
features
single‐crystal
reassembled
into
porous
microsphere
structure,
along
with
surface
coating
polypropylene
phosphate
amide
(PPA)
formed
through
in
situ
cross‐linking
polyacrylic
acid
ammonium
polyphosphate,
deuterogenic
spinel
interface
layer.
The
dual
protective
coatings‐PPA
spinel‐effectively
inhibit
dissolution
transition
metals,
delay
structural
deterioration,
enhance
diffusion.
Additionally,
cross‐linked
PPA
layer
strengthens
interconnection
among
nanoparticles,
improving
stability
assembled
structures
while
mitigating
electrolyte
corrosion.
Consequently,
LLO@PPA
electrode
exhibits
excellent
retention
84.87%
over
500
cycles
at
0.5
C
shows
improvements
rate
performance.
work
offers
an
effective
modification
strategy
developing
next‐generation
lithium‐rich
enhanced
cycle
life.
The Journal of Physical Chemistry Letters,
Journal Year:
2024,
Volume and Issue:
unknown, P. 10068 - 10078
Published: Sept. 26, 2024
Lithium-rich
layered
oxides
(LRLOs)
are
regarded
as
promising
candidates
for
next-generation
cathode
materials
because
of
their
high
energy
density
derived
from
anionic
redox
activity.
Recent
years
have
seen
increasing
efforts
in
promoting
the
cyclability
LRLO
cathodes,
at
core
which
is
suppression
irreversible
internal
structural
evolution
during
cycling.
The
present
article
aims
to
provide
an
informative
perspective
on
design
strategies
related
issue
oxygen
release.
Emphasis
placed
underlying
chemistry
LRLOs
and
based
material
topology
that
can
mitigate
migration
surface.
We
speculate
these
insights
could
guide
researchers
developing
high-capacity
cathodes
with
intrinsically
reversibility
redox.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 20, 2024
Abstract
Li‐rich
Mn‐based
cathode
materials
exhibit
a
remarkable
reversible
specific
capacity
exceeding
250
mAh
g
−1
,
positioning
them
as
the
preferred
choice
for
next
generation
of
high‐energy
density
lithium‐ion
battery
materials.
However,
their
inferior
rate
and
cycling
performance
pose
significant
challenges.
In
this
context,
material
incorporating
an
expanded
fast
Li‐ion
diffusion
network
has
been
successfully
synthesized.
This
advancement
involves
introduction
single‐layer
LiCo(Ni)O
2
with
high
coefficients
into
crystal
structure
cathode,
thereby
enhancing
performance,
achieving
impressive
212
at
5
C.
Furthermore,
can
effectively
isolates
Li
MnO
3
phase
domains,
structural
stability
during
anion
redox
process,
consequently
extending
electrochemical
limits.
Operating
within
voltage
range
2.1–4.6
V,
retention
reaches
80%
after
400
cycles,
decay
merely
0.74
mV
per
cycle.
innovative
utilization
provides
invaluable
insights
that
will
guide
development
strategies
aimed
unlocking
capability
in
layered
oxide
