ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
17(1), P. 1286 - 1294
Published: Dec. 18, 2024
O3-type
layered
oxides
are
considered
promising
cathode
materials
for
next-generation
high-energy-density
sodium-ion
batteries
(SIBs).
However,
they
face
challenges,
such
as
low
rate
capacity
and
poor
cycling
stability,
which
arise
from
structural
deformation,
sluggish
Na+
diffusion
kinetics,
interfacial
side
reactions.
Herein,
a
synergistic
substitution
strategy
transitional
interstitial
sites
was
adopted
to
improve
the
structure
stability
kinetics
of
NaNi0.2Fe0.4Mn0.4O2.
Simulation
results
indicate
that
Co3+/B3+
codoping
effectively
lowers
migration
energy
barrier.
In
addition,
effect
provides
ultralow
lattice
strain
during
repeated
deintercalation/intercalation.
situ
characterization
verified
complex
phase
transformation
charge
discharge
suppressed,
thereby
significantly
improving
stability.
At
1
3
C,
retention
modified
O3–Na(Ni0.2Fe0.4Mn0.4)0.96Co0.04B0.02O2
(NFMCB)
improved
29.6%
1.7%
86.7%
88.6%
after
200
cycles,
respectively.
Even
at
10
it
could
still
produce
107.2
mAh·g–1.
Furthermore,
full
cells
assembled
with
this
material
commercial
hard
carbon
exhibit
high
density
316.2
Wh·kg–1
80.8%
cycles
C.
It
is
expected
will
facilitate
commercialization
oxides.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 12, 2024
Abstract
The
O3‐type
NaNi
0.5
Mn
O
2
(NM)
layered
cathode
in
sodium
ion
batteries
(SIBs)
undergoes
structural
distortion
and
capacity
degradation
during
cycling,
which
seriously
hinders
its
practical
application.
Herein,
lanthanum
(La)
is
employed
as
a
dopant
O3‐NaNi
0.5‐x
La
x
(NML)
cathodes,
triggered
an
“atomic
knife”
effect,
reducing
particle
size,
stabilizing
crystal
structure.
larger
ions
generated
strain
grain
growth
at
high
temperatures,
hindering
the
movement
of
boundaries
refining
size
NML
particles.
Comprehensive
characterizations
illuminated
doping‐induced
atomic
site
occupancy
phase
transformations
within
NML.
A
competitive
formation
between
perovskite
LaMnO
3
(LMO)
observed.
Spontaneously
formed
LMO
provides
surface
protection.
Moreover,
strong
La─O
bonds
expand
Na
interlayer
spacing,
enhancing
+
‐ion
diffusion.
Consequently,
cathodes
exhibit
superior
long‐term
cycling
stability
ultrahigh
rate
capacities
compared
to
pristine
NM
most
currently
reported
for
SIBs.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 5, 2025
Abstract
High‐voltage
sodium
metal
batteries
exhibit
excellent
advantages
in
low
cost
and
high
energy
density.
However,
the
poor
compatibility
of
traditional
electrolyte
with
(Na)
anode
high‐voltage
cathode
leads
to
interfacial
instability
potential
flammable
risks.
In
this
work,
a
nonflammable
is
developed
address
cycling
stability
4.7
V
battery
by
constructing
electrode–electrolyte
interphases
perchlorate
(NaClO
4
)
additive.
The
NaClO
additive
not
only
enables
efficient
Na
plating/stripping
an
average
Coulombic
efficiency
97.1%
Na||Cu
cells,
but
also
enhances
Na||Na
3
2
(PO
O
F
capacity
retention
97.9%
after
200
cycles.
superior
performance
attributed
ion‐conductivity
solid/cathode
interphases,
which
are
tuned
solvation
shell
.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 7, 2024
Abstract
Layered
transition
metal
oxide
(LTMO)
cathode
materials
of
sodium‐ion
batteries
(SIBs)
have
shown
great
potential
in
large‐scale
energy
storage
applications
owing
to
their
distinctive
periodic
layered
structure
and
2D
ion
diffusion
channels.
However,
several
challenges
hindered
widespread
application,
including
phase
complexities,
interface
instability,
susceptibility
air
exposure.
Fortunately,
an
impactful
solution
has
emerged
the
form
a
high‐entropy
doping
strategy
employed
research.
Through
implementation
doping,
LTMOs
can
overcome
aforementioned
limitations,
thereby
elevating
LTMO
highly
competitive
attractive
option
for
next‐generation
cathodes
SIBs.
Thus,
comprehensive
overview
origins,
definition,
characteristics
is
provided.
Additionally,
associated
with
SIBs
are
explored,
discussed
various
modification
methods
address
these
challenges.
This
review
places
significant
emphasis
on
conducting
thorough
analysis
research
advancements
about
utilized
Furthermore,
meticulous
assessment
future
development
trajectory
undertaken,
heralding
valuable
insights
design
synthesis
advanced
materials.
Chemical Science,
Journal Year:
2025,
Volume and Issue:
16(10), P. 4237 - 4244
Published: Jan. 1, 2025
Lithium-rich
cathode
materials
are
some
of
the
most
promising
choices
for
lithium-ion
batteries
due
to
their
excellent
energy
density
(>900
W
h
kg-1).
However,
severe
voltage/capacity
degradation
during
cycling
has
seriously
hindered
further
commercialization
lithium-rich
materials.
Current
research
efforts
focused
on
enhancing
voltage
and
capacity
retention.
Here,
coating
FeF3
specific
crystal
planes
is
utilized
achieve
a
trend
that
very
different
from
as-received
material.
Using
this
as
an
entry
point,
relationship
between
was
studied
in
depth.
The
oriented
coated
material
undergoes
more
drastic
phase
transition
cycling,
yet
its
decay
remains
basically
same
original
sample
(769.6
mV
after
200
cycles,
compared
723.5
sample).
Notably,
retention
rate
significantly
improved
(97%
cycles
vs.
75%
pristine
material).
These
findings
suggest
do
not
interact
with
each
other
does
seem
negatively
affect
voltage.
This
conclusion
can
also
be
extrapolated
oxygen-reducing
oxide
systems
help
understand
decay.
modification
generalized
applicable
This
study
proposes
an
efficient,
cost-effective,
and
industrially
scalable
electrode
modulation
strategy,
which
involves
directly
adding
a
small
amount
of
high
thermal
conductance
TiN
well
interface
compatible
WO3
to
NaNi1/3Fe1/3Mn1/3O2
(NaNFMO-TW)
cathode
slurry,
effectively
reduce
polarization
side
reactions,
the
Ohmic
heat
battery,
ultimately
significantly
improve
sodium-ion
storage
safety
performance
battery.
At
room
temperature
(RT)
1C
rate,
modified
NaNFMO-TW
exhibits
reversible
capacity
∼95
mAh
g-1
after
300
cycles,
with
retention
rate
82.6%,
being
higher
than
50.7%
for
NaNFMO.
Furthermore,
assembled
pouch
battery
retains
58.2%
cycles
at
RT&0.5C,
conspicuously
superior
46.1%
achieved
by
NaNFMO||HC
In
particular,
adiabatic
tests
infrared
imaging
reveal
marked
improvement
in
reduction
surface
∼1.3
∼2.2
°C
during
3C
charging
discharging,
respectively.
Moreover,
results
confirmed
enhancement
mechanism
NaNFMO
addition
WO3.
Such
strategy
provides
practical
method
improving
performance.
