Abstract
Although
O3‐type
layered
oxides
are
promising
candidates
as
cathode
materials
in
sodium‐ion
batteries
(SIBs),
it
is
still
plagued
by
poor
stabilities
owing
to
the
inevitable
degradation
of
Na‐O
bond
and
subsequent
side
reactions
exposed
moist
atmosphere.
Here,
a
new
high‐entropy
oxide
NaMn
0.4
Fe
0.3
Ni
0.2
M
0.1
O
2
(HE‐NaMFN,
=
Cu/Ti/Zn/Sn/Sb)
developed
modulation
on
0.5
.
This
process
involves
implantation
five
metal
atoms
with
different
d
‐orbital
electron
numbers
into
oxide,
increasing
energy
gap
between
p
orbitals
(Δ
‐
)
from
0.8
1.0
eV,
associated
reduced
hybridization
for
resultant
oxide.
Benefited
weakened
metal‐O
interaction,
has
suppressed
configuration
an
enhanced
binding
energy,
showing
ultrastable
feature
after
air
exposure
up
30
days.
Consequently,
discloses
improved
structure
reversibility,
achieving
reversible
capacity
156
mAh
g
−1
retention
90%,
good
rate
capability
long‐term
cycling
stability
sodium
storage.
Abstract
Sodium‐ion
batteries
(SIB),
stemming
from
the
abundance
of
sodium
resources
and
their
cost‐effectiveness,
have
positioning
them
favorably
a
potential
candidate
for
stationary
energy
storage
public
electric
vehicles.
As
an
intermediary
grid
system
output
terminals
charging
station,
fast‐charging
performance
has
actually
become
crucial
metric,
which
greatly
relates
to
station
utilization
cost‐
time‐efficient.
Besides,
capacity
is
also
relevant
long‐term
stable
operation
transportation.
Given
remarkable
advancements
in
SIBs
reported
recently,
review
about
this
topic
scope
timely
important
at
present.
In
study,
bottlenecks
are
first
assessed,
after
that,
comprehensive
overview
employed
strategies
improving
capacities
three
aspects:
structures
design,
reaction
mechanism
regulation,
optimization
solvation
structure
interfacial
property
given.
Finally,
challenges
prospects
further
research
toward
proposed.
The
authors
hope
will
provide
deep
understanding
design
principles
inspire
more
endeavors
conquer
practicability
issue
fields.
Chemical Communications,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Room-temperature
sodium–sulfur
(RT
Na–S)
batteries
can
allow
an
ultrahigh
specific
capacity
and
a
high
energy
density
but
unfortunately
suffer
from
lot
of
intractable
challenges
sulfur
cathodes.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Phase
transition
serves
as
an
ordinary
behavior
occurring
during
the
high‐temperature
calcination
process,
while
it
becomes
quite
complicated
in
Li‐rich
materials
composed
of
rhombohedral
phase
LiTMO
2
(TM:
Ni,
Mn)
with
R
m
space
group
and
monoclinic
Li
TMO
3
C
2/
group.
Yet
to
be
firmly
elucidated
is
how
precursor
transforms
into
(
)‐Li
)
compound
what
precise
conversion
mechanism
between
these
two
phases.
This
work
systematically
elaborates
structural
evolution
Li/O
incorporation
calcination,
proposes
a
mechanism.
A
series
characterizations
on
rearrangement
detailed
analysis
provide
insights
comprehension
this
transition,
i.e.,
metal
(TM)
vacancies
induced
by
interlayer
TM
ions
migration
function
primary
reason
driving
transformation
from
.
offers
novel
concept
for
regulation
cathodes.
Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
A
universal
strategy
is
proposed
to
convert
unqualified
Prussian
blue
analogues
(PBAs)
into
sodium
layered
oxide
cathodes
via
a
fast
sintering
process,
achieving
both
economic
and
environmental
benefits.
ABSTRACT
A
large
number
of
spent
sodium‐ion
batteries
(SIBs)
will
be
produced
as
SIBs
become
more
widely
used.
However,
components
SIBs,
such
the
cathode
Prussian
white
Na
2
Mn[Fe(CN)
6
],
are
toxic
and
hazardous,
leading
to
water
soil
pollution
posing
a
threat
human
health.
Therefore,
recycling
is
important
meaningful.
Here,
we
use
phytic
acid‐based
low‐melting
mixture
solvents
(LoMMSs)
for
efficient
recovery
hazardous
at
mild
temperatures.
Results
show
that
highest
leaching
efficiency
from
could
reach
94.7%
by
polyethylene
glycol
200:phytic
acid
(14:1)
80°C
24
h
with
liquid/solid
ratio
50:1.
Furthermore,
metal
extracted
leachate
found
precipitate
when
used
anti‐solvent,
ammonium
hydroxide
achieving
precipitation
89.3%
room
temperature.
O3-type
layered
oxide
materials
are
regarded
as
optimal
cathode
candidates
for
sodium-ion
batteries
(SIBs)
on
account
of
their
exceptional
energy
density.
Nevertheless,
the
rapid
decline
in
capacity
resulting
from
instability
interface
structure
represents
a
significant
challenge
to
practical
implementation
these
materials.
In
this
study,
we
propose
an
innovative
method
modify
NaNi0.33Fe0.33Mn0.33O2
(NFM)
material
by
applying
cross-linked
polymer
(CLP)
coating.
X-ray
photoelectron
spectroscopy
(XPS)
analysis
demonstrates
that
CLP
coating
effectively
inhibits
decomposition
electrolyte
(CEI)
membrane
course
cycling,
leading
substantial
improvement
stability
electrode
material's
interface.
Moreover,
oxygen-containing
groups
within
can
compete
with
propylene
carbonate
(PC)
solvent
molecules
Na+
coordination,
reducing
coordination
between
and
PC
molecules.
This
process
facilitates
more
efficient
diffusion
Na+,
thereby
enhancing
rate
performance.
Consequently,
CLP-coated
NFM
(NFM@CLP)
exhibit
enhanced
electrochemical
After
300
cycles
at
25
°C,
NFM@CLP
retains
72.36%
its
capacity,
compared
62.59%
pristine
NFM.
Even
elevated
temperatures
(65
°C),
retention
remains
high
63.84%
after
200
cycles,
whereas
drops
3.65%.
full-cell
tests
(vs
hard
carbon),
also
exhibits
better
(85.07%
150
cycles).
study
offers
effective
simple
approach
performance
SIBs,
providing
unique
insights
into
advanced
storage
