Battery energy,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 30, 2024
ABSTRACT
The
current
study
explores
the
synthesis
and
electrochemical
performance
of
potassium
birnessite
as
a
cathode
material
for
sodium‐ion
batteries
(SIBs),
achieved
through
partial
ion
exchange
resulting
from
deintercalation
followed
by
sodium
intercalation
during
first
cycle.
Three
samples
(KB400,
KB500,
KB600)
are
synthesized
using
sol–gel
method
subsequently
calcined
at
different
temperatures
to
evaluate
influence
crystal
water
K
+
ions
on
structural
stability
their
performance.
X‐ray
diffraction
analysis
confirms
formation
with
high
crystallinity.
Additionally,
fluorescence,
photoelectron
spectroscopy,
thermogravimetric
employed
verify
chemical
composition
oxidation
states.
Among
samples,
KB500
exhibits
most
favorable
performance,
achieving
specific
capacity
175
mAh
g
–1
C/10
when
cycled
within
voltage
range
1.6–4.2
V.
Long‐term
cycling
tests
narrower
potential
2–3.6
V
demonstrate
promising
values
110
in
retention
90%
over
80
cycles.
presence
interlayer
is
crucial
enhancing
diffusion.
These
findings
suggest
that
could
serve
SIBs,
providing
structurally
stable
option
energy
storage
applications.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 19, 2025
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 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.
P2-type
Na0.5Mn0.95Ni0.05O2
as
the
cathode
for
sodium-ion
batteries,
has
a
relatively
high
theoretical
specific
capacity,
but
its
unstable
crystal
structure
and
undesirable
phase
transitions
lead
to
rapid
capacity
decay.
In
this
work,
Mg-B-O
coated
microspheres
have
been
synthesized
via
liquid-phase
method
based
on
solvothermal
Na0.5Mn0.95Ni0.05O2.
The
coating
layer
significantly
improves
electrochemical
performance,
including
rate
capability,
cycle
stability.
Within
voltage
window
of
2.0-4.0
V,
could
exhibit
an
initial
93.2
mAh
g-1
at
current
density
500
mA
g-1,
maintains
74.6
after
cycles,
with
retention
80.0%.
effectively
inhibits
formation
Na2CO3
surface,
enhancing
air
stability,
reducing
Jahn-Teller
effect
induced
by
Mn3+,
well
ensuring
fast
Na+
diffusion
kinetics.
This
work
provides
new
strategy
designing
layered
batteries
both
cycling
Nanoscale,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Residual-alkali-derived
Na
2
Ti
3
O
7
coatings
boost
electrolyte
wettability
and
electrochemical
performance
of
a
layered
oxide
cathode
for
sodium-ion
batteries.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 3, 2025
Binders
play
a
pivotal
role
in
the
performance
of
sodium-ion
battery
(SIB)
cathodes,
but
traditional
binders
often
struggle
to
balance
broad
compatibility,
high
ionic
conductivity,
superior
binding
strength,
and
environmental
sustainability.
In
this
study,
universal
cellulose
triacetate
(TAC)-based
binder
(TAC-MMT)
composed
TAC
natural
montmorillonite
(MMT)
is
designed
facilitate
rapid
Na+
transport
pathways
establish
robust
hydrogen-bonding
network.
This
innovative
TAC-MMT
features
unique
chemical
structure
that
achieves
conductivity
through
self-enrichment
fast-transport
mechanism,
while
its
strength
attributed
crosslinks
between
proton
acceptors
(C═O)
donors
(-OH)
MMT.
More
importantly,
outstanding
solubility
film-forming
properties
contribute
stable
electrode
protection
compatibility
with
high-voltage
SIB
cathodes.
Benefiting
from
these
advantages,
Na3V2(PO4)2O2F
(NVPOF)
electrodes
demonstrate
exceptional
performance,
including
capacity
retention
95.2%
over
500
cycles
at
5C
rate
response
up
15C.
The
versatility
further
confirmed
NaNi1/3Fe1/3Mn1/3O2
Na0.61[Mn0.27Fe0.34Ti0.39]O2
study
highlights
potential
biomass-based
as
sustainable
effective
solution
for
advancing
high-performance
batteries.
Layered
oxides
are
considered
promising
cathode
materials
for
sodium-ion
batteries
(SIBs)
due
to
their
high
energy
density,
flexible
compositions,
and
low
cost.
However,
they
encounter
significant
challenges,
such
as
multiphase
transitions
structural
instability
at
voltages,
which
limit
large-scale
practical
application.
In
this
study,
we
employed
a
dual
modification
strategy
involving
complex
composition
doping
phosphate
coating
fabricate
the
Na0.67Ni0.255Mn0.645(TiMgCuZn)0.1O2@phosphate
(D-NNM).
The
lattice
distortion
induced
by
optimizes
overall
properties
of
cathode,
while
forms
robust
electrode
interface
through
stable
P-O
bonds.
This
comprehensive
stabilizes
phase
interfacial
structure,
thereby
enhancing
Na+
transport
mitigating
mechanical
degradation
surface
reactions
voltages.
Consequently,
D-NNM
exhibited
an
initial
capacity
136.9
mA·h·g-1
with
average
potential
3.45
V
maintained
85%
after
60
cycles
4.4
V,
twice
that
pristine
cathode.
demonstrated
faster
diffusion
kinetics
voltage
without
any
particle
cracks
observed
even
50
cycles.
offers
protection
layered
from
bulk
provides
insights
into
design
density
cathodes
SIBs.