Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 21, 2025
Abstract
Sodium‐ion
batteries
(SIBs)
exhibit
better
low‐temperature
electrochemical
performance
than
lithium‐ion
(LIBs)
due
to
sodium's
unique
physical
and
chemical
properties.
However,
SIBs
face
significant
challenges
at
extremely
low
temperatures,
such
as
−40
°C,
where
electrolyte
salting
out,
reduced
ionic
conductivity,
increased
viscosity
hinder
performance.
Optimizing
formulations
is
critical
overcoming
these
issues.
This
study
introduces
1,3‐Dioxolane
(DOL)
a
co‐solvent
enhance
under
conditions.
DOL
significantly
improves
NaPF
6
solubility
by
forming
strong
interactions
with
anions.
Additionally,
it
modifies
the
solvation
structure,
increasing
anion
participation
promoting
formation
of
NaF‐rich
solid
interphase
(SEI)
on
anode
surface.
These
enhancements
are
supported
experimental
data
computational
simulations.
The
addition
also
cycling
stability
commercial
Sn
microparticles
(μ‐Sn)
temperatures.
μ‐Sn
achieves
high
reversible
capacity
248.3
mAh
g
−1
°C
after
1500
cycles
0.5
A
,
outperforming
electrolytes
without
DOL.
work
provides
novel
approach
for
designing
advanced
electrolytes,
enabling
more
reliable
sodium‐ion
battery
in
extreme
environments.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 20, 2024
Abstract
Anode‐free
sodium
metal
batteries
represent
great
promising
as
high‐energy‐density
and
resource‐rich
electrochemical
energy
storage
systems.
However,
the
savage
growth
of
continuous
consumption
hinder
its
stable
capacity
output.
Herein,
ordered
flower‐edges
zinc
on
Al
substrate
can
induce
high‐entropy
solid
electrolyte
interphase
(SEI)
to
adjust
uniform
deposition
extremely
reduce
with
ultrahigh
initial
Coulombic
efficiency
(97.05%)
for
prolong
cycling
life.
Theoretical
experimental
studies
have
demonstrated
that
electron‐donating
property
exposed
edge
sites
between
(100)
(101)
facets
in
flower
enhance
anion
adsorption
onto
inner
Helmholtz
plane
accelerating
interface
decomposition.
Additionally,
edges
serve
homogeneous‐nucleating
template,
leading
thin
inorganic‐rich
SEI
layer
(18
nm,
ZnF
2
,
NaZn
13
NaF,
Na
CO
3
)
discrete
multicomponent
distribution,
so
fast
high‐flux
ions
transport
field,
thereby
reducing
critical
nucleation
barrier
promoting
high
density
(7.36
×
10
N
cm
−2
pyknotic
(3
mAh
22
µm).
The
assembled
anode‐free
exhibit
stability
(86%,
90
cycles)
under
cathode
loading
(32
mg
).
Moreover,
anode‐less
single‐layer
pouch
a
durable
retention
99%
after
600
cycles.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(29), P. 18572 - 18581
Published: Jan. 1, 2024
High
stability
and
non-flammable
SMBs
are
achieved
by
adding
BSTFA
toTEP
solvent.
Dendrimer
observations
solvation
structure
calculations
of
the
cell
in
situ
optical
microscopy
molecular
dynamics
simulations.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(48)
Published: Aug. 6, 2024
Abstract
The
practical
usage
of
Na
metal
anode
is
severely
prohibited
by
the
instability
natively
formed
solid
electrolyte
interface
(SEI)
layer
and
uncontrollable
dendrite
growth,
inducing
short
cycle
life
serious
safety
concerns.
Herein,
phosphorylated
covalent
organic
frameworks
(P‐COF)
first
synthesized
rationally
used
to
construct
robust
artificial
for
stabilization.
modified
demonstrates
high
rate
performance
(5
mA
cm
−2
)
ultralong
cycling
lifespan
(1800
h)
with
dendrite‐free
deposition
in
carbonate‐based
electrolyte.
And
assembled
Na|Na
3
V
2
(PO
4
(NVP)
cell
also
reveals
extraordinarily
stable
at
5
C
4000
cycles
a
quite
low
decay
0.002%
per
cycle.
Moreover,
Na|NVP
full
areal
capacity
(2.0
mAh
thin
(30
µm)
still
prolonged
over
500
even
under
harsh
condition
negative‐to‐positive‐capacity
(N/P)
ratio
2:3.
Furthermore,
pouch
an
ultrathick
cathode
(≈17
mg
manifests
significantly
performance.
This
work
facile
effective
strategy
toward
reliable
batteries.
Chemical Communications,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 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.
