Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 8, 2025
Abstract
Rechargeable
sodium‐ion
batteries
(SIBs)
utilizing
NaPF
6
‐carbonate
electrolytes
consistently
exhibit
unsatisfactory
cycle
life
at
elevated
temperatures,
posing
a
significant
challenge
for
their
large‐scale
commercialization.
This
is
mainly
caused
by
the
instability
of
interphase
layers
especially
high
solubility
components
(especially
NaF)
in
carbonate
solvents.
In
this
study,
novel
additive
sodium
difluorobis(oxalato)
phosphate
(NaDFBOP)
synthesized
and
introduced
into
to
enhance
commercial
SIBs
composed
NaNi
1/3
Fe
Mn
O
2
(NFM)
cathode
hard
carbon
(HC)
anode,
particularly
50
°C.
Specifically,
NaDFBOP
enables
NFM/HC
retain
85.45%
initial
capacity
after
1000
cycles
30
°C
90.76%
500
Theoretical
calculations
reveal
that
DFBOP⁻
anions
enter
first
solvation
shell
Na
+
,
exhibits
strong
propensity
decomposition.
Characterizations
suggest
favors
formation
dissolution–resistant
robust
enriched
dissolution‐resistant
oxalate‐containing
species
inorganic
NaF,
which
have
mutual
binding
energy.
work
underscores
critical
importance
designing
functional
additives
constructing
interphases
temperature
SIBs.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 26, 2025
Abstract
Sodium
batteries
are
considered
promising
candidates
for
large‐scale
energy
storage
systems
due
to
abundant
sodium
resources
and
low
costs.
However,
suffer
from
serious
transition
metal
dissolution,
undesirable
side
reactions,
increased
thermal
runaway
risk
at
elevated
operation
temperatures.
Electrolyte,
as
a
key
component
of
batteries,
is
closely
related
temperature
tolerance.
Herein,
we
focus
on
recent
achievements
in
organic
liquid
electrolyte
high‐temperature
batteries.
First,
the
failure
mechanisms
discussed
Subsequently,
introduce
components
summarize
effective
optimization
strategies
including
salt
selection,
concentration
regulation,
solvents
optimization,
additives.
Finally,
further
directions
proposed.
It
believed
that
this
review
can
provide
whole
picture
insight
into
design
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 8, 2025
Abstract
Rechargeable
sodium‐ion
batteries
(SIBs)
utilizing
NaPF
6
‐carbonate
electrolytes
consistently
exhibit
unsatisfactory
cycle
life
at
elevated
temperatures,
posing
a
significant
challenge
for
their
large‐scale
commercialization.
This
is
mainly
caused
by
the
instability
of
interphase
layers
especially
high
solubility
components
(especially
NaF)
in
carbonate
solvents.
In
this
study,
novel
additive
sodium
difluorobis(oxalato)
phosphate
(NaDFBOP)
synthesized
and
introduced
into
to
enhance
commercial
SIBs
composed
NaNi
1/3
Fe
Mn
O
2
(NFM)
cathode
hard
carbon
(HC)
anode,
particularly
50
°C.
Specifically,
NaDFBOP
enables
NFM/HC
retain
85.45%
initial
capacity
after
1000
cycles
30
°C
90.76%
500
Theoretical
calculations
reveal
that
DFBOP⁻
anions
enter
first
solvation
shell
Na
+
,
exhibits
strong
propensity
decomposition.
Characterizations
suggest
favors
formation
dissolution–resistant
robust
enriched
dissolution‐resistant
oxalate‐containing
species
inorganic
NaF,
which
have
mutual
binding
energy.
work
underscores
critical
importance
designing
functional
additives
constructing
interphases
temperature
SIBs.
