Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 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.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 15, 2024
Abstract
Anion‐reinforced
solvation
structure
favors
the
formation
of
inorganic‐rich
robust
electrode‐electrolyte
interface,
which
endows
fast
ion
transport
and
high
strength
modulus
to
enable
improved
electrochemical
performance.
However,
such
a
unique
inevitably
injures
ionic
conductivity
electrolytes
limits
fast‐charging
Herein,
trade‐off
in
tuning
anion‐reinforced
is
realized
by
entropy‐assisted
hybrid
ester‐ether
electrolyte.
sheath
with
more
anions
occupying
inner
Na
+
shell
constructed
introducing
weakly
coordinated
ether
tetrahydrofuran
into
commonly
used
ester‐based
electrolyte,
merits
accelerated
desolvation
energy
gradient
interface.
The
attributed
diverse
structures
induced
entropy
effect.
These
enhanced
rate
performance
cycling
stability
Prussian
blue||hard
carbon
full
cells
electrode
mass
loading.
More
importantly,
practical
application
designed
electrolyte
was
further
demonstrated
industry‐level
18650
cylindrical
cells.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(8), С. 4111 - 4118
Опубликована: Июль 29, 2024
Sodium-ion
batteries
(SIBs)
with
abundant
sodium
resources
have
been
considered
to
be
competitive
candidates
for
large-scale
energy
storage
systems.
However,
undesirable
instability
of
the
electrode/electrolyte
interface
(EEI)
at
electrode
surface
in
a
commercial
ester-based
electrolyte
results
unsatisfactory
electrochemical
performance
SIBs.
Herein,
robust
sulfur-containing
inorganic-rich
EEI
is
simultaneously
constructed
on
both
Prussian
blue
(PB)
cathode
and
hard
carbon
(HC)
anode
via
film-forming
additive,
named
sulfolane
(SL).
SL
largely
participates
inner
Na+
sheath,
weakening
coordination
Na+-solvent
accelerated
desolvation
inducing
additive-derived
interfacial
chemistry.
These
merit
improved
reversible
capacity,
rate
performance,
cycling
stability
HC||PB
full
cell
SL-containing
electrolyte.
More
importantly,
pouch
delivers
high
capacity
retention
78.3%
after
500
cycles,
demonstrating
feasibility
This
work
provides
valuable
guidance
develop
chemistry
advanced
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 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 Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 18, 2024
Abstract
Succinonitrile
(SCN)
based
plastic
crystal
electrolytes
(SPCEs)
have
attracted
much
attention
for
lithium
metal
batteries
due
to
their
considerable
ionic
conductivity
and
thermal
stability.
Insufficient
mechanical
properties,
weak
reductive
stability,
the
presence
of
free
SCN
molecules
can
result
in
adverse
interfacial
reactions.
Polymer
introduction
has
been
explored
address
these
challenges.
However,
polymer
affects
state,
leading
reduced
conductivity,
potentially
limited
segmental
motion
at
room
temperature.
Herein,
a
cross‐linked
network
strategy
is
proposed
modify
Li‐ion
transport
pathway
SPCE,
aiming
significantly
improve
conductivity.
The
strong
interaction
between
matrix
enhances
mutual
solubility,
reduces
crystallinity
SCN,
forms
rapid
conduction
(polymer—[SCN—Li
+
]).
SPCE
increases
1.28
mS
cm
−1
,
with
migration
number
(
t
Li+
)
also
rising
0.7.
Electrochemical
performances
Li
symmetrical,
Li||LiFePO
4
Li||LiNi
0.8
Co
0.1
Mn
O
2
cells
show
significant
improvement
both
temperature
0
°C.
These
findings
suggest
that
designing
structures
SPCEs
holds
promise
solid‐state
battery
applications.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 4, 2024
High-voltage
sodium
metal
batteries
(SMBs)
present
a
viable
pathway
towards
high-energy-density
sodium-based
due
to
the
competitive
cost
advantage
and
abundant
supply
of
resources.
However,
they
still
suffer
from
severe
capacity
decay
induced
by
notorious
decomposition
electrolyte
under
high
voltage
unstable
cathode/electrolyte
interphase
(CEI).
In
addition,
reactivity
Na
flammable
electrolytes
push
SMBs
their
safety
limits.
Herein,
special
dual-anion
aggregated
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 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
.
