Replacing
liquid
electrolytes
with
solid
ionic
conductors
attracts
increasing
attention
due
to
the
potential
of
improved
battery
safety.
Solid-state
batteries
show
for
further
increased
energy/power
density
by
eliminating
use
packaging
accessories
unit
cells.
Sulfide-
and
halide-based
ceramic
exhibit
comparable
conductivity
electrolytes.
These
materials,
however,
are
inherently
brittle,
making
them
unfavorable
applications.
Here,
we
report
a
mechanically
enhanced
composite
Na+
conductor
that
contains
92.5
wt%
sodium
thioantimonate
(Na3SbS4,
NSS)
7.5
carboxymethylcellulose
(CMC);
latter
serves
as
binder
an
electrochemically
inert
encapsulation
layer.
The
constituents
were
integrated
at
particle
level,
providing
NSS-level
in
NSS-CMC
composite,
more
than
five-fold
decrease
electrolyte
thickness
obtained
provided
increase
conductance
compared
NSS
pellets.
Resulting
from
CMC
encapsulation,
this
shows
moisture
resistivity
electrochemical
stability,
which
significantly
promotes
cycling
performance
NSS-
based
solid-state
batteries,
improves
ductility
material.
This
work
demonstrates
well-controlled,
orthogonal
process
ceramic-rich,
processing
–
independent
streams
formation
along
solvent-assisted
environment.
provides
insights
into
interplay
among
solvent,
polymeric
binder,
particles
synthesis,
implies
critical
importance
identifying
appropriate
solvent/binder
system
precise
control
complicated
process.
Finally,
also
valuable
designing
tailorable
components
via
fundamental
understanding
effect
on
overall
ductility.
Industrial Chemistry and Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
We
comprehensively
reviewed
the
recent
achievements
in
cellulose-based
solid
electrolytes,
including
diverse
modifications
and
compositing
strategies
for
improving
ionic
conductivity,
current
challenges
future
prospects
are
discussed.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
Abstract
Solid‐state
sodium
batteries
are
deemed
as
a
highly
promising
candidate
for
medium
and
long‐term
stationary
energy
storage.
But,
the
solid‐state
electrolyte
with
desirable
ionic
conductivity
high
stability
against
solid
metal
electrodes
remains
significant
challenge
research
development
of
batteries.
In
this
research,
approach
in‐situ
formed
Na‐K
interlayer
is
put
forward,
wherein
K
+
electrochemically
migrates
from
K‐substituted
NASICON‐structure
ceramic
toward
interface
Na
electrode,
locally
dynamically
forming
metal.
Therefore,
compatibility
between
electrolytes
electrode
obviously
enhanced.
Accordingly,
area
specific
resistance
solid/solid
contact
gets
reduced
to
29.9
Ω
cm
2
room
temperature
critical
current
density
1.3
mA
−2
achieved.
meantime,
Na/Na
3
Zr
Si
PO
12
‐0.005K/Na
can
steadily
operate
1400
h
at
0.2
.
Moreover,
electrolyte‐based
paired
polyanion
layered
ion
cathodes
constructed
highlight
superiority
well‐designed
electrolyte/metal
interface.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(23), С. 30128 - 30136
Опубликована: Июнь 4, 2024
The
utilization
of
solid
polymer
electrolytes
(SPEs)
in
all-solid-state
sodium
metal
batteries
has
been
extensively
explored
due
to
their
excellent
flexibility,
processability
adaptability
match
roll-to-roll
manufacturing
processes,
and
good
interfacial
contact
with
a
high-capacity
Na
anode;
however,
SPEs
are
still
impeded
by
inadequate
mechanical
strength,
excessive
thickness,
poor
stability
anodes.
Herein,
robust,
thin,
cost-effective
polyethylene
(PE)
film
is
employed
as
skeleton
for
infiltrating
poly(ethylene
oxide)-sodium
bis(trifluoromethanesulfonyl)imide
(PEO/NaTFSI)
fabricate
PE-PEO/NaTFSI
SPE.
resulting
SPE
features
remarkable
thickness
25
μm,
lightweight
property
(2.1
mg
cm-2),
superior
strength
(tensile
=
100.3
MPa),
flexibility.
also
shows
an
ionic
conductivity
9.4
×
10-5
S
cm-1
at
60
°C
enhanced
anode.
Benefiting
from
these
advantages,
the
assembled
Na-Na
symmetric
cells
show
high
critical
current
density
(1
mA
cm-2)
long-term
cycling
(3000
h
0.3
cm-2).
Na||PE-PEO/NaTFSI||Na3V2(PO4)3
coin
exhibit
performance,
retaining
93%
initial
capacity
190
cycles
when
matched
6
cm-2
cathode
loading.
Meanwhile,
pouch
cell
can
work
stably
after
abuse
testing,
proving
its
flexibility
safety.
This
offers
promising
strategy
simultaneously
achieve
high-strength,
safe
solid-state
batteries.
ACS Nano,
Год журнала:
2024,
Номер
18(25), С. 16285 - 16296
Опубликована: Июнь 12, 2024
Sulfide-
and
halide-based
ceramic
ionic
conductors
exhibit
comparable
conductivity
with
liquid
electrolytes
are
candidates
for
high-energy-
high-power-density
all-solid-state
batteries.
These
materials,
however,
inherently
brittle,
making
them
unfavorable
applications.
Here,
we
report
a
mechanically
enhanced
composite
Na+
conductor
that
contains
92.5
wt
%
of
sodium
thioantimonate
(Na3SbS4,
NSS)
7.5
carboxymethyl
cellulose
(CMC);
the
latter
serves
as
binder
an
electrochemically
inert
encapsulation
layer.
The
constituents
were
integrated
at
particle
level,
providing
NSS-level
in
NSS–CMC
composite.
more
than
5-fold
decrease
electrolyte
thickness
obtained
provided
increase
conductance
compared
to
NSS
pellets.
As
result
CMC
encapsulation,
this
shows
increased
moisture
resistivity
electrochemical
stability,
which
significantly
promotes
cycling
performance
NSS-based
solid-state
This
work
demonstrates
well-controlled,
orthogonal
process
ceramic-rich,
processing:
independent
streams
formation
along
solvent-assisted
environment.
also
provides
insights
into
interplay
among
solvent,
polymeric
binder,
particles
synthesis
implies
critical
importance
identifying
appropriate
solvent/binder
system
precise
control
complicated
process.
Abstract
Recent
advancements
in
inorganic
solid
electrolytes
(ISEs),
achieving
sodium
(Na)‐ion
conductivities
exceeding
10
‐2
S
cm
‐1
at
room
temperature
(RT),
have
generated
significant
interest
the
development
of
solid‐state
batteries
(SSSBs).
However,
ISEs
face
challenges
such
as
their
limited
electrochemical
stability
windows
(ESWs)
and
compatibility
issues
with
high‐capacity,
high‐voltage
cathode
materials
Na
metal
anodes.
The
success
high‐performance
SSSBs
hinges
on
developing
ideal
that
deliver
high
+
ion
conductivities,
robust
chemical
stability,
well
constructed
electrode/ISE
interfaces.
This
review
explores
fundamental
principles
strategies
to
optimize
SSSB
performance
by
addressing
related
interfaces,
emphasizing
many
interfacial
are
intrinsically
linked
ISE
properties.
It
highlights
recent
research,
including
mechanisms
Na‐ion
conduction
key
factors
influencing
it,
crystal
structure,
lattice
dynamics,
point
defects,
grain
boundaries.
also
discusses
prototyping
for
cell
design
from
perspectives
material
defect
chemistry.
Additionally,
identifies
future
opportunities
advancing
provides
rational
solutions
guide
research
toward
practical
realization
SSSBs.
Keywords:
Solid‐state
batteries;
Inorganic
electrolytes;
Interfacial
mechanism;
Electrochemical
window;
Ionic
conductivity;
Modification
Journal of the American Ceramic Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 15, 2025
Abstract
Super
conductor
Na
3
SbS
4
has
received
substantial
attention
in
electrolyte
research
because
of
its
high
ionic
conductivity
and
low
grain
boundary
resistance.
A
breakthrough
electrochemical
stability
with
good
yet
to
be
captured.
Calcium
(Ca)
appears
as
an
ideal
substitute
for
sodium
(Na)
due
abundance
geological
resources,
nontoxic
properties,
equivalent
radius.
The
proposed
3‐2
x
Ca
glass–ceramic
electrolytes
were
subsequently
manufactured
using
ball
milling
heat
treatment.
results
acquired
the
maximum
1.59
mS
cm
−1
at
room
temperature,
which
reached
commercial
use
level
when
compared
current
popular
lithium‐ion
battery.
Moreover,
calcium
ions
partially
replaced
sites
while
creating
massive
vacancies
maintain
charge
neutrality,
resulting
fast
ion
transport.
Furthermore,
a
more
stable
bond
Ca–S
was
formed
interface,
inhibited
additional
reactions
electrolyte–metal
interface
demonstrated
exceptional
cyclic
stability,
making
it
viable
solid‐state
sodium‐ion
batteries.
Energy & Environmental Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
In
this
review,
the
formation
mechanism
of
sodium
dendrite
and
corresponding
battery
failure
causes
are
introduced
in
detail,
latest
advances
sodiophilic
design
strategies
systematically
discussed.