Energy & environment materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 20, 2025
Gel
polymer
electrolytes
(GPEs)
present
the
best
compromise
between
mechanical
and
electrochemical
properties,
as
well
an
improvement
of
cell
safety
in
framework
Li
metal
batteries
production.
However,
polymerization
mechanism
typically
employed
relies
on
presence
initiator,
is
hindered
by
oxygen,
thus
impeding
industrial
scale‐up
GPEs
In
this
work,
UV‐mediated
thiol‐ene
polymerization,
employing
polyethylene
glycol
diacrylate
(PEGDA)
oligomer,
was
carried
out
a
liquid
electrolyte
solution
(1
M
LiTFSI
EC/DEC)
to
obtain
self‐standing
GPE.
A
comparative
study
two
different
thiol‐containing
crosslinkers
(trimethylolpropane
tris(3‐mercaptopropionate)
‐
T3
pentaerythritol
tetrakis(3‐mercaptopropionate)
T4)
out,
studying
effects
crosslinking
environment
GPE
production
methods
performances.
All
produced
excellent
room
temperature
ionic
conductivity
above
1
mS
cm
−1
,
wide
stability
window
up
4.59
V.
When
cycled
at
current
density
C/10
for
more
than
250
cycles,
all
tested
cells
showed
stable
cycling
profile
specific
capacity
>100
mAh
g
indicating
suitability
such
processes
up‐scaling.
Graphite,
with
a
modest
specific
capacity
of
372
mAh
g-1,
is
stable
material
for
lithium-ion
battery
anodes.
However,
its
inadequate
to
meet
the
growing
power
demands
because...
ABSTRACT
Tin
sulfide
(SnS
2
)
is
a
promising
anode
material
for
sodium/potassium‐ion
batteries
(SIBs/PIBs)
due
to
its
large
interlayer
spacing
and
high
theoretical
capacity.
However,
application
hindered
by
sluggish
kinetics,
volume
expansion,
low
conductivity.
In
this
work,
synergistic
engineering
route
proposed
that
combining
environmentally
friendly
chlorella
with
sulfurized
polyacrylonitrile
(SPAN)
achieve
green
doping
dual‐mode
confinement
SnS
‐based
anode.
The
SPAN
matrix
prevents
agglomeration,
enhances
charge
transfer,
improves
structural
stability,
while
phosphorus
(P)
accelerates
“solid‒solid”
conversion
kinetics.
‒P‒SPAN
demonstrates
outstanding
sodium/potassium
storage
performance
across
wide
temperature
range
(‒40°C
70°C),
delivering
reversible
capacities,
excellent
rate
capability,
exceptional
long‐term
cycling
stability.
reliability
of
the
as‐developed
strategy
in
‒P‒SPAN//NaNi
0.4
Fe
0.2
Mn
O
full
cell
also
verified,
which
shows
strong
practical
potential
capacity
long
durability
(241
mAh
g
−1
/800
cycles/0.5
A
/25°C;
159
/400
/60°C;
105
/‒15°C).
associated
electrochemical
mechanisms
are
elucidated
through
comprehensive
tests,
in/ex
situ
analyses.
calculation
unveil
P‐doping
helps
enhance
adsorption
Na
+
discharge
products.
This
work
may
pave
way
developing
yet
imperfect
electrode
materials
field
energy
storage.
ACS Sustainable Chemistry & Engineering,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 5, 2025
The
irregular
dendrite
growth
and
unfavorable
adverse
reactions
on
the
Zn
anode
has
emerged
as
a
non-negligible
obstacle
for
broad
deployment
of
aqueous
zinc-ion
batteries
(AZIBs).
Herein,
thin
robust
separator
(LFP1:1)
composed
lyocell
fibrillated
fibers
polyethylene
terephthalate
(PET)
that
features
light
weight,
cost
effectiveness,
being
mass-producible
is
developed
by
paper-making
method
to
inhibit
undesirable
achieve
an
exceptional
stable
anode.
LFP1:1
offers
abundant
polar
functional
groups,
small
uniform
pore
structure,
high
mechanical
strength,
which
beneficial
constructing
specific
migration
channels
Zn2+
suppressing
reactions,
promoting
deposition,
resisting
penetration.
As
verified
experimental
results,
Zn//Zn
symmetric
cell
furnished
with
displays
prolonged
lifespan
up
1452
h
in
3
M
Zn(CF3SO3)2
electrolyte
at
1
mA·cm–2
without
or
byproducts,
superior
than
GF
separator.
Moreover,
assembled
Zn//V2O5
full
also
demonstrates
outstanding
cycling
stability
77.8%
capacity
retention
A·g–1
after
1000
cycles.
This
work
sheds
promising
large-scale
producible
development
advanced
materials
performance
AZIBs.
Alluaudite-type
iron-based
sulfate
structure
(Na2+2xFe2-x(SO4)3)
has
attracted
wide
attention
due
to
its
high
working
voltage
and
low
cost.
However,
their
practical
application
is
hindered
by
challenges
such
as
limited
reversible
capacity
sluggish
transfer
kinetics.
Herein,
we
proposed
an
anion
substitution
strategy
optimize
cathode
materials.
The
electrochemical
characterization
theoretical
calculations
confirmed
a
reduction
in
the
migration
barrier
of
Na+
ions
various
pathways.
Besides,
fluorine
weakened
electron
density
crystal
plane,
thereby
impeding
continuous
side
reaction
electrolyte.
As
expected,
NFSF
can
exhibit
121.5
mAh
g-1
at
12
mA
keep
retention
78.8%
after
1000
cycles
600
g-1.
In
addition,
NFSF-based
hard
carbon
(HC)-based
anode
were
assembled
into
laboratory-scale
pouch
cell
demonstrate
performance
applications.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 17, 2025
Abstract
Fluoride
ion
batteries
(FIBs)
have
garnered
significant
attention
due
to
their
ultrahigh
theoretical
energy
density,
dendrite‐free
safety,
and
resource
abundance.
Although
some
anion
acceptors
been
proposed
address
the
insolubility
of
inorganic
fluoride
salts,
difficulty
in
dissociating
ions
from
results
short
lifespan
extremely
low
specific
capacity
FIBs.
Here,
a
battery
is
demonstrated
with
unprecedented
long
life
through
design
an
acceptor‐multi‐F
state
electrolyte.
The
high
Lewis
acidity
triphenylantimony
chloride
(TSbCl)
as
novel
acceptor
electrolyte
facilitates
complete
dissociation
CsF,
resulting
TSbCl‐F
complex
can
further
interact
form
states.
This
strategy
combines
capability
for
salts
minimal
thermodynamic
barriers
releasing
at
electrode‐electrolyte
interface.
endows
FIBs
durable
reversible
fluorination/defluorination
reaction
(3700
cycles
coulombic
efficiency
99.5%
small
voltage
polarization
30
mV)
(580
mAh
g
−1
after
40
100
mA
).
high‐output
CuF
2
//Li
configuration
(with
discharge
plateau
2.9
V)
larger‐sized
pouch‐type
//Sn+SnF
530
)
are
demonstrated.
