Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 2, 2025
Abstract
A
multifunctional
catalyst
with
enhanced
polysulfide
adsorption,
rapid
lithium
diffusion,
and
exceptional
catalytic
activity
is
crucial
for
accelerating
redox
kinetics
effectively
suppressing
the
shuttle
effect
in
lithium–sulfur
(Li–S)
batteries.
However,
developing
an
efficient
synthesis
method
such
catalysts
remains
challenging.
Here,
a
sustainable,
sulfur‐terminated
MXene
introduced
via
completely
dry
molten
salt
process,
which
avoids
need
harsh
acid
treatment,
byproduct
removal,
extensive
rinsing,
typical
syntheses.
Theoretical
calculations
electrochemical
data
confirm
that
this
serves
as
powerful
catalyst,
promoting
effective
superior
performance,
making
it
highly
suitable
advanced
separators
Li–S
As
result,
cells
incorporating
demonstrate
high
capacity
of
665
mAh
g
−1
after
500
cycles
at
1
C,
remarkably
low‐capacity
decay
rate
0.05%
per
cycle.
This
study
underscores
potential
precise
surface
termination
control
MXenes
to
drive
further
advancements
battery
technology.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(19), P. 24502 - 24513
Published: May 6, 2024
The
severe
shuttle
effect
of
polysulfides
(LiPSs)
and
the
slow
liquid–solid
phase
conversion
are
main
obstacles
hindering
practical
application
lithium–sulfur
(Li–S)
batteries.
Separator
modification
with
a
high-activity
catalyst
can
boost
LiPSs
suppress
their
effect.
In
this
work,
multi-heterostructured
MXene/NiS2/Co3S4
rich
S-vacancies
was
constructed
facilely
hydrothermal
high-temperature
annealing
strategy
for
separator
modification.
MXene
sheet
not
only
provides
physical
barrier
but
also
ensures
high
conductivity
adsorption
capacity
catalyst;
dual
active
centers
NiS2
Co3S4
catalyze
conversion.
addition,
vacancies
heterostructures
modulate
electronic
structure
catalyst,
improve
its
intrinsic
activity,
reduce
reaction
barrier,
thus
facilitating
ion/electron
transport
inhibiting
Benefiting
from
these
advantages,
Li–S
battery
modified
exhibits
exciting
discharge
capacities
(1495.4
mAh
g–1
at
0.1C
549.0
6C)
an
excellent
ultra-long
cycle
life
(average
decay
rate
0.026%
2000
cycles
2C);
sulfur
loading
10.0
mg
cm–2,
operates
nearly
80
0.2C,
giving
retention
75.76%.
This
work
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: Feb. 14, 2024
Quasi-solid
electrolytes
(QSEs)
based
on
nanoporous
materials
are
promising
candidates
to
construct
high-performance
Li-metal
batteries
(LMBs).
However,
simultaneously
boosting
the
ionic
conductivity
(σ)
and
lithium-ion
transference
number
(t
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 13, 2024
Abstract
Solid‐state
lithium
metal
batteries
(SSLMBs)
with
poly
(ethylene
oxide)
(PEO)‐based
electrolytes
have
increasingly
become
one
of
the
most
promising
battery
technologies
due
to
high
energy
density
and
safety.
However,
adverse
electrode/electrolyte
interface
compatibility
issues
hinder
further
application.
Herein,
a
PEO‐based
composite
solid
electrolyte
excellent
anode
cathode
interfacial
is
designed
via
coordination
modulation
strategy
induced
by
difluorobis(oxalato)phosphate
(DFBOP).
By
utilizing
this
electrolyte,
robust
inorganic‐rich
interphase
involving
LiF,
Li
x
PO
y
F
z
,
P─O
components
in
situ
generated
on
(Li)
LiNi
0.8
Co
0.1
Mn
O
2
(NCM811)
surfaces
forceful
among
PEO,
bis(trifluoromethanesulphonyl)imide,
DFBOP
subsequent
adjustment
front
orbital
levels.
It
contributes
homogeneous
deposition
an
effective
impediment
PEO
oxidation
decomposition
at
voltage,
promoting
superior
stability.
Consequently,
Li‐symmetric
cells
modified
can
achieve
stable
cycle
over
7000
h
0.2
mA
cm
−2
.
Specially,
unique
organic–inorganic
interpenetration
network
structure
enables
4.5
V
Li/NCM811
steadily
100
cycles,
discharge
capacity
215.4
mAh
g
−1
initial
coulombic
efficiency
91.23%.
This
research
has
shed
light
design
from
perspective
regulation
construct
high‐performance
SSLMBs.
Small,
Journal Year:
2024,
Volume and Issue:
20(47)
Published: Aug. 28, 2024
Lithium-sulfur
batteries
(LSBs)
have
the
advantages
of
high
theoretical
specific
capacity,
excellent
energy
density,
abundant
elemental
sulfur
reserves.
However,
LSBs
is
mainly
limited
by
shuttling
lithium
polysulfides
(LiPSs),
slow
reaction
kinetics
cathode.
For
solving
above
problems,
developing
high-performance
battery
separators,
reversible
Coulombic
efficiency
(CE)
and
cycle
life
can
be
effectively
enhanced.
Carbon-free
based
metal
compounds
are
expected
to
highly
efficient
separator
modifiers
for
a
new
generation
virtue
superior
chemical
adsorption
strong
catalytic
properties
lithophilicity
certain
extent.
They
give
play
synergistic
effect
their
"adsorption-catalysis"
sites
accelerate
redox
LiPSs,
good
Li
