Molecules,
Journal Year:
2025,
Volume and Issue:
30(8), P. 1833 - 1833
Published: April 19, 2025
The
advancement
of
lithium-sulfur
(Li-S)
batteries
has
been
hindered
by
the
shuttle
effect
lithium
polysulfides
(LiPSs)
and
sluggish
redox
kinetics.
engineering
functional
hybrid
separators
is
a
relatively
simple
effective
coping
strategy.
Layered
transition-metal
carbides,
nitrides,
carbonitrides,
class
emerging
two-dimensional
materials
termed
MXenes,
have
gained
popularity
as
catalytic
for
Li-S
due
to
their
metallic
conductivity,
tunable
surface
chemistry,
terminal
groups.
Nonetheless,
self-stacking
flaws
easy
oxidation
MXenes
pose
disadvantages,
developing
MXene-based
heterostructures
anticipated
circumvent
these
issues
yield
other
remarkable
physicochemical
characteristics.
Herein,
recent
advances
in
construction
heterostructured
improving
performance
are
reviewed.
diverse
conformational
forms
constitutive
relationships
with
LiPS
conversion
discussed,
general
principles
MXene
chemistry
alterations
heterostructure
designs
enhancing
electrochemical
summarized.
Lastly,
tangible
challenges
addressed,
advisable
insights
future
research
shared.
This
review
aims
highlight
immense
superiority
battery
separator
modification
inspire
researchers.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(41)
Published: July 15, 2024
Abstract
Lithium‐sulfur
batteries
(LiSBs)
with
high
energy
density
still
face
challenges
on
sluggish
conversion
kinetics,
severe
shuttle
effects
of
lithium
polysulfides
(LiPSs),
and
low
blocking
feature
ordinary
separators
to
LiPSs.
To
tackle
these,
a
novel
double‐layer
strategy
functionalize
is
proposed,
which
consists
Co
atomically
dispersed
CoN
4
decorated
Ketjen
black
(Co/CoN
@KB)
layer
an
ultrathin
2D
Ti
3
C
2
T
x
MXene
layer.
The
theoretical
calculations
experimental
results
jointly
demonstrate
metallic
sites
provide
efficient
adsorption
catalytic
capability
for
long‐chain
LiPSs,
while
active
facilitate
the
absorption
short‐chain
LiPSs
promote
Li
S.
stacking
serves
as
microscopic
barrier
further
physically
block
chemically
anchor
leaked
from
pores
gaps
Co/CoN
@KB
layer,
thus
preserving
within
anchoring‐conversion
reaction
interfaces
balance
accumulation
“dead
S”
Consequently,
ultralight
loading
@KB‐MXene,
LiSBs
exhibit
amazing
electrochemical
performance
even
under
sulfur
lean
electrolyte,
outperforming
lithium‐selenium
(LiSeBs)
can
also
be
achieved.
This
work
exploits
universal
effective
functionalized
separator
regulate
equilibrium
adsorption‐catalytic
interface,
enabling
high‐energy
long‐cycle
LiSBs/LiSeBs.
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
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(18), P. 10737 - 10744
Published: Jan. 1, 2024
Lithium–sulfur
(Li–S)
batteries
have
garnered
significant
attention
as
a
promising
alternative
to
conventional
lithium-ion
due
their
high
theoretical
energy
density.
