Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 31, 2025
Abstract
Enhancing
Li
2
S
deposition
and
oxidation
kinetics
in
lithium‐sulfur
batteries,
especially
the
potential‐limiting
step
under
lean
electrolyte,
can
be
effectively
achieved
by
developing
conductive
catalysts.
In
this
study,
using
ZnMoO
4
as
precursors,
Zn‐doped
molybdenum
carbide
microflowers
(Zn‐Mo
C)
composed
of
speared
porous
sheets
are
fabricated
with
a
hierarchically
ordered
structure.
Density
functional
theory
calculations
indicate
that
Zn
doping
shifts
d‐band
center
on
Mo
atoms
C
upward,
promotes
elevation
certain
antibonding
orbitals
Mo─S
bonds
above
Fermi
level,
enhances
d‐p
interaction
between
lithium
polysulfides
(LiPSs)
catalysts,
weakens
both
S─S
Li─S
LiPSs.
Incorporating
significantly
reduces
Gibbs
free
energy
barrier
for
rate‐limiting
→
conversion,
from
0.52
eV
to
just
0.05
C.
Thus,
synthesized
Zn‐Mo
demonstrates
impressive
bifunctional
electrocatalytic
performance,
advancing
sulfur
reduction
decomposition.
Moreover,
modification
charge
transfer
within
C/LiPSs
system,
synergistically
accelerating
oxidation.
The
C/S
cathode
electrochemical
achieves
remarkable
cycling
stability
minimal
capacity
decay
0.021%
per
cycle
over
1000
cycles
at
5
C,
underscoring
its
potential
high‐energy
applications.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(45)
Published: June 3, 2024
Abstract
Aqueous
zinc–sulfur
battery
(AZSB)
is
a
promising
technology
for
energy
storage,
but
its
practical
application
severely
limited
by
the
sluggish
redox
kinetics
and
large
volume
expansion
of
sulfur
cathode.
Herein,
controllable
synthesis
sub‐10
nm
ZnS
nanograins
confined
in
micro‐size
carbon
skeleton
(MN‐ZnS/C─H)
as
cathode
AZSB
reported.
It
revealed
that
source,
polyvinylpyrrolidone
(PVP),
can
weakly
coordinate
with
Zn
2+
provide
physical
confinement
inhibiting
agglomeration
during
calcination
process.
Moreover,
particle
size
(from
to
350
nm)
shape
ZnS/carbon
composite
bulk
sphere)
be
well
controlled
tuning
chain
length
PVP.
In
unique
hierarchical
structure,
an
optimized
ion
transmission
path,
network
not
only
ensures
high
electronic
conductivity
also
maintains
structure
integrity
upon
variation,
endowing
MN‐ZnS/C─H
electrode
reversible
capacity
370
mA
h
g
−1
at
0.2
A
,
rate
capability
209
4
long
lifespan
210
cycles
93.2%
retention
2
.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2024,
Volume and Issue:
12(37), P. 14018 - 14027
Published: Sept. 2, 2024
The
shuttle
effect
and
sluggish
conversion
kinetics
of
lithium
polysulfides
are
the
main
bottlenecks
for
widespread
application
lithium–sulfur
(Li-S)
battery.
Herein,
by
incorporating
merits
high
electronic
conductivity
highly
dispersed
micrometer-scale
cobalt
phosphide
(CoP)
with
excellent
catalytic
activity,
molybdenum
disulfide
(MoS2),
uniformly
MoS2
nanosheets
on
surface
cube
CoP
can
be
developed,
which
endows
CoP@MoS2
smooth
ion/electron
transfer
paths,
effective
catalysis,
maximum
active
sites.
After
applying
as
a
separator
modifier
in
Li-S
battery,
battery
deliver
initial
discharge
capacity
(1321
mAh
g–1
at
0.1
C),
rate
capability
(837
2
stable
cycling
performance
(0.101%
decay
after
250
cycles
0.5
suggesting
great
prospects
micro–nanostructure
catalyst
batteries.
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(25), P. 9775 - 9783
Published: Jan. 1, 2024
This
work
studies
the
effects
of
anionic
species
on
adsorption
and
catalytic
abilities
sulfur
cathodes.
The
results
show
that
P-doped
metal
compounds
are
more
beneficial
for
inhibiting
shuttle
effect
improving
reaction
kinetics.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 10, 2024
Abstract
The
intrinsically
sluggish
sulfur
reduction
reaction
kinetics
and
serious
shuttle
effect
of
soluble
lithium
polysulfides
(LiPSs)
severely
impede
the
practical
commercialization
lithium‐sulfur
(Li‐S)
batteries.
Herein,
self‐supported
tungsten
nitride
carbide
heterostructures
with
vanadium
doping
that
are
directly
grown
on
carbon
cloth
substrate
(CC@V‐W
2
N/WC
1‐
x
)
creatively
designed
for
Li‐S
batteries,
which
can
tandemly
catalyze
liquid–liquid
conversion
liquid–solid
polysulfide
intermediate
free
any
interference
from
polymer
binders
conductive
additives.
Noteworthy,
rich
heterointerfaces
beneficial
rapid
charge
transfer,
strong
chemical
adsorption
toward
LiPSs,
massive
exposed
catalytically
active
sites,
remarkable
catalytic
activities.
Consequently,
batteries
assembled
CC@V‐W
/S
cathodes
exhibit
high
utilization,
superior
rate
capability,
decent
long‐term
cycling
stability.
Furthermore,
experimental
analyses
theoretical
calculations
jointly
substantiate
V‐W
N
component
is
more
effective
in
catalyzing
long‐chain
while
V‐WC
benefits
favorable
Li
S
deposition
kinetics.
More
importantly,
pouch
cells
also
fabricated
to
demonstrate
their
feasibility
applications.
This
work
not
only
highlights
significance
tandem
catalysis
consecutive
LiPSs
but
provides
a
feasible
avenue
developing
highly
efficient
electrocatalysts
high‐performance
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 15, 2024
Lithium-sulfur
(Li-S)
batteries,
acclaimed
for
their
high
energy
density,
cost-effectiveness,
and
environmental
benefits,
are
widely
considered
as
a
leading
candidate
the
next-generation
storage
systems.
However,
commercialization
is
impeded
by
critical
challenges,
such
shuttle
effect
of
lithium
polysulfides
sluggish
reaction
kinetics.
These
issues
can
be
effectively
mitigated
through
design
heterojunction
catalysts.
Despite
remarkable
advancements
in
this
field,
comprehensive
elucidation
underlying
mechanisms
structure-performance
relationships
catalysts
sulfur
electrocatalysis
systems
remains
conspicuously
absent.
Here,
it
expounded
upon
heterostructure
engineering
Li-S
batteries
latest
guided
these
multifarious
examined.
Furthermore,
illuminates
groundbreaking
paradigms
design,
encompassing
realms
composition,
structure,
function,
application.
Finally,
research
trends
future
development
directions
novel
materials
extensively
deliberated.
This
study
not
only
provides
profound
understanding
but
also
facilitates
exploration
new
electrocatalyst
