Dalton Transactions,
Journal Year:
2024,
Volume and Issue:
53(10), P. 4753 - 4763
Published: Jan. 1, 2024
An
exquisite
CoS
2
-NC-CNTs@MoS
nanoarchitecture
is
designed
to
remedy
the
polysulfide
shuttle
effect
and
conversion
kinetics
as
a
separator
modifier
for
efficient
lithium–sulfur
batteries.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 16, 2025
Abstract
The
practical
application
of
rechargeable
Lithium−sulfur
(Li−S)
batteries
has
been
suffering
from
the
serious
“shuttle
effect”
soluble
lithium
polysulfides
(LiPSs)
and
slow
electrochemical
kinetics,
development
high‐efficiency
electrocatalysts
still
remains
a
challenge.
Herein,
quasi‐plane
heterostructures
composed
vertically
aligned
metallic
1T‐MoSe
2
nanosheets
evenly
distributed
on
topological
insulator
Bi
Se
3
substrates
(1T‐MoSe
/Bi
)
are
designed
through
two‐step
hot‐injection
solvothermal
method.
In
comparison
with
2H‐MoSe
,
incomplete
paired
orbitals
attached
lamellar
surface
contribute
to
establishment
stronger
interfacial
coupling
give
rise
valence
electron
modulation
between
Mo
4
d
6
p
orbits
in
heterostructures,
thus
conduce
weak
S‐S
bonding
energy
reduce
diffusion
barrier
LiPSs.
Theoretical
experimental
evaluations
further
elucidate
enhanced
chemical
affinity
superior
catalytic
performance
toward
Remarkably,
assembled
Li−S
modified
separator
exhibits
long‐term
cycling
stability
only
0.039%
capacity
decay
per
cycle
at
1
C
over
1000
cycles.
This
study
emphasizes
importance
interface
design
combined
phase
engineering
for
industrial
batteries.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 9, 2024
Abstract
Lithium‐sulfur
batteries
(LSBs)
are
known
as
high
energy
density,
but
their
performance
deteriorates
sharply
under
high/low‐temperature
surroundings,
due
to
the
sluggish
kinetics
of
sulfur
redox
conversion
and
Li
+
transport.
Herein,
a
catalytic
strategy
phase
reconstruction
with
abundant
“electron‐Li
”
reservoirs
has
been
proposed
simultaneously
regulate
electron
exchange.
As
demo,
1T‐phase
lithiation
molybdenum
disulfide
grown
on
hollow
carbon
nitride
(1T‐Li
x
MoS
2
/HC
3
N
4
)
is
achieved
via
in
situ
electrochemical
modulation,
where
1T‐Li
serves
an
auxiliary
“Li
source”
for
facilitating
transport
HC
acts
donor
electronic
supplier.
From
theoretical
calculations,
experimental
post‐modern
analyses,
relationship
between
behaviors
mechanism
accelerating
rate‐determining
species
deeply
understood.
Consequently,
cells
/PP
functional
separator
demonstrate
excellent
long‐term
stabilize
areal
capacity
6
mAh
cm
−2
5.0
mg
.
Even
exposed
robust
surroundings
from
(60
°C)
low
(0
temperatures,
optimized
exhibit
high‐capacity
retention
76.2%
90.4%
after
100
cycles,
respectively,
pointing
out
potential
application
catalysts
reconstruction‐assisted
LSBs.