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.
Inorganic Chemistry Frontiers,
Journal Year:
2024,
Volume and Issue:
11(14), P. 4277 - 4287
Published: Jan. 1, 2024
Ultrathin
BiOX/rGO
(X
=
F,
Cl,
Br,
and
I)
nanosheets
serve
as
novel
sulfur
hosts
in
Li–S
batteries.
The
influence
of
X
on
the
electrochemical
performance
redox
mechanism
is
elucidated
through
situ
Raman/XRD
characterization
DFT
analysis.
International Journal of Energy Research,
Journal Year:
2025,
Volume and Issue:
2025(1)
Published: Jan. 1, 2025
Herein,
amorphous
vanadium
oxide
(a‐VO
x
)
nanoparticle‐impregnated
three‐dimensional
(3D)
microspheres
comprising
highly
conductive
and
porous
reduced
graphene
(rGO)
nitrogen‐doped
carbon
nanotubes
(N‐CNTs)
framework
@rGO‐N‐CNTs)
were
designed
as
functional
interlayers
for
lithium–sulfur
batteries
(LSBs).
N‐CNTs
successfully
formed
on
the
rGO
sheet
surfaces,
uniformly
distributed
between
mesopores,
via
catalytic
effect
of
metallic
Co–Fe.
The
not
only
provided
an
additional
pathway
electron
transport
but
also
improved
structural
durability
electrode
materials.
Moreover,
polar
a‐VO
nanoparticles
involved
within
conduction
offered
numerous
chemisorption
sites
anchoring
polysulfides,
thereby
improving
utilization
active
cell
employing
@rGO‐N‐CNTs‐coated
separator
a
interlayer
exhibited
excellent
rate
capabilities
(473
mA
h
g
−1
at
1.5
C)
cycling
performance
(800
cycles
1.0
C
average
decay
0.09%
per
cycle)
high
C‐rate.
This
outstanding
was
mainly
ascribed
to
synergistic
effects
rGO,
framework,
nanoparticles.
design
strategy
proposed
in
this
study
offers
insights
into
development
nanostructures
extensive
energy
storage
applications
including
LSBs.
Despite
the
advantageous
features
of
high
theoretical
specific
capacity
(1675
mA
h
g-1)
and
low
production
costs,
lithium-sulfur
batteries
have
faced
obstacles
in
achieving
commercial
fabrication,
primarily
due
to
sluggish
reaction
kinetics
challenging
shuttle
effect.
To
address
these
issues,
a
novel
high-entropy
heterojunction
interlayer,
HEO@CC,
was
developed,
which
controllably
grew
homogeneous
FeCoNiOx-MnCrOx
(HEO)
particles
onto
carbon
cloth.
Consequently,
HEO@CC
generates
multimetal
active
sites
structure
with
intrinsic
resistance,
enhancing
polysulfide
anchoring
capacity,
accelerating
redox
Li2S,
physically
impeding
shuttling.
As
analyzed
by
differential
radial
transmission
(DRT)
techniques,
facilitates
rapid
ability
conversion
capability
soluble
polysulfides.
This
integration
leads
reduction
charge
transfer
impedance,
improves
sulfur
utilization,
enhances
Li+
diffusion.
During
rate
tests,
battery
exhibited
substantial
retention
622.79
g-1
even
after
500
cycles,
demonstrating
an
average
weekly
decay
only
0.029%.
research
introduces
innovative
perspectives
on
design
heterostructured
bidirectional
catalytic
interlayers
their
mechanism,
promoting
progress
high-capacity
energy
storage
technologies.
Energy Materials,
Journal Year:
2025,
Volume and Issue:
5(8)
Published: April 22, 2025
The
development
of
functional
interlayers
to
effectively
anchor
lithium
polysulfide
and
enhance
the
integrity
sulfur
cathodes
in
lithium-sulfur
(Li-S)
batteries
has
received
significant
global
consideration.
However,
identifying
an
interlayer
that
is
both
highly
conductive
structurally
robust
remains
a
major
challenge.
This
study
presents
synthesis
three-dimensional
nitrogen-doped
carbon
microspheres
embedded
with
bismuth
selenide
nanocrystals
(referred
as
“three-dimensional
(3D)
Bi2Se3@N-C”
microspheres)
evaluates
their
role
barrier
for
enhanced
Li-S
battery
performance.
Bi2Se3
within
provide
numerous
active
spots
chemical
captivity
electrocatalytic
transformation
species.
Moreover,
N-doped
framework
facilitates
speedy
transfer
charge
moieties,
resulting
faster
redox
activity.
Correspondingly,
cells
paired
3D
Bi2Se3@N-C
microsphere
modified
separators
exhibit
excellent
rate
capability
(297
mA
h
g-1
at
2.0
C-rate)
prolonged
stable
cycling
performance
different
C-rates
(863
after
100
cycles
0.1
C,
440
200
0.5
219
500
C).
cell
demonstrates
satisfactory
retaining
57%
its
capacity
when
material
loading
was
raised
3.5
mg
cm-2,
confirming
practical
feasibility
prepared
nanostructure.
detailed
physical
electrochemical
results
presented
this
offer
valuable
perceptions
expansion
superior,
conductive,
easily
scalable
nanostructures
various
energy
storage
demands.
