Small,
Journal Year:
2023,
Volume and Issue:
20(12)
Published: Nov. 8, 2023
Abstract
The
shuttle
effect,
which
causes
the
loss
of
active
sulfur,
passivation
lithium
anode,
and
leads
to
severe
capacity
attenuation,
is
currently
main
bottleneck
for
lithium‐sulfur
batteries.
Recent
studies
have
disclosed
that
molybdenum
compounds
possess
exceptional
advantages
as
a
polar
substrate
immobilize
catalyze
polysulfide
such
high
conductivity
strong
sulfiphilicity.
However,
these
materials
show
incomplete
contact
with
sulfur/polysulfides,
uneven
redox
conversion
sulfur
results
in
poor
rate
performance.
Herein,
new
type
2D
nano‐channeled
(2D‐MoN
x
)
via
organic‐polyoxometalate
superstructure
accelerating
interfacial
catalysis
toward
high‐performance
batteries
reported.
2D‐MoN
shows
well‐interlinked
nano‐channels,
increase
reactive
interface
surface
polysulfides.
Therefore,
battery
equipped
displays
discharge
912.7
mAh
g
−1
at
1
C
highest
retention
523.7
after
300
cycles.
Even
2
C,
can
be
maintained
526.6
This
innovative
nano‐channel
design
provides
nanostructures
optimize
chemistry
eliminate
effect
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(38)
Published: April 26, 2024
Abstract
The
applications
of
lithium
(Li)–sulfur
(S)
batteries
are
simultaneously
hampered
by
the
unlimited
dendritic
Li
growth
and
sluggish
redox
kinetics
polysulfides
(LiPSs).
In
this
work,
an
electronic
state‐modulated
Ni
4
N/Zn
3
N
2
heterogeneous
nanosheet
arrays
is
painstakingly
fabricated
on
surface
carbon
cloth
(CC@Ni
)
as
efficient
bi‐service
host
to
promote
uniform
deposition
boost
LiPSs
catalysis.
It
found
that
structure
heterostructure
modulated
realize
a
rational
transition
metal
d‐band
center,
its
built‐in
electric
field
(BIEF)
within
heterointerfaces
facilitates
interfacial
charge
transfer,
resulting
in
low
deposition/migration
energy
barrier
adsorption/catalytic
conversion
kinetics.
As
result,
as‐prepared
CC@Ni
‐Li
anode
can
enable
Li||Li
symmetrical
cells
possess
long‐term
lifespan
over
500
h
even
at
10
mA
cm
−2
/20
mAh
,
as‐assembled
LiNi
0.8
Co
0.1
Mn
O
||CC@Ni
full
cell
also
shows
excellent
cycling
performance
(95.8%
capacity
retention
after
100
cycles).
When
used
for
both
S
loading,
‐S||CC@Ni
exhibits
outstanding
stability
(744
g
−1
1000
cycles
2C).
This
work
highlights
great
potential
heterostructures
fabricating
ideal
bi‐serve
hosts
electrodes.
Small,
Journal Year:
2024,
Volume and Issue:
20(31)
Published: March 8, 2024
Abstract
The
commercialization
of
lithium–sulfur
(Li–S)
battery
is
seriously
hindered
by
the
shuttle
behavior
lithium
(Li)
polysulfide,
slow
conversion
kinetics,
and
Li
dendrite
growth.
Herein,
a
novel
hierarchical
p‐type
iron
nitride
n‐type
vanadium
(p‐Fe
2
N/n‐VN)
heterostructure
with
optimal
electronic
structure,
confined
in
vesicle‐like
N‐doped
nanofibers
N/n‐VN⊂PNCF),
meticulously
constructed
to
work
as
“one
stone
two
birds”
dual‐functional
hosts
for
both
sulfur
cathode
anode.
As
demonstrated,
d‐band
center
high‐spin
Fe
atom
captures
more
electrons
from
V
realize
π*
moderate
σ*
bond
electron
filling
orbital
occupation;
thus,
allowing
adsorption
intensity
polysulfides
effective
d–p
hybridization
improve
reaction
kinetics.
Meanwhile,
this
unique
structure
can
dynamically
balance
deposition
transport
on
anode;
thereby,
effectively
inhibiting
growth
promoting
formation
uniform
solid
electrolyte
interface.
as‐assembled
Li–S
full
batteries
exhibit
conspicuous
capacities
ultralong
cycling
lifespan
over
2000
cycles
at
5.0
C.
Even
higher
S
loading
(20
mg
cm
−2
)
lean
(2.5
µL
−1
),
cells
still
achieve
an
ultrahigh
areal
capacity
16.1
mAh
after
500
0.1
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(48)
Published: Aug. 28, 2024
Abstract
Monocomponent
catalysts
exhibit
the
limited
catalytic
conversion
of
polysulfides
due
to
their
intrinsic
electronic
structure,
but
activity
can
be
improved
by
introducing
heteroatoms
regulate
its
structure.
However,
rational
selection
principles
doping
elements
remain
unclear.
Here,
we
are
guided
theoretical
calculations
select
suitable
based
on
balanced
relationship
between
adsorption
strength
lithium
(LiPSs)
and
sulfide.
We
apply
screening
method
develop
a
new
catalyst
phosphorus
doped
RuSe
2
,
manifesting
further
enhanced
conductivity
compared
with
original
facilitating
charge
transfer
modulating
d‐band
center
thereby
augmenting
effectiveness
in
interacting
LiPSs.
Consequently,
assembled
cell
exhibits
an
areal
capacity
7.7
mAh
cm
−2
even
under
high
sulfur
loading
8.0
mg
lean
electrolyte
condition
(5.0
μL
−1
).
This
strategy
offers
robust
solution
for
design
advanced
field
lithium‐sulfur
batteries
potentially
other
domains
as
well.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 14, 2025
Abstract
High
redox
kinetic
barriers
and
the
severe
shuttle
effect
of
lithium
polysulfides
(LiPSs)
are
two
primary
challenges
for
practical
deployment
lithium‐sulfur
(Li–S)
batteries.
Herein,
highly
dispersed
Co
nanoparticles
embedded
into
S,
N
co‐doped
hollow
chained
carbon
sphere
(Co@SNC)
well‐designed
prepared
served
as
an
effective
host
catalyst
Li–S
Doped
S‐atoms
can
effectively
modulate
electronic
metal‐support
interaction
between
matrix,
which
induces
charge
redistribution
increased
d‐orbital
energy
levels.
Co@SNC
provide
strong
chemical
with
LiPSs
reduce
Li
+
diffusion
barrier,
anchor
accelerate
conversion
kinetics.
The
chain‐like
structure
also
synergistically
suppresses
shuttling
enables
high
sulfur
loadings
rapid
charge/mass
transfer.
These
merit
batteries
based
on
reversible
capacity,
impressive
rate
performance,
prolong
cycling
stability
a
low
capacity
decay
0.024%
per
cycle
over
1700
cycles.
Notably,
Co@SNC/S
electrode
still
delivers
initial
814.9
mAh
g
−1
superior
performance
even
at
loading
poor
electrolytes.
Small,
Journal Year:
2023,
Volume and Issue:
20(17)
Published: Dec. 4, 2023
Abstract
Lithium–sulfur
batteries
(LSBs)
with
ultra‐high
energy
density
(2600
W
h
kg
−1
)
and
readily
available
raw
materials
are
emerging
as
a
potential
alternative
device
low
cost
for
lithium‐ion
batteries.
However,
the
insulation
of
sulfur
unavoidable
shuttle
effect
leads
to
slow
reaction
kinetics
LSBs,
which
in
turn
cause
various
roadblocks
including
poor
rate
capability,
inferior
cycling
stability,
coulombic
efficiency.
The
most
effective
way
solve
issues
mentioned
above
is
rationally
design
control
synthesis
cathode
host
LSBs.
Transition
metal
phosphides
(TMPs)
good
electrical
conductivity
dual
adsorption‐conversion
capabilities
polysulfide
(PS)
regarded
promising
hosts
new‐generation
In
this
review,
main
obstacles
commercializing
LSBs
development
processes
their
first
elaborated.
Then,
fixation
principles,
methods
TMPs
briefly
summarized
recent
progress
reviewed
detail.
Finally,
perspective
on
future
research
directions
provided.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(6), P. 3107 - 3117
Published: Jan. 29, 2024
Balancing
the
adsorption
of
lithium-polysulfide
intermediates
on
polar
host
material
surfaces
and
effect
their
electronic
conductivity
in
subsequent
oxidation
reduction
kinetics
electrochemical
reactions
is
necessary
remains
a
challenge.
Herein,
we
have
evaluated
role
polarity
preparing
series
ascharite/reduced
graphene
oxide
(RGO)
aerogels
by
dispersing
strong
ascharite
nanowires
varying
mass
into
conductive
RGO
matrix.
When
severed
as
Li–S
battery
cathodes,
optimized
S@ascharite/RGO
cathode
with
sulfur
content
73.8
wt
%
demonstrates
excellent
rate
performance
cycle
stability
accompanied
high-capacity
retention
for
500
cycles
at
1.0
C.
Interesting
advantages
including
enhanced
ability
formation
Mg–S
Li
bonds,
continuous
quick
electron/ion
transportations
assembled
framework,
effective
deposition
Li2S
are
combined
ascharite/RGO
aerogel
hosts.
The
results
further
demonstrate
that
components
S
plays
dominant
improvement
performance,
but
absence
substrate
leads
to
serious
capacity
attenuation,
especially
performance.
balanced
design
protocol
provides
universal
method
synthesis
multiple
hosts
high-performance
LSBs.
