Lithium-sulfur
(Li-S)
batteries
have
emerged
as
one
of
the
most
attractive
alternatives
for
post-lithium-ion
battery
energy
storage
systems,
owing
to
their
ultrahigh
theoretical
density.
However,
large-scale
application
Li-S
remains
enormously
problematic
because
poor
cycling
life
and
safety
problems,
induced
by
low
conductivity
,
severe
shuttling
effect,
reaction
kinetics,
lithium
dendrite
formation.
In
recent
studies,
catalytic
techniques
are
reported
promote
commercial
batteries.
Compared
with
conventional
sites
on
host
materials,
quantum
dots
(QDs)
ultrafine
particle
size
(<10
nm)
can
provide
large
accessible
surface
area
strong
polarity
restrict
excellent
effect
enhance
kinetics
redox
reactions,
well
abundant
lithiophilic
nucleation
regulate
Li
deposition.
this
review,
intrinsic
hurdles
S
conversion
stripping/plating
reactions
first
summarized.
More
importantly,
a
comprehensive
overview
is
provided
inorganic
QDs,
in
improving
efficiency
stability
batteries,
strategies
including
composition
optimization,
defect
morphological
engineering,
design
heterostructures,
so
forth.
Finally,
prospects
challenges
QDs
discussed.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Янв. 4, 2024
Abstract
The
utilization
of
solid-state
electrolytes
(SSEs)
presents
a
promising
solution
to
the
issues
safety
concern
and
shuttle
effect
in
Li–S
batteries,
which
has
garnered
significant
interest
recently.
However,
high
interfacial
impedances
existing
between
SSEs
electrodes
(both
lithium
anodes
sulfur
cathodes)
hinder
charge
transfer
intensify
uneven
deposition
lithium,
ultimately
result
insufficient
capacity
poor
cycling
stability.
Hence,
reduction
resistance
is
paramount
importance
pursuit
efficacious
batteries.
In
this
review,
we
focus
on
experimental
strategies
employed
enhance
contact
electrodes,
summarize
recent
progresses
their
applications
Moreover,
challenges
perspectives
rational
design
practical
batteries
are
outlined
as
well.
We
expect
that
review
will
provide
new
insights
into
further
technique
development
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(10)
Опубликована: Янв. 16, 2024
The
cycle
life
of
high-energy-density
lithium-sulfur
(Li-S)
batteries
is
severely
plagued
by
the
incessant
parasitic
reactions
between
Li
metal
anodes
and
reactive
polysulfides
(LiPSs).
Encapsulating
Li-polysulfide
electrolyte
(EPSE)
emerges
as
an
effective
design
to
mitigate
kinetically.
Nevertheless,
rate
performance
Li-S
with
EPSE
synchronously
suppressed.
Herein,
sacrifice
in
circumvented
while
mitigating
employing
hexyl
methyl
ether
(HME)
a
co-solvent.
specific
capacity
HME-based
nearly
not
decreased
at
0.1
C
compared
conventional
electrolytes.
With
ultrathin
anode
(50
μm)
high-areal-loading
sulfur
cathode
(4.4
mg
Abstract
Graphitic
carbon
nitride
(g‐C
3
N
4
)
is
a
highly
recognized
two‐dimensional
semiconductor
material
known
for
its
exceptional
chemical
and
physical
stability,
environmental
friendliness,
pollution‐free
advantages.
These
remarkable
properties
have
sparked
extensive
research
in
the
field
of
energy
storage.
This
review
paper
presents
latest
advances
utilization
g‐C
various
storage
technologies,
including
lithium‐ion
batteries,
lithium‐sulfur
sodium‐ion
potassium‐ion
supercapacitors.
One
key
strengths
lies
simple
preparation
process
along
with
ease
optimizing
structure.
It
possesses
abundant
amino
Lewis
basic
groups,
as
well
high
density
nitrogen,
enabling
efficient
charge
transfer
electrolyte
solution
penetration.
Moreover,
graphite‐like
layered
structure
presence
large
π
bonds
contribute
to
versatility
preparing
multifunctional
materials
different
dimensions,
element
group
doping,
conjugated
systems.
characteristics
open
up
possibilities
expanding
application
devices.
article
comprehensively
reviews
progress
on
highlights
potential
future
applications
this
field.
By
exploring
advantages
unique
features
,
provides
valuable
insights
into
harnessing
full
applications.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(42)
Опубликована: Сен. 17, 2023
Abstract
Lithium–sulfur
(Li–S)
batteries
are
widely
regarded
as
promising
next‐generation
battery
systems
due
to
their
impressive
theoretical
energy
density
of
2600
Wh
kg
−1
.
However,
practical
high‐energy‐density
Li–S
pouch
cells
suffer
from
rapid
performance
degradation
under
high
working
rates.
Herein,
the
mechanism
400
is
systematically
investigated
a
cycling
rate
0.2
C.
Focusing
on
reduced
specific
capacity
and
increased
cell
polarization,
sluggish
cathodic
sulfur
redox
kinetics
lean‐electrolyte
high‐rate
conditions
identified
main
limitation.
Further
polarization
decoupling
indicates
activation
contributes
dominantly
polarization.
Accordingly,
delicately
designed
electrolyte
using
dimethyl
diselenide
kinetic
promoter
proposed
enable
work
at
C
with
This
clarifies
interfacial
charge
transfer
challenge
for
rates
expected
inspire
rational
strategy
design
achieving
advanced
batteries.
