Discover Chemical Engineering,
Год журнала:
2024,
Номер
4(1)
Опубликована: Май 21, 2024
Abstract
Lithium-sulfur
batteries
(LSBs)
have
garnered
significant
attention
as
a
promising
next-generation
rechargeable
battery,
offering
superior
energy
density
and
cost-effectiveness.
However,
the
commercialization
of
LSBs
faces
several
challenges,
including
ionic/electronic
insulating
nature
active
materials,
lithium
polysulfide
(LiPS)
shuttle
effect,
volume
expansion/contraction
cathode,
issues
with
Li
metal
anode.
Despite
numerous
efforts
to
address
these
previous
studies
predominantly
been
conducted
under
mild
conditions
such
high
electrolyte-to-sulfur
(E/S)
ratio,
low
sulfur
loading,
excess
metal,
which
cover
related
for
realizing
high-energy–density
LSBs,
practical
E/S
limited
are
essential.
Under
conditions,
increased
current
on
higher
LiPS
concentration
exacerbate
anode
dendrite
growth,
dead
Li,
reactivity
electrolyte,
LiPSs.
These
problems
lead
rapid
failure
significantly
impacting
electrochemical
performance
LSBs.
Consequently,
protecting
is
crucial
This
paper
introduces
challenges
associated
in
reviews
research
focused
each
battery
component:
anode,
separator/interlayer.
Finally,
we
discuss
future
directions
component
towards
Graphical
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(28)
Опубликована: Май 7, 2024
Alkali
metals
(e.g.
Li,
Na,
and
K)
multivalent
Zn,
Mg,
Ca,
Al)
have
become
star
anodes
for
developing
high-energy-density
rechargeable
batteries
due
to
their
high
theoretical
capacity
excellent
conductivity.
However,
the
inevitable
dendrites
unstable
interfaces
of
metal
pose
challenges
safety
stability
batteries.
To
address
these
issues,
covalent
organic
frameworks
(COFs),
as
emerging
materials,
been
widely
investigated
regular
porous
structure,
flexible
molecular
design,
specific
surface
area.
In
this
minireview,
we
summarize
research
progress
COFs
in
stabilizing
anodes.
First,
present
origins
delve
into
advantages
based
on
physical/chemical
properties
alkali
metals.
Then,
special
attention
has
paid
application
host
design
anodes,
artificial
solid
electrolyte
interfaces,
additives,
solid-state
electrolytes,
separator
modifications.
Finally,
a
new
perspective
is
provided
from
pore
modulation,
synthesis
COFs.
Journal of the American Chemical Society,
Год журнала:
2024,
Номер
146(29), С. 19680 - 19685
Опубликована: Июль 9, 2024
The
pore
shapes
of
two-dimensional
covalent
organic
frameworks
(2D
COFs)
significantly
limit
their
practical
applications
in
separation
and
catalysis.
Although
various
2D
COFs
with
polygonal
pores
have
been
well
developed,
constructing
pentagonal
remains
an
enormous
challenge.
In
this
work,
we
developed
one
kind
the
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
Catalysts
are
essential
for
achieving
high‐performance
lithium–sulfur
batteries.
The
precise
design
and
regulation
of
catalytic
sites
to
strengthen
their
efficiency
robustness
remains
challenging.
In
this
study,
spinel
sulfides
catalyst
principles
through
element
doping
investigated.
This
research
highlights
the
distinct
role
lattice
sulfur
in
lithium
polysulfide
conversion
emphasizes
differences
activity
between
metal
anion
sites.
valence
electron
model
as
a
descriptor
can
characterize
performance,
guiding
(FeCo)
3
(PS)
4
co‐doped
with
cation
anion.
exhibits
highest
performance
among
catalysts
data,
particularly
under
high
loading
conditions.
It
achieves
an
initial
specific
capacity
1205.9
mAh
g
−1
(6.1
cm
−2
)
at
5
mg
1192.7
(11.9
10
,
demonstrating
excellent
electrocatalytic
performance.
Photoassisted
lithium-sulfur
(Li-S)
batteries
offer
a
promising
approach
to
enhance
the
catalytic
transformation
kinetics
of
polysulfide.
However,
development
is
greatly
hindered
by
inadequate
photo
absorption
and
severe
photoexcited
carriers
recombination.
Herein,
photonic
crystal
sulfide
heterojunction
structure
designed
as
bifunctional
electrode
scaffold
for
photoassisted
Li-S
batteries.
Inverse
opal
(IO)
structures
utilize
slow
photon
effect
that
originates
from
their
adjustable
band
gaps,
giving
them
distinctive
optical
response
characteristics.
The
incorporation
SnS/ZnS
within
these
IO
frameworks
further
broadens
light
spectrum
enhances
charge
transfer
process.
This
efficient
hybrid
not
only
adsorption
conversion
polysulfides
at
cathode
but
also
induces
uniform
Li
nucleation
anode.
These
contribute
full
output
high
reversible
capability
1072
mAh
g-1
maintain
stable
cycling
50
cycles.
Additionally,
specific
capacity
698.8
still
obtained
even
under
sulfur
loading
up
4
mg
cm-2.
present
strategy
on
battery
properties
can
be
extended
rationally
construct
other
energy
storage
devices.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 9, 2024
Abstract
Lithium‐sulfur
(Li–S)
batteries
are
facing
a
multitude
of
challenges,
mainly
pertaining
to
the
sluggish
sulfur
redox
kinetics
and
rampant
lithium
dendrite
growth
on
cathode
anode
side,
respectively.
In
this
sense,
MXene
has
shown
conspicuous
advantages
in
serving
as
dual‐functional
promotor
for
Li–S
throughout
morphologic
engineering,
but
still
suffers
from
poor
electrocatalytic
activity
insufficient
lithophilic
sites.
Herein,
atomically
dispersed
Co
sites
seeded
onto
size
effect‐enabled
V
2
C
spheres
(Co‐VC),
leading
generation
unique
coordination
configurations
rich
active
Electrochemical
tests
combined
with
synchrotron
radiation
X‐ray
3D
nano‐computed
tomography
theoretical
calculations
unravel
that
Co‐VC
optimal
environments
simultaneously
boost
reaction
nucleation.
As
consequence,
modified
separator
can
sustain
stable
operation
over
700
cycles
negligible
capacity
decay
at
1.0
C,
delivers
an
areal
9.0
mAh
cm
−2
desired
cyclic
performance
high
loading
7.6
mg
lean
electrolyte
dosage
4.0
µL
S
−1
0.1
C.
The
work
opens
new
avenue
boosting
atomic‐scale
site
design
aid
2D
substrates
toward
pragmatic
batteries.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(28)
Опубликована: Май 7, 2024
Abstract
Alkali
metals
(e.g.
Li,
Na,
and
K)
multivalent
Zn,
Mg,
Ca,
Al)
have
become
star
anodes
for
developing
high‐energy‐density
rechargeable
batteries
due
to
their
high
theoretical
capacity
excellent
conductivity.
However,
the
inevitable
dendrites
unstable
interfaces
of
metal
pose
challenges
safety
stability
batteries.
To
address
these
issues,
covalent
organic
frameworks
(COFs),
as
emerging
materials,
been
widely
investigated
regular
porous
structure,
flexible
molecular
design,
specific
surface
area.
In
this
minireview,
we
summarize
research
progress
COFs
in
stabilizing
anodes.
First,
present
origins
delve
into
advantages
based
on
physical/chemical
properties
alkali
metals.
Then,
special
attention
has
paid
application
host
design
anodes,
artificial
solid
electrolyte
interfaces,
additives,
solid‐state
electrolytes,
separator
modifications.
Finally,
a
new
perspective
is
provided
from
pore
modulation,
synthesis
COFs.
