Advanced Materials,
Journal Year:
2023,
Volume and Issue:
36(4)
Published: Sept. 1, 2023
Abstract
Lithium–sulfur
(Li–S)
batteries
stand
out
for
their
high
theoretical
specific
capacity
and
cost‐effectiveness.
However,
the
practical
implementation
of
Li–S
is
hindered
by
issues
such
as
shuttle
effect,
tardy
redox
kinetics,
dendrite
growth.
Herein,
an
appealingly
designed
covalent
organic
framework
(COF)
with
bi‐functional
active
sites
cyanide
groups
polysulfide
chains
(COF‐CN‐S)
developed
cooperative
functional
promoters
to
simultaneously
address
dendrites
effect
issues.
Combining
in
situ
techniques
calculations,
it
can
be
demonstrated
that
unique
chemical
architecture
COF‐CN‐S
capable
performing
following
functions:
1)
The
delivers
significantly
enhanced
Li
+
transport
capability
due
abundant
ion‐hopping
(cyano‐groups);
2)
functions
a
selective
ion
sieve
regulating
dynamic
behavior
anions
,
thus
inhibiting
growth;
3)
acting
mediator,
effectively
control
electrochemical
polysulfides
enhance
conversion
kinetics.
Based
on
above
advantages,
endows
excellent
performance.
This
study
highlights
significance
interface
modification
offers
novel
insights
into
rational
design
materials
realm.
Advanced Materials,
Journal Year:
2023,
Volume and Issue:
35(32)
Published: March 24, 2023
Lithium-sulfur
(Li-S)
batteries
have
become
one
of
the
most
promising
new-generation
energy
storage
systems
owing
to
their
ultrahigh
density
(2600
Wh
kg-1
),
cost-effectiveness,
and
environmental
friendliness.
Nevertheless,
practical
applications
are
seriously
impeded
by
shuttle
effect
soluble
lithium
polysulfides
(LiPSs),
uncontrolled
dendrite
growth
metallic
Li,
which
result
in
rapid
capacity
fading
battery
safety
problems.
A
systematic
comprehensive
review
cooperative
combination
tackling
fundamental
problems
terms
cathode
anode
synchronously
is
still
lacking.
Herein,
for
first
time,
strategies
inhibiting
behavior
dendrite-free
Li-S
simultaneously
summarized
classified
into
three
parts,
including
"two-in-one"
S-cathode
Li-anode
host
materials
toward
full
cell,
"two
birds
with
stone"
modified
functional
separators,
tailoring
electrolyte
stabilizing
sulfur
electrodes.
This
also
emphasizes
chemistry
mechanism
catalyst
principles
improving
electrochemical
performance;
advanced
characterization
technologies
monitor
real-time
LiPS
evolution
discussed
detail.
The
problems,
perspectives,
challenges
respect
issues
as
well
application
proposed.
Advanced Energy Materials,
Journal Year:
2023,
Volume and Issue:
13(10)
Published: Jan. 20, 2023
Abstract
Lithium–sulfur
batteries
are
recognized
as
one
of
the
most
promising
next‐generation
energy‐storage
technologies
owing
to
their
high
energy
density
and
low
cost.
Nevertheless,
shuttle
effect
polysulfide
intermediates
formation
lithium
dendrites
principal
reasons
that
restrict
practical
adoption
current
Li–S
batteries.
Adjustable
frameworks,
structural
variety,
functional
adaptability
covalent
organic
frameworks
(COFs)
have
potential
overcome
issues
associated
with
battery
technology.
Herein,
a
summary
is
presented
emerging
COF
materials
in
addressing
challenging
problems
terms
sulfur
hosts,
modified
separators,
artificial
solid
electrolyte
interphase
layers,
solid‐state
electrolytes.
This
comprehensive
overview
focuses
on
design
chemistry
COFs
used
upgrade
Furthermore,
existing
difficulties,
prospective
remedies,
research
directions
for
discussed,
laying
groundwork
future
advancements
this
class
fascinating
materials.
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(3), P. 1475 - 1496
Published: Jan. 16, 2023
Multicomponent
reactions
(MCRs)
combine
at
least
three
reactants
to
afford
the
desired
product
in
a
highly
atom-economic
way
and
are
therefore
viewed
as
efficient
one-pot
combinatorial
synthesis
tools
allowing
one
significantly
boost
molecular
complexity
diversity.
Nowadays,
MCRs
no
longer
confined
organic
have
found
applications
materials
chemistry.
In
particular,
can
be
used
prepare
covalent
frameworks
(COFs),
which
crystalline
porous
assembled
from
monomers
exhibit
broad
range
of
properties
applications.
This
synthetic
approach
retains
advantages
small-molecule
MCRs,
not
only
strengthening
skeletal
robustness
COFs,
but
also
providing
additional
driving
forces
for
their
crystallization,
has
been
series
robust
COFs
with
diverse
The
present
perspective
article
provides
general
background
discusses
types
employed
COF
date,
addresses
related
critical
challenges
future
perspectives
inspire
MCR-based
design
new
promote
further
progress
this
emerging
field.
Angewandte Chemie International Edition,
Journal Year:
2022,
Volume and Issue:
61(47)
Published: Oct. 4, 2022
Lithium-sulfur
(Li-S)
batteries
with
high
energy
density
are
currently
receiving
enormous
attention.
However,
their
redox
kinetics
at
low
temperature
is
extremely
tardy,
and
polysulfides
shuttling
serious
temperature,
which
severely
hinders
the
implementation
of
wide-temperature
Li-S
batteries.
Herein,
we
propose
an
all-climate
battery
based
on
ether-based
electrolyte
by
using
a
porous
sub-nano
aromatic
framework
(SAF)
modified
separator.
It's
demonstrated
that
fully
conjugated
SAF-3
small
pore
size
(0.97
nm)
narrow
band
gap
(1.72
eV)
could
efficiently
block
elevated
boost
conversion
temperature.
Consequently,
cells
work
well
in
wide
ranging
from
-40
to
60
°C.
Furthermore,
when
operated
room
cell
exhibits
90
%
capacity
retention
over
100
cycles
under
high-sulfur
loading
(5.0
mg
cm-2
)
lean
(5
μL
mg-1
).
Journal of the American Chemical Society,
Journal Year:
2023,
Volume and Issue:
145(25), P. 13494 - 13513
Published: June 12, 2023
Redox-active
covalent
organic
frameworks
(COFs)
have
recently
emerged
as
advanced
electrodes
in
polymer
batteries.
COFs
provide
ideal
molecular
precision
for
understanding
redox
mechanisms
and
increasing
the
theoretical
charge-storage
capacities.
Furthermore,
functional
groups
on
pore
surface
of
highly
ordered
easily
accessible
interaction
sites,
which
can
be
modeled
to
establish
a
synergy
between
ex
situ/in
situ
mechanism
studies
computational
methods,
permitting
creation
predesigned
structure–property
relationships.
This
perspective
integrates
categorizes
functionalities
COFs,
providing
deeper
mechanistic
investigation
guest
ion
interactions
Additionally,
it
highlights
tunable
electronic
structural
properties
that
influence
activation
reactions
this
promising
electrode
material.
Chemical Reviews,
Journal Year:
2024,
Volume and Issue:
124(8), P. 4935 - 5118
Published: April 10, 2024
Rechargeable
metal-sulfur
batteries
are
considered
promising
candidates
for
energy
storage
due
to
their
high
density
along
with
natural
abundance
and
low
cost
of
raw
materials.
However,
they
could
not
yet
be
practically
implemented
several
key
challenges:
(i)
poor
conductivity
sulfur
the
discharge
product
metal
sulfide,
causing
sluggish
redox
kinetics,
(ii)
polysulfide
shuttling,
(iii)
parasitic
side
reactions
between
electrolyte
anode.
To
overcome
these
obstacles,
numerous
strategies
have
been
explored,
including
modifications
cathode,
anode,
electrolyte,
binder.
In
this
review,
fundamental
principles
challenges
first
discussed.
Second,
latest
research
on
is
presented
discussed,
covering
material
design,
synthesis
methods,
electrochemical
performances.
Third,
emerging
advanced
characterization
techniques
that
reveal
working
mechanisms
highlighted.
Finally,
possible
future
directions
practical
applications
This
comprehensive
review
aims
provide
experimental
theoretical
guidance
designing
understanding
intricacies
batteries;
thus,
it
can
illuminate
pathways
progressing
high-energy-density
battery
systems.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(27), P. 14489 - 14538
Published: Jan. 1, 2023
Covalent
organic
frameworks
provide
a
platform
for
the
integration
of
functional
linkers
into
ordered
yet
tunable
two-dimensional
to
yield
π–π
stacked
conjugated
materials
photocatalytic
water
splitting
hydrogen
generation.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(32)
Published: May 17, 2023
Lithium-sulphur
(Li-S)
batteries
are
a
promising
alternative
power
source,
as
they
can
provide
higher
energy
density
than
current
lithium-ion
batteries.
Porous
materials
often
used
cathode
act
host
for
sulphur
in
such
Recently,
covalent
organic
frameworks
(COFs)
have
also
been
used,
however
typically
suffer
from
stability
issues,
resulting
limited
and
thus
insufficient
durability
under
practical
conditions
applications.
Herein,
we
report
the
synthesis
of
crystalline
porous
imine-linked
triazine-based
dimethoxybenzo-dithiophene
functionalized
COF
(TTT-DMTD)
incorporating
high-density
redox
sites.
The
imine
linkages
were
further
post-synthetically
transformed
to
yield
robust
thiazole-linked
(THZ-DMTD)
by
utilizing
sulphur-assisted
chemical
conversion
method,
while
maintaining
crystallinity.
As
synergistic
effect
its
high
crystallinity,
porosity
presence
redox-active
moieties,
THZ-DMTD
exhibited
capacity
long-term
(642
mAh
g-1
at
1.0
C;
78.9
%
retention
after
200
cycles)
when
applied
material
Li-S
battery.
