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 the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(2), P. 1318 - 1325
Published: Jan. 5, 2024
Sp2-carbon-conjugated
covalent
organic
frameworks
(sp2c-COFs)
have
emerged
as
promising
platforms
for
phototo–chemical
energy
conversion
due
to
their
tailorable
optoelectronic
properties,
in-plane
π-conjugations,
and
robust
structures.
However,
the
development
of
sp2c-COFs
in
photocatalysis
is
still
highly
hindered
by
limited
linkage
chemistry.
Herein,
we
report
a
novel
thiadiazole-bridged
sp2c-COF
(sp2c-COF-ST)
synthesized
thiadiazole-mediated
aldol-type
polycondensation.
The
resultant
sp2c-COF-ST
demonstrates
high
chemical
stability
under
strong
acids
bases
(12
M
HCl
or
12
NaOH).
electro-deficient
thiadiazole
together
with
fully
conjugated
planar
skeleton
endows
superior
photoelectrochemical
performance
charge-carrier
separation
migration
ability.
As
result,
when
employed
photocathode,
exhibits
significant
photocurrent
up
∼14.5
μA
cm–2
at
0.3
V
vs
reversible
hydrogen
electrode
(RHE)
visible-light
irradiation
(>420
nm),
which
much
higher
than
those
analogous
COFs
partial
imine
linkages
(mix-COF-SNT
∼
9.5
cm–2)
full
(imi-COF-SNNT
4.9
cm–2),
emphasizing
importance
structure–property
relationships.
Further
temperature-dependent
photoluminescence
spectra
density
functional
theory
calculations
demonstrate
that
has
smaller
exciton
binding
well
effective
mass
comparison
mix-COF-SNT
imi-COF-SNNT,
suggests
sp2c-conjugated
enhances
dissociation
carrier
light
irradiation.
This
work
highlights
design
preparation
photocatalytic
performance.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(21)
Published: Feb. 10, 2024
Abstract
The
practical
application
of
lithium
(Li)
metal
batteries
is
inhibited
by
accumulative
Li
dendrites
and
continuous
active
consumption
during
cycling,
which
results
in
a
low
Coulombic
efficiency
short
lifetime.
Constructing
artificial
solid‐electrolyte
interphase
(SEI)
layer
anode,
such
as
2D
covalent
organic
frameworks
(COFs),
an
effective
strategy
to
restrain
the
formation
improve
cycling
performance.
However,
exploration
3D
COFs
protecting
layers
rarely
reported,
because
preconception
that
interconnect
pores
eventually
cause
disordered
direction.
crown
ether‐based
COF
with
ffc
topology
layer,
ether
units
are
arranged
parallel
vertical
orientation
along
electrode,
demonstrated.
strong
coupling
effect
between
+
accelerates
diffusion
kinetics
enables
homogeneous
flux,
resulting
high
transference
number
0.85
smooth
deposition
Li/COF‐Cu
cells
display
lower
Li‐nucleation
overpotential
(17.4
mV)
average
≈98.6%
340
cycles
incorporation.
This
work
gives
new
insight
into
designing
for
energy
storage
systems.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(11)
Published: Jan. 16, 2024
Abstract
The
growth
of
disorganized
lithium
dendrites
and
weak
solid
electrolyte
interphase
greatly
impede
the
practical
application
metal
batteries.
Herein,
we
designed
synthesized
a
new
kind
stable
polyimide
covalent
organic
frameworks
(COFs),
which
have
high
density
well‐aligned
lithiophilic
quinoxaline
phthalimide
units
anchored
within
uniform
one‐dimensional
channels.
COFs
can
serve
as
an
artificial
on
anode,
effectively
guiding
deposition
ions
inhibiting
dendrites.
unsymmetrical
Li||COF−Cu
battery
exhibits
Coulombic
efficiency
99
%
at
current
0.5
mA
cm
−2
,
be
well
retained
up
to
400
cycles.
Meanwhile,
Li‐COF||LFP
full
cell
shows
over
charge
0.3
C.
And
its
capacity
maintained
91
even
after
150
Therefore,
significant
electrochemical
cycling
stability
illustrates
feasibility
employing
in
solving
disordered
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Jan. 27, 2024
Abstract
The
synthesis
of
three-dimensional
covalent
organic
frameworks
with
highly
connected
building
blocks
presents
a
significant
challenge.
In
this
study,
we
report
two
3D
COFs
the
nia
topology,
named
JUC-641
and
JUC-642,
by
introducing
planar
hexagonal
triangular
prism
nodes.
Notably,
our
adsorption
studies
breakthrough
experiments
reveal
that
both
exhibit
exceptional
separation
capabilities,
surpassing
previously
reported
most
porous
polymers,
factor
up
to
2.02
for
benzene
cyclohexane.
Additionally,
dispersion-corrected
density
functional
theory
analysis
suggests
good
performance
these
can
be
attributed
incorporation
aromatic
presence
extensive
pore
structures.
Consequently,
research
not
only
expands
diversity
but
also
highlights
potential
COF
materials
as
promising
candidates
environmentally-friendly
applications.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(15)
Published: Feb. 9, 2024
Developing
high
connectivity
(>8)
three-dimensional
(3D)
covalent
organic
frameworks
(COFs)
towards
new
topologies
and
functions
remains
a
great
challenge
owing
to
the
difficulty
in
getting
building
blocks.
This
however
represents
most
important
step
promoting
diversity
of
COFs
due
still
limited
dynamic
bonds
available
for
constructing
at
this
stage.
Herein,
highly
connected
phthalocyanine-based
(Pc-based)
3D
MPc-THHI-COFs
(M=H
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(30)
Published: May 13, 2024
Abstract
Three‐dimensional
covalent
organic
frameworks
(3D
COFs),
recognized
for
their
tailorable
structures
and
accessible
active
sites,
offer
a
promising
platform
developing
advanced
photocatalysts.
However,
the
difficulty
in
synthesis
functionalization
of
3D
COFs
hinders
further
development.
In
this
study,
we
present
series
3D‐
bcu
‐COFs
with
8
connected
porphyrin
units
linked
by
linear
linkers
through
imine
bonds
as
versatile
photocatalyst
design.
The
photoresponse
was
initially
modulated
functionalizing
benzo‐thiadiazole
or
benzo‐selenadiazole
groups.
Furthermore,
taking
advantage
well‐exposed
sites
‐COFs,
photocatalytic
activity
optimized
stepwise
protonation
centers.
dual
protonated
COF
groups
exhibited
enhanced
charge
separation,
leading
to
an
increased
H
2
O
production
under
visible
light.
This
enhancement
demonstrates
combined
benefits
linker
on
efficiency.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(26)
Published: April 15, 2024
Abstract
The
synthesis
and
characterization
of
porphyrin
center
regulated
three‐dimensional
covalent
organic
frameworks
(COFs)
with
2‐fold
interpenetrated
scu
or
sqc
topology
have
been
investigated.
These
COFs
exhibit
unique
structural
features
properties,
making
them
promising
candidates
for
photocatalytic
applications
in
CO
2
reduction
artemisinin
synthesis.
serves
as
an
anchor
metal
ions,
allowing
precise
control
over
structures
functions
the
frameworks.
Furthermore,
coordination
within
framework
imparts
desirable
catalytic
enabling
their
potential
use
reactions.
Overall,
these
metal‐controlled
offer
exciting
opportunities
development
advanced
materials
tailored
functionalities.
Journal of the American Chemical Society,
Journal Year:
2024,
Volume and Issue:
146(42), P. 28932 - 28940
Published: Oct. 11, 2024
Single-crystalline
covalent
organic
frameworks
(COFs)
are
highly
desirable
toward
understanding
their
pore
chemistry
and
functions.
Herein,
two
50–100
μm
single-crystalline
three-dimensional
(3D)
COFs,
TAM-TFPB-COF
TAPB-TFS-COF,
were
prepared
from
the
condensation
of
4,4′,4″,4‴-methanetetrayltetraaniline
(TAM)
with
3,3′,5,5′-tetrakis(4-formylphenyl)bimesityl
(TFPB)
3,3′,5,5′-tetrakis(4-aminophenyl)bimesityl
(TAPB)
4,4′,4″,4‴-silanetetrayltetrabenzaldehyde
(TFS),
respectively,
in
1,4-dioxane
under
catalysis
acetic
acid.
Single-crystal
3D
electron
diffraction
reveals
triply
interpenetrated
dia-b
networks
atom
resolution,
while
isostructure
TAPB-TFS-COF
was
disclosed
by
synchrotron
single-crystal
X-ray
powder
Le
Bail
refinements.
The
nitrogen
sorption
measurements
at
77
K
disclose
microporosity
nature
both
activated
COFs
exceptionally
high
Brunauer–Emmett–Teller
surface
areas
3533
4107
m2
g–1,
representing
thus
far
record
specific
area
among
imine-bonded
COFs.
This
enables
to
exhibit
also
methane
uptake
capacities
up
28.9
wt
%
(570
cm3
g–1)
25
°C
200
bar
all
reported
far.
work
not
only
presents
structures
exceptional
but
provides
an
example
engineering
adjust
permanent
microporous
for
storage.
