ACS Materials Letters,
Год журнала:
2024,
Номер
6(4), С. 1120 - 1129
Опубликована: Фев. 26, 2024
Vinylene-linked
covalent–oganic
frameworks
(COFs),
as
novel
photocatalysts,
have
garnered
considerable
attention
due
to
their
exceptional
stability,
remarkable
π-electron
delocalization,
and
precisely
customizable
structures.
However,
the
design
of
monomers
for
constructing
vinylene-linked
COFs
with
tunable
electronic
structures
is
still
in
its
early
stages
poses
a
number
challenges.
Addressing
this,
tritopic
monomer
was
developed
by
attaching
3-fold
2-methylpyridine
unit
triphenyl-1,3,5-triazine
core.
The
further
condensed
aromatic
dialdehydes
via
solid-state
Knoevenagel
polycondensation
reaction
form
two
2D
(TP-PB
TP-PT
COF),
which
exhibited
excellent
crystallinity,
preeminent
outstanding
delocalization.
More
importantly,
modulation
donor–acceptor
(D–A)
interaction
within
COFs,
semiconducting
properties
could
be
optimized.
Due
stronger
D–A
interactions
TP-PB
COF
containing
1,3,5-triphenylbenzene
than
unit,
broader
visible
light
absorption,
narrower
band
gap,
photocurrent
response,
lower
charge
transfer
resistance,
makes
more
efficient
photocatalyst
photocatalytic
selective
conversions
organic
sulfides
sulfoxides
C-3
thiocyanation
indole
derivatives
high
catalytic
activity
recyclability.
This
work
not
only
demonstrates
construction
but
also
presents
facile
strategy
regulating
such
fine-tuning
matrices.
Journal of the American Chemical Society,
Год журнала:
2023,
Номер
145(31), С. 17309 - 17320
Опубликована: Авг. 1, 2023
Organic
materials
are
promising
for
cation
storage
in
calcium
ion
batteries
(CIBs).
However,
the
high
solubility
of
organic
an
electrolyte
and
low
electronic
conductivity
remain
key
challenges
high-performance
CIBs.
Herein,
a
nitrogen-rich
covalent
framework
with
multiple
carbonyls
(TB-COF)
is
designed
as
aqueous
anode
to
address
those
obstacles.
TB-COF
demonstrates
reversible
capacity
253
mAh
g-1
at
1.0
A
long
cycle
life
(0.01%
decay
per
5
after
3000
cycles).
The
redox
mechanism
Ca2+/H+
co-intercalated
COF
chelating
C═O
C═N
active
sites
validated.
In
addition,
novel
C═C
site
was
identified
Ca2+
storage.
Both
computational
empirical
results
reveal
that
repetitive
unit,
up
nine
ions
stored
three
staggered
intercalation
steps,
involving
distinct
sites.
Finally,
evolution
process
radical
intermediates
further
elucidates
reaction
mechanism.
Chemical Society Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Covalent
organic
frameworks
(COFs)
have
gained
considerable
attention
due
to
their
design
possibilities
as
the
molecular
building
blocks
that
can
stack
in
an
atomically
precise
spatial
arrangement.
Journal of Energy Storage,
Год журнала:
2024,
Номер
85, С. 111040 - 111040
Опубликована: Март 1, 2024
Electrolyte
is
a
crucial
component
in
electrochemical
energy
storage
devices
(EESDs)
such
as
rechargeable
batteries
and
supercapacitors
(SCs).
While
substantial
effort
has
been
directed
to
engineering
the
electrodes,
fewer
but
effective
continuous
efforts
have
devoted
improve
devices'
performance
through
modification
of
their
electrolytes.
Among
these
approaches,
strategic
integration
minor
amounts
additives
led
formation
appropriate
solid-electrolyte
interphase
(SEI)
cathode-electrolyte
(CEI),
well
modifying
ionic
conductivity,
preventing
dendrite
growth,
improving
charge
kinetics.
various
electrolytes,
carbon
quantum
dots
(CDs)
graphene
(GQDs)
emerged
favorable
options
due
positive
influence
on
electrolytes
for
EESDs.
These
QDs
are
soluble
specific
solvents
numerous
functional
moieties
allow
them
act
electrolyte
polyanions.
Furthermore,
excellent
physiochemical
properties
make
candidates
fillers
solid-state
The
excellence
verified
by
characterization
methods
affirming
parameters
ion-diffusion
kinetics,
capacity,
resistance.
application
CDs
GQDs
EESDs
new
ruling
mechanisms
not
well-known
yet.
This
review
article
provides
an
overview
both
liquid
solid
lithium-,
sodium-,
potassium-,
zinc-ion
lithium
metal
besides
SCs.
Herein,
we
aim
offer
valuable
insights
into
designing
fabricating
class
based
realizing
novel
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Июль 24, 2024
Distinct
from
"rocking-chair"
lithium-ion
batteries
(LIBs),
the
unique
anionic
intercalation
chemistry
on
cathode
side
of
dual-ion
(DIBs)
endows
them
with
intrinsic
advantages
low
cost,
high
voltage,
and
eco-friendly,
which
is
attracting
widespread
attention,
expected
to
achieve
next
generation
large-scale
energy
storage
applications.
Although
electrochemical
reactions
anode
DIBs
are
similar
that
LIBs,
in
fact,
match
rapid
insertion
kinetics
anions
consider
compatibility
electrolyte
system
also
serves
as
an
active
material,
materials
play
a
very
important
role,
there
urgent
demand
for
rational
structural
design
performance
optimization.
A
review
summarization
previous
studies
will
facilitate
exploration
optimization
future.
Here,
we
summarize
development
process
working
mechanism
exhaustively
categorize
latest
research
their
applications
different
battery
systems.
Moreover,
design,
reaction
briefly
discussed.
Finally,
fundamental
challenges,
potential
strategies
perspectives
put
forward.
It
hoped
this
could
shed
some
light
researchers
explore
more
superior
advanced
systems
further
promote
DIBs.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
Abstract
Redox‐active
porous
organic
polymers
(POPs)
have
emerged
as
promising
and
sustainable
cathode
materials
(OCMs)
for
lithium‐ion
batteries
(LIBs).
However,
their
performance
is
significantly
limited
by
insufficient
redox‐active
sites
low
intrinsic
conductivity.
Herein,
a
series
of
novel
arylamine‐linked
bipolar
POPs
(denoted
HATN‐AQ,
HATN‐BQ,
HATN‐CBD,
HATN‐PTO)
are
designed
prepared
OCMs
LIBs.
Benefiting
from
high
density
sites,
feature,
arylamine
linkage,
these
exhibited
capacity,
rate,
excellent
long‐term
cycling
stability.
Among
them,
HATN‐PTO
displayed
an
ultrahigh
reversible
capacity
329.6
mAh
g
−1
at
0.2
A
with
energy
716.7
Wh
kg
,
outstanding
rate
(208.7
20
),
superior
stability
(188.9
retained
after
500
cycles
1
).
Furthermore,
the
HATN‐PTO//graphite
full
battery
specific
227.3
maintained
99.1
200
0.5
.
Ex
situ
FT‐IR
XPS
spectra
combined
theoretical
calculations
employed
to
elucidate
dual‐ion
storage
mechanism.
This
work
provides
effective
strategy
designing
high‐capacity
high‐rate
OCMs.
