Polymers,
Journal Year:
2024,
Volume and Issue:
16(5), P. 687 - 687
Published: March 2, 2024
Covalent
organic
frameworks
(COFs)
are
constructed
from
small
molecules
through
reversible
covalent
bonds,
and
therefore
considered
a
special
type
of
polymer.
Small
divided
into
nodes
connectors
based
on
their
roles
in
the
COF’s
structure.
The
connector
generally
forms
bonds
with
node
two
reactive
end
groups.
adjustment
length
facilitates
pore
size.
Due
to
diversity
COFs
have
formed
large
family
since
synthesis
2005.
Among
them,
COF
containing
redox
active
groups
such
as
–C=O–,
–C=N–,
–N=N–
has
received
widespread
attention
field
energy
storage.
ordered
crystal
structure
ensures
arrangement
consistent
size
pores,
which
is
conducive
formation
unobstructed
ion
channels,
giving
these
high-rate
performance
long
cycle
life.
voltage
specific
capacity
jointly
determine
density
cathode
materials.
For
COFs’
materials,
plateau
sites’
VS
metallic
lithium
mostly
between
2
3
V,
great
room
for
improvement.
However,
there
currently
no
feasible
strategy
this.
Therefore,
previous
studies
mainly
improved
theoretical
materials
by
increasing
number
sites.
We
summarized
progress
research
types
recent
years
found
that
functional
can
be
six
subcategories.
According
different
groups,
also
Here,
we
summarize
structure,
unit,
surface
area,
capacity,
range
COFs.
Nano Energy,
Journal Year:
2024,
Volume and Issue:
128, P. 109947 - 109947
Published: July 2, 2024
Performance
of
electrocatalyst
in
an
aqueous
electrolyte
is
greatly
influenced
by
the
structure
electrolyte-electrocatalyst
interface.
Regulating
mass
transfer
important
controlling
surface
reactions
to
alter
overall
reaction
kinetics.
Thus,
modification
interfacial
structures
effective
approach
improving
electrocatalytic
performance.
In
this
paper,
we
report
use
functionalized
amine-based
covalent
organic
frameworks
(COFs)
as
modifier
properties
facilitating
proton
hydrogen
evolution
(HER)
acidic
medium.
Results
from
electrochemical
solid-liquid
interface
(ESLI)-based
density
functional
theory
(DFT)
calculations
suggest
that
COFs
increase
local
concentration
at
COF-electrocatalyst
Our
simulation
data
indicates
enhancement
HER
activity
achieved
partially
through
protonation
site
secondary
amine
COF
on
electrode
surface,
suggesting
a
new
mode
for
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(4), P. 4008 - 4013
Published: Feb. 2, 2024
Oxygen
evolution
reaction
(OER)
plays
an
important
role
in
many
electrocatalysis-related
fields.
However,
the
slow
kinetics
of
OER
seriously
hinders
energy
efficiency.
Here,
we
synthesize
flower-like
Co–Fe–Cr–Mo
medium-entropy
spinel
(MES)
nanosheets
on
nickel
foam
(NF)
using
one-step
solvothermal
method
for
OER.
Due
to
high
stability
and
compositional
diversity,
CoFeCrMoOx/NF
catalyst
exhibits
excellent
electrocatalytic
performance
with
overpotential
only
196
mV
at
10
mA
cm–2
1.0
M
KOH
solution,
much
lower
than
CoFeCrMnOx/NF,
CoFeCrCeOx/NF,
CoFeCrSnOx/NF,
CoFeCrAlOx/NF,
commercial
IrO2
catalysts,
reflecting
that
formation
MES
has
a
positive
effect
improvement
performance.
The
introduction
Mo
increases
active
sites,
promotes
electron
transfer,
accelerates
adsorption
desorption
intermediates,
reduces
barrier,
thus
improves
In
situ
Raman
spectra
indicate
surface
CoOOH
FeOOH
species
are
components
Energy Reviews,
Journal Year:
2024,
Volume and Issue:
3(3), P. 100075 - 100075
Published: Feb. 23, 2024
Both
carbon-based
single
atom
catalysts
(SACs)
and
dual
(DACs)
have
garnered
significant
attention
in
the
field
of
electrochemical
reactions
because
impressive
attributes,
including
exceptional
catalytic
activity,
selectivity,
cost-effectiveness.
The
ability
to
modulate
electronic
structure
geometric
construction
active
sites
within
SACs/DACs
is
paramount
for
unleashing
their
complete
potential,
which
turn
can
ultimately
dictate
behavior
with
unprecedented
precision.
In
this
review,
recent
major
developments
regulation
strategies
modulating
are
summarized.
For
SACs,
recently
reported
modulation
methods
categorized
into
four
strategies,
adjusting
density
atoms,
defect
engineering,
confinement
effect
strain
engineering.
And
DACs,
five
contain
bonded
dual-atom
adjustment,
non-bonded
bridged
metal
nonmetal
bilayer
adjustment
homogeneous
adjustment.
developed
synthetic
comprehensively
summarized,
especially
configuration
discussed
detail,
different
applications
reactions,
unique
mechanism
highlighted.
Finally,
challenges
prospects
tailoring
structures
arrangements
further
discussed.
