Chinese Journal of Chemistry,
Год журнала:
2024,
Номер
42(20), С. 2520 - 2535
Опубликована: Июнь 19, 2024
Comprehensive
Summary
The
electrochemical
processes
of
oxygen
reduction
reaction
(ORR)
and
evolution
(OER)
play
a
crucial
role
in
various
energy
storage
conversion
systems.
However,
the
inherently
slow
kinetics
reversible
reactions
present
an
urgent
demand
for
development
efficient
electrocatalysts.
Recently,
metal‐organic
framework
(MOF)
derivatives
have
attracted
extensive
attention
electrocatalysis
research
due
to
their
unique
porous
structure,
abundant
active
sites,
tunable
structural
properties.
Especially,
optimization
electronic
structure
sites
MOF
has
been
proven
as
effective
strategy
enhance
catalytic
activity.
In
this
review,
we
provide
overview
strategies
advanced
catalysts
O—O
bond
activation
reactions,
including
construction
synergistic
effects
between
multiple
heterogeneous
interfaces,
utilization
metal
support
interactions,
precise
modulation
organic
ligands
surrounding
at
atomic
level.
Furthermore,
review
offers
theoretical
insights
into
mechanisms
derivatives,
well
identification
sites.
Finally,
potential
challenges
prospects
are
discussed.
This
contributes
understanding
advancement
Key
Scientists
Angewandte Chemie International Edition,
Год журнала:
2023,
Номер
63(3)
Опубликована: Дек. 5, 2023
This
work
reports
that
a
low-temperature
thermal
calcination
strategy
was
adopted
to
modulate
the
electronic
structure
and
attain
an
abundance
of
surface-active
sites
while
maintaining
crystal
morphology.
All
experiments
demonstrate
new
photocatalyst
nano
MIL-125(Ti)-250
obtained
by
has
abundant
Ti
Abstract
Developing
efficient,
lightweight,
and
durable
all‐solid‐state
supercapacitors
is
crucial
for
future
energy
storage
systems.
The
study
focuses
on
optimizing
electrode
materials
to
achieve
high
capacitance
stability.
This
introduces
a
novel
two‐step
pyrolysis
process
synthesize
activated
carbon
nanosheets
from
jute
sticks
(JAC),
resulting
in
an
optimized
JAC‐2
material
with
yield
(≈24%)
specific
surface
area
(≈2600
m
2
g
−1
).
Furthermore,
innovative
situ
synthesis
approach
employed
hybrid
nanocomposites
(NiCoLDH‐1@JAC‐2)
by
integrating
JAC
nickel‐cobalt‐layered
double
hydroxide
nanoflowers
(NiCoLDH).
These
serve
as
positive
the
negative
asymmetric
(HSCs),
exhibiting
remarkable
performance
metrics.
HSCs
of
750
F
,
capacity
209
mAh
(at
0.5
A
),
density
100
Wh
kg
250
W
)
using
PVA/KOH
solid
electrolyte,
while
maintaining
outstanding
cyclic
Importantly,
functional
theory
framework
utilized
validate
experimental
findings,
underscoring
potential
this
enhancing
HSC
enabling
large‐scale
production
transition
metal‐based
layered
hydroxides.
Angewandte Chemie,
Год журнала:
2023,
Номер
136(3)
Опубликована: Дек. 5, 2023
Abstract
This
work
reports
that
a
low‐temperature
thermal
calcination
strategy
was
adopted
to
modulate
the
electronic
structure
and
attain
an
abundance
of
surface‐active
sites
while
maintaining
crystal
morphology.
All
experiments
demonstrate
new
photocatalyst
nano
MIL‐125(Ti)‐250
obtained
by
has
abundant
Ti
3+
induced
oxygen
vacancies
high
specific
surface
area.
facilitates
adsorption
activation
N
2
molecules
on
active
in
photocatalytic
nitrogen
fixation.
The
NH
3
yield
over
is
enhanced
156.9
μmol
g
−1
h
,
twice
higher
than
parent
MIL‐125(Ti)
(76.2
).
Combined
with
density
function
theory
(DFT),
it
shows
pattern
tends
be
from
“end‐on”
“side‐on”
mode,
which
thermodynamically
favourable.
Moreover,
electrochemical
tests
atomic
ratio
/Ti
4+
can
enhance
carrier
separation,
also
promotes
efficiency
may
offer
insights
into
design
innovative
photocatalysts
for
various
chemical
reduction
reactions.
Advanced Materials,
Год журнала:
2024,
Номер
36(31)
Опубликована: Май 23, 2024
Rationally
designed
defects
in
a
crystal
can
confer
unique
properties.
This
study
showcases
novel
dual-defects
engineering
strategy
to
tailor
the
electrochemical
response
of
metal-organic
framework
(MOF)
materials
used
for
energy
storage.
Salicylic
acid
(SA)
is
identified
as
an
effective
modulator
control
MOF-74
growth
and
induce
structural
defects,
cobalt
cation
doping
adopted
introducing
second
type
defect.
The
resulting
engineered
bimetallic
MOF
exhibits
discharging
capacity
218.6
mAh
g
Abstract
Exploring
new
carbon‐based
electrode
materials
is
quite
necessary
for
enhancing
capacitive
deionization
(CDI).
Here,
hollow
mesoporous
carbon
spheres
(HMCSs)/metal‐organic
frameworks
(MOFs)
derived
(NC(M)/HMCSs
and
NC(M)@HMCSs)
are
successfully
prepared
by
interface‐coating
space‐encapsulating
design,
respectively.
The
obtained
NC(M)/HMCSs
NC(M)@HMCSs
possess
a
hierarchical
nanoarchitecture
with
abundant
nitrogen
doping,
high
specific
surface
area,
meso‐/microporous
pores.
These
merits
conducive
to
rapid
ion
diffusion
charge
transfer
during
the
adsorption
process.
Compared
NC(M)/HMCSs,
exhibit
superior
electrochemical
performance
due
their
better
utilization
of
internal
space
carbon,
forming
an
interconnected
3D
framework.
In
addition,
introduction
Ni
ions
more
synergistic
effect
between
ZIF(M)‐derived
N‐doped
shell
compared
other
(Mn,
Co,
Cu
ions).
resultant
Ni‐1‐800‐based
CDI
device
exhibits
excellent
salt
capacity
(SAC,
37.82
mg
g
−1
)
good
recyclability.
This
will
provide
direction
MOF
nanoparticle‐driven
assembly
strategy
application
CDI.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Фев. 23, 2024
Abstract
Adopting
a
nano-
and
micro-structuring
approach
to
fully
unleashing
the
genuine
potential
of
electrode
active
material
benefits
in-depth
understandings
research
progress
toward
higher
energy
density
electrochemical
storage
devices
at
all
technology
readiness
levels.
Due
various
challenging
issues,
especially
limited
stability,
micro-structured
(NMS)
electrodes
undergo
fast
performance
degradation.
The
emerging
NMS
scaffold
design
is
pivotal
aspect
many
as
it
endows
them
with
both
robustness
enhancement,
even
though
only
occupies
complementary
facilitating
components
for
main
mechanism.
However,
extensive
efforts
are
urgently
needed
optimizing
stereoscopic
geometrical
scaffolds
minimize
volume
ratio
maximize
their
functionality
fulfill
ever-increasing
dependency
desire
power
source
supplies.
This
review
will
aim
highlighting
these
strategies,
summarizing
corresponding
strengths
challenges,
thereby
outlining
solutions
resolve
principles,
key
perspectives
future
in
this
field.
Therefore,
be
one
earliest
reviews
from
viewpoint.
