Advanced Functional Materials,
Год журнала:
2024,
Номер
34(36)
Опубликована: Фев. 14, 2024
Abstract
Monotypic
catalytic
site
for
bifunctional
hydrogen
evolution
reaction
(HER)
and
oxygen
(OER)
at
low
overpotential
is
a
grand
challenge
in
alkaline
water
splitting.
Herein,
new
strategy
of
dual‐type
atomic
site‐support
interaction
reported,
which
ruthenium
heteroatoms
are
situ
implanted
into
both
the
N‐C
nanosheet
matrix
(Ru
1
‐N‐C)
supported
Co
2
P
nanoparticle
lattice
‐P‐Co)
boosting
It
found
that
Ru
‐N‐C
‐P‐Co
can
give
rise
to
synergistic
effect
HER
OER
catalysis.
Density
functional
theory
calculations
disclose
HER,
Ru‐functionalized
sites
assume
task
expediting
H
O
adsorption‐dissociation,
adjacent
coordination
unsaturated
facilitate
following
desorption
kinetic.
The
study
spillover
mechanism
contributes
an
ultralow
polarization
69
mV
10
mA
cm
−2
.
While
OER,
due
electronegativity
discrepancies,
doped
within
triggers
electronic
coupling,
thereby
efficiently
tuning
d
‐band
center.
This
grants
its
characteristic
preferred
modulating
rate‐determining
step
reduce
corresponding
energy
barrier,
leading
superior
activity
work
offers
understandings
catalyzing
different
reactions
with
multiple
intermediate
adsorptions
by
interplays.
Abstract
The
generation
of
green
hydrogen
by
water
splitting
is
identified
as
a
key
strategic
energy
technology,
and
proton
exchange
membrane
electrolysis
(PEMWE)
one
the
desirable
technologies
for
converting
renewable
sources
into
hydrogen.
However,
harsh
anode
environment
PEMWE
oxygen
evolution
reaction
(OER)
involving
four‐electron
transfer
result
in
large
overpotential,
which
limits
overall
efficiency
production,
thus
efficient
electrocatalysts
are
needed
to
overcome
high
overpotential
slow
kinetic
process.
In
recent
years,
noble
metal‐based
(e.g.,
Ru/Ir‐based
metal/oxide
electrocatalysts)
have
received
much
attention
due
their
unique
catalytic
properties,
already
become
dominant
acidic
OER
process
applied
commercial
devices.
these
still
face
thorny
problem
conflicting
performance
cost.
this
review,
first,
metal
briefly
classified
according
forms
existence,
mechanisms
outlined.
Then,
focus
on
summarizing
improvement
strategies
with
respect
activity
stability
over
years.
Finally,
challenges
development
prospects
discussed.
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(19), С. 11149 - 11175
Опубликована: Янв. 1, 2024
The
current
review
discusses
on
vanadium-
and
manganese-based
metal–organic
frameworks
their
derivatives
for
energy
storage
conversion
applications
along
with
the
potential
future
advancements
in
these
fields.
Nanoscale,
Год журнала:
2023,
Номер
15(28), С. 11777 - 11800
Опубликована: Янв. 1, 2023
Transition
metal
nitrides
(TMNs)
have
become
usable
substitutes
for
precious
metals
such
as
Pt
and
Ir
in
the
field
of
electrocatalysis
because
their
high
electrocatalytic
performance,
conductivity,
good
corrosion
resistance
stability.
Urea
oxidation
reaction
(UOR)
is
one
of
the
promising
alternative
anodic
reactions
to
water
that
has
attracted
extensive
attention
in
green
hydrogen
production.
The
application
specifically
designed
electrocatalysts
capable
declining
energy
consumption
and
environmental
consequences
major
challenges
this
field.
Therefore,
goal
achieve
a
resistant,
low-cost,
environmentally
friendly
electrocatalyst.
Herein,
water-stable
fluorinated
Cu(II)
metalorganic
framework
(MOF)
{[Cu2
(L)(H2
O)2
]·(5DMF)(4H2
O)}n
(Cu-FMOF-NH2
;
H4
L
=
3,5-bis(2,4-dicarboxylic
acid)-4-(trifluoromethyl)aniline)
developed
utilizing
an
angular
tetracarboxylic
acid
ligand
incorporates
both
trifluoromethyl
(-CF3
)
amine
(-NH2
groups.
tailored
structure
Cu-FMOF-NH2
where
linkers
are
connected
by
fluoride
bridges
surrounded
dicopper
nodes
reveals
4,24T1
topology.
When
employed
as
electrocatalyst,
requires
only
1.31
V
versus
reversible
electrode
(RHE)
deliver
10
mA
cm-2
current
density
1.0
m
KOH
with
0.33
urea
electrolyte
delivered
even
higher
(50
at
1.47
RHE.
This
performance
superior
several
reported
catalysts
including
commercial
RuO2
catalyst
overpotential
1.52
investigation
opens
new
opportunities
develop
utilize
pristine
MOFs
potential
electrocatalyst
for
various
catalytic
reactions.
Materials Chemistry Frontiers,
Год журнала:
2023,
Номер
7(11), С. 2120 - 2152
Опубликована: Янв. 1, 2023
In
this
review,
recent
advancement
of
MOF
based
materials
and
their
role
towards
OER
is
explored.
Tuning
structures
by
adopting
various
synthetic
strategical
techniques
are
discussed
for
the
first
time.
