Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(34), P. 16037 - 16046
Published: Aug. 9, 2024
The
core
principles
of
multicomponent
interface
and
electronic
structure
engineering
are
essential
in
designing
high-performance
catalysts
for
the
oxygen
evolution
reaction
(OER).
However,
combining
these
aspects
within
a
catalyst
is
significant
challenge.
In
this
investigation,
novel
approach
involving
development
hybrid
Ir-doped
CoMO4–Co(OH)2
(M
=
W
Mo)
hollow
nanoboxes
was
introduced,
enabling
remarkably
efficient
water
oxidation
electrocatalysis.
Constructed
from
ultrathin
nanosheet-assembled
nanoboxes,
structures
boast
wealth
active
centers
intermediate
species,
which
turn
enhance
both
charge
transfer
mass
transport
capabilities.
Moreover,
compelling
synergistic
effects
arising
interaction
between
CoMO4
Co(OH)2
significantly
bolster
OER
electrocatalysis
by
facilitating
electron
transfer.
introduction
Ir
atoms
serves
to
strategically
adjust
structure,
fine-tune
its
state,
operate
as
electrocatalysis,
thus
diminishing
overpotential.
This
configuration
results
Ir-CoWO4–Co(OH)2
Ir-CoMoO4–Co(OH)2
exhibiting
impressively
low
overpotentials
252
261
mV,
respectively,
10
mA
cm–2.
Utilized
conjunction
with
Pt/C
two-electrode
system
overall
splitting,
mere
1.53
V
cell
potential
needed
achieve
desired
cm–2
current
density.
ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
6(5), P. 1722 - 1731
Published: March 29, 2024
The
electrochemical
methanol–hydrogen
transformation
as
a
significant
technique
for
hydrogen
generation
is
limited
by
low
Pt
catalytic
efficiency.
Herein,
the
doping
and
interfacial
support
engineering
of
MoSe2
nanosheets
NH3
plasma
confined
in
mesoporous
hollow-carbon-spheres-supported
nanoparticles
(Pt/N-MoSe2@MHCS)
were
demonstrated
novel
platform
catalyzing
methanol
electrolysis.
Experiments
density
functional
theory
(DFT)
calculations
confirm
that
band
structure
species
downshifted
to
weaken
adsorption
energy
COad/Had,
resulting
improved
CO-poisoning
resistance
accelerated
electrocatalytic
kinetics.
As
result,
Pt/N-MoSe2@MHCS
shows
highest
current
99.2
mA
cm–2
oxidation
overpotential
26
mV@10
evolution.
methanol-assisted
water
electrolyzer
assembled
showed
cell
voltage
1070
mV
reach
10
cm–2.
This
work
provides
guidance
design
reasonable
noble-metal
catalysts
electrolysis
production.
Materials Science for Energy Technologies,
Journal Year:
2024,
Volume and Issue:
8, P. 44 - 65
Published: July 26, 2024
Hydrogen
has
attracted
growing
research
interest
due
to
its
exceptionally
high
energy
per
mass
content
and
being
a
clean
carrier,
unlike
the
widely
used
hydrocarbon
fuels.
With
possibility
of
long-term
storage
re-electrification,
hydrogen
promises
promote
effective
utilization
renewable
sustainable
resources.
Clean
can
be
produced
through
renewable-powered
water
electrolysis
process.
Although
alkaline
is
currently
mature
commercially
available
technology
for
production,
it
several
shortcomings
that
hinder
integration
with
intermittent
fluctuating
sources.
The
proton
exchange
membrane
(PEMWE)
been
developed
offer
voltage
efficiencies
at
current
densities.
Besides,
PEMWE
cells
are
characterized
by
fast
system
response
power,
enabling
operations
broader
partial
power
load
ranges
while
consistently
delivering
high-purity
low
ohmic
losses.
Recently,
much
effort
devoted
improving
efficiency,
performance,
durability,
economy
cells.
activities
in
this
context
include
investigations
different
cell
component
materials,
protective
coatings,
material
characterizations,
as
well
synthesis
analysis
new
electrocatalysts
enhanced
electrochemical
activity
stability
minimized
use
noble
metals.
Further,
many
modeling
studies
have
reported
analyze
performance
considering
electrochemistry,
overvoltage,
thermodynamics.
Thus,
imperative
review
compile
recent
covering
multiple
aspects
one
literature
present
advancements
limitations
field.
This
article
offers
comprehensive
state-of-the-art
It
compiles
on
each
discusses
how
characteristics
these
components
affect
overall
performance.
In
addition,
various
catalyst
materials
reviewed.
thermodynamics
electrochemistry
electrolytic
splitting
described,
inherent
overvoltage
elucidated.
modeling,
aimed
analyzing
cells,
compiled.
Overall,
provides
components,
electrocatalysts,
but
pursuit
seamless
transition
energy.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(26), P. 16413 - 16449
Published: June 21, 2024
Layered
double
hydroxides
(LDHs),
especially
those
containing
nickel
(Ni),
are
increasingly
recognized
for
their
potential
in
photo(-/)electrocatalytic
water
oxidation
due
to
the
abundant
availability
of
Ni,
corrosion
resistance,
and
minimal
toxicity.
This
review
provides
a
comprehensive
examination
Ni-based
LDHs
electrocatalytic
(EC),
photocatalytic
(PC),
photoelectrocatalytic
(PEC)
processes.
The
delves
into
operational
principles,
highlighting
similarities
distinctions
as
well
benefits
limitations
associated
with
each
method
oxidation.
It
includes
detailed
discussion
on
synthesis
monolayer,
ultrathin,
bulk
LDHs,
focusing
merits
drawbacks
inherent
approach.
Regarding
EC
oxygen
evolution
reaction
(OER),
strategies
improve
catalytic
performance
insights
structural
during
process
summarized.
Furthermore,
extensively
covers
advancements
PEC
OER,
including
an
analysis
semiconductors
paired
form
photoanodes,
focus
enhanced
activity,
stability,
underlying
mechanisms
facilitated
by
LDHs.
concludes
addressing
challenges
prospects
development
innovative
LDH
catalysts
practical
applications.
provided
this
paper
will
not
only
stimulate
further
research
but
also
engage
scientific
community,
thus
driving
field
forward.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(2), P. 537 - 537
Published: Jan. 22, 2024
Proton
Exchange
Membrane
Water
Electrolysis
(PEMWE)
under
acidic
conditions
outperforms
alkaline
water
electrolysis
in
terms
of
less
resistance
loss,
higher
current
density,
and
produced
hydrogen
purity,
which
make
it
more
economical
long-term
applications.
However,
the
efficiency
PEMWE
is
severely
limited
by
slow
kinetics
anodic
oxygen
evolution
reaction
(OER),
poor
catalyst
stability,
high
cost.
Therefore,
researchers
past
decade
have
made
great
efforts
to
explore
cheap,
efficient,
stable
electrode
materials.
Among
them,
RuO2
electrocatalyst
has
been
proved
be
a
major
promising
alternative
Ir-based
catalysts
most
OER
owing
its
excellent
electrocatalytic
activity
pH
adaptability.
In
this
review,
we
elaborate
two
mechanisms
(lattice
mechanism
adsorbate
mechanism),
comprehensively
summarize
discuss
recently
reported
RuO2-based
electrocatalysts
conditions,
propose
many
advanced
modification
strategies
further
improve
stability
OER.
Finally,
provide
suggestions
for
overcoming
challenges
faced
practical
applications
prospects
future
research.
This
review
provides
perspectives
guidance
rational
design
highly
active
based
on
PEMWE.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
14(4), P. 2324 - 2332
Published: Jan. 30, 2024
Replacing
platinum-group
metals
by
Ni-based
catalysts
for
the
alkaline
hydrogen
oxidation
reaction
(HOR)
is
highly
desired
anion-exchange
membrane
fuel
cells
(AEMFCs),
while
huge
challenges
still
exist
due
to
sluggish
kinetics
and
oxidative
deactivation
of
Ni
active
centers.
Herein,
we
report
an
ingenious
design
microstructured
electrocatalysts
featured
nanoparticulate
NiMo
alloy
cores
encapsulated
N-doped
carbon
layer
shells
(NiMo-5%@NC)
address
these
problems.
Electrochemical
experiments
theoretical
calculations
confirm
that
confinement
effect
can
rationally
weaken
binding
energy
oxygenated
species
through
direct
interactions
with
layers
rather
than
relying
on
traditionally
regulated
electronic
structures
surfaces.
This
ultimately
reduces
barrier
water
formation,
potential-determining
step
HOR
undergoing
bifunctional
path.
Moreover,
incorporation
not
only
enhances
passivation
resistance
surfaces
but
also
alleviates
dissolution
alloyed
Mo-species,
resulting
in
obviously
improved
stability.
As
a
result,
NiMo-5%@NC
exhibits
significantly
activity
stability
compared
counterpart
without
protection
(NiMo-5%).
work
shows
comprehensive
insights
into
exerted
shells,
providing
different
light
guidelines
deal
centers
AEMFCs.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(35), P. 18502 - 18529
Published: Jan. 1, 2023
Recent
advances
in
two-dimensional
bifunctional
electrocatalysts
for
full
water
splitting
are
systematically
reviewed,
discussing
challenges
and
opportunities
further
research.
