Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 25, 2024
Developing
low-cost
and
highly
active
oxygen
evolution
reaction
(OER)
electrocatalysts
using
earth-abundant
elements
through
simple
efficient
synthesis
methods
holds
paramount
importance
for
sustainable
hydrogen
production
via
water
electrolysis.
Porous
catalyst
materials
have
proven
versatile
in
heterogeneous
catalysis
due
to
their
high
surface
area
fast
mass
diffusion.
Herein,
we
developed
a
approach
synthesizing
high-surface-area,
porous
Co3O4
nanomaterials
from
perovskite
materials,
i.e.,
SrCoO3
LaCoO3.
The
resulting
exhibit
exceptional
efficiency
the
oxidation
reaction.
Notably,
acid-treated
sample
(AT-SCO-1M)
demonstrated
superior
photochemical
electrochemical
activities.
It
exhibits
turnover
frequency
(TOF)
of
8.13
×
10–3
s–1,
along
with
lower
overpotential
(375
mV)
Tafel
slope
(117
mV/dec)
compared
untreated
Cg-Co3O4
nanoparticles
(4.28
465
mV,
220
mV/dec).
This
method's
selective
removal
A-site
cations
precursors
increases
area,
porosity,
hydrophilicity,
all
collectively
contributing
improved
activity.
Our
simple,
environmental,
recyclable
method
shows
new
way
design
catalysts
other
catalytic
applications.
Materials Horizons,
Journal Year:
2025,
Volume and Issue:
12(6), P. 1757 - 1795
Published: Jan. 1, 2025
Noble
metal-based
oxide
electrocatalysts
are
essential
for
the
development
of
H
2
production
technology
by
water
electrolysis,
and
this
review
summarises
recent
research
progress
noble
metal
oxides
in
field
electrolysis.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 6, 2024
Abstract
Rational
construction
of
platinum
(Pt)‐based
single‐atom
catalysts
(SACs)
with
high
utilization
active
sites
holds
promise
to
achieve
superior
electrocatalytic
alkaline
HER
performance,
which
requires
the
assistance
functional
supports.
In
this
work,
a
novel
catalytic
configuration
is
reported,
namely,
Pt
SACs
anchored
on
nickel‐chromium
oxides
labeled
as
SACs‐NiCrO
3
/NF.
The
mechanism
associated
metal‐support
interaction
(MSI)
for
synergy
co‐catalysis
that
empowers
efficient
/NF
clarified.
Specifically,
modulated
electron
structure
in
manipulates
interface
microenvironment,
mediating
more
free
water
state,
beneficial
accelerate
front
dissociation
behavior
oxide
support.
Besides,
homogeneously
distributed
created
near‐acidic
state
ensure
subsequent
fast
proton‐involved
reaction.
All
these
determine
comprehensively
accelerating
kinetics.
Consequently,
deliverers
considerable
overpotentials
(η
10
/η
100
)
23/122
mV,
mass
activity
382.77
mA
mg
−1
.
When
serving
an
water‐based
anion
exchange
membrane
electrolytic
cell
(AEMWE),
also
presents
excellent
performance
(100
cm
−2
at
voltage
1.51
V
and
stable
up
h),
confirming
its
good
prospect.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 2, 2025
Abstract
Single‐atom
catalysts
(SACs)
show
great
promise
for
electrocatalytic
water
splitting
due
to
their
exceptional
metal
atom
utilization
efficiency.
Herein,
it
is
demonstrated
that
Ru
single
atoms
(SAs)
anchored
on
Co
3
O
4
nanorod
arrays
(Ru
x
‐Co
,
where
the
loading
in
weight
percent)
afford
outstanding
performance
and
durability
oxygen
evolution
reaction
(OER),
hydrogen
(HER),
overall
across
a
wide
pH
range
(0.3–14).
8%
achieves
10
mA
cm⁻
2
at
overpotentials
of
only
214,
286,
138
mV
OER,
13,
72,
59
HER,
1
m
KOH,
0.1
PBS,
0.5
H
SO
respectively,
outperforming
benchmark
RuO
Pt/C
catalysts.
When
utilized
as
anode
cathode
an
anion
exchange
membrane
electrolyzer
(AEMWE),
cell
voltage
2.06
V
required
achieve
A
.
Chronopotentiometry
verified
possesses
excellent
stability
during
both
OER
HER
100
acidic,
neutral,
alkaline
media.
Density
functional
theory
(DFT)
calculations
reveal
abundant
Ru‐O‐Co
interfaces
shift
d‐band
center
from
−1.72
eV
(for
cluster/Co
)
−1.58
SA/Co
),
creating
more
energetically
favorable
pathways
HER.
Advanced Materials Technologies,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 3, 2025
Abstract
Development
of
alternative
electrocatalysts
with
high
efficiency
and
stable
operation
at
current
density
(HCD)
put
a
challenge
for
industrial‐level
green‐hydrogen
production.
Herein,
tungsten
doping
is
systematically
demonstrated
on
nickel‐boron‐phosphide
(W/NiBP)
microsphere
electrode
(ME)
by
an
electrodeposition
approach
generation.
The
W/NiBP
ME
exhibits
low
hydrogen
evolution
reaction
(HER)
oxygen
(OER)
overpotentials
80
330
mV
100
mA
cm
−2
in
1
m
KOH,
respectively,
outperforming
the
benchmark
Pt/C
RuO
2.
bi‐functional
demonstrates
remarkably
voltage
1.85
V
500
KOH
overall
water
splitting
(OWS),
exceeding
most
state‐of‐the‐art
electrocatalysts.
Moreover,
ultra‐low
cell
2.50
under
harsh
industrial
conditions
2,000
6
60
°C
steady
1,000
over
200
h,
which
superior
to
reported
HCD.
A
small
amount
W
incorporation
can
significantly
accelerate
catalytic
activity
NiBP
microspheres
increased
electrochemical
surface
area,
optimized
adsorption‐desorption
kinetics
intermediates,
intrinsic
activity,
corrosion
resistance.
