Designing
an
affordable
catalyst
for
the
hydrogen
evolution
reaction
(HER)
in
alkaline
media
remains
a
major
challenge.
In
this
study,
we
synthesized
Ru-CoMoO4–x/NF
modified
with
ruthenium
nanoclusters
(Ru
NCs)
and
oxygen
vacancies
(Ovs),
using
nickel
foam
(NF)
as
substrate.
X-ray
photoelectron
spectroscopy
(XPS)
analysis
showed
that
introducing
Ru
effectively
catalyst's
electronic
structure.
A
carefully
controlled
concentration
of
enhanced
stability,
reduced
electrochemical
impedance,
promoted
kinetics,
thereby
improving
intrinsic
activity
Ru-CoMoO4–x/NF.
freshwater
medium,
displayed
low
overpotential
20
mV
to
achieve
current
density
−10
mA
cm–2,
Tafel
slope
41.54
dec–1.
The
maintained
stable
performance
minimal
degradation
after
100
h
constant
voltage
tests
180
multistep
tests.
Moreover,
overall
water-splitting
system,
Ru-CoMoO4–x/NF∥Ru-CoMoO4–x/NF
required
only
1.606
V
drive
−50
cm–2.
This
work
presents
viable
approach
enhancing
HER
electrocatalytic
nonprecious
metal
oxides
through
synergistic
effects
NCs
Ovs.
Langmuir,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 22, 2025
Electrocatalytic
water
splitting
is
a
clean
and
feasible
method
for
hydrogen
production,
expected
to
become
key
technology
meeting
energy
demands.
Transition
metal-based
nanoparticles,
including
single-atom
catalysts
their
compounds,
are
widely
used
in
electrocatalytic
splitting,
but
they
often
suffer
from
issues
like
easy
agglomeration
poor
conductivity.
The
integration
of
these
nanoparticles
with
three-dimensional
(3D)
graphene
enhances
conductivity
prevents
agglomeration,
while
improving
the
adsorption
desorption
rates
reactants
intermediates
on
catalyst
surface
during
thereby
boosting
efficiency.
This
paper
reviews
preparation
methods
graphene-based
supported
electrocatalysts
applications
oxygen
evolution
reactions
(OERs),
further
discussing
mechanism
by
which
3D
improves
OER
performance.
Advanced Energy and Sustainability Research,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 27, 2025
Metal–air
batteries,
such
as
zinc–air,
are
known
for
their
high
specific
capacity
and
environmental
friendliness.
Operational
longevity
energy
efficiency,
however,
remain
constrained
by
sluggish
reaction
kinetics,
elevated
overpotential,
interfacial
instability
during
charge–discharge
cycles.
While
noble
metal
catalysts
have
historically
addressed
these
gaps,
strategic
resource
allocation
now
prioritizes
abundant,
commercially
reachable,
cost‐effective
alternatives.
Biomass,
a
sustainable
resource,
is
crucial
in
the
development
of
metal‐free
heteroatom‐doped
biomass
carbon
nanostructured
electrocatalysts
porous
air
electrodes
with
excellent
performance
batteries.
These
novel
materials
emerge
critical
enablers,
leveraging
inherent
heteroatom
density,
tunable
pore
architectures,
potential
transition
doping
codoping
to
optimize
bifunctional
activity.
They
also
been
identified
prospective
alternatives
next
generation
oxygen
reduction
evolution
reactions.
This
review
provides
comprehensive
overview
forthcoming
generations
processes,
well
zinc–air
rechargeable
The
physicochemical
features
stabilization
techniques
zinc
electrodes,
dynamic
electrolyte–electrode
interface
conferred.
Hydrogen,
Journal Year:
2025,
Volume and Issue:
6(2), P. 22 - 22
Published: March 30, 2025
Efficient
hydrogen
storage
is
critical
for
advancing
hydrogen-based
technologies.
This
study
investigates
the
effects
of
pressure
and
surface
area
on
in
three
carbon-based
materials:
graphite,
graphene
oxide,
reduced
oxide.
Hydrogen
adsorption–desorption
experiments
under
pressures
ranging
from
1
to
9
bar
revealed
nonlinear
capacity
responses,
with
optimal
performance
at
around
5
bar.
The
specific
plays
a
pivotal
role,
oxide
exhibiting
70.31
m2/g,
outperforming
(33.75
m2/g)
graphite
(7.27
m2/g).
Reduced
achieved
highest
capacity,
768
sccm
3
wt.%
increase
over
other
materials.
In
assessing
proton-exchange
fuel
cell
performance,
this
found
that
increased
correlates
enhanced
power
density,
reaching
maximum
0.082
W/cm2,
compared
0.071
W/cm2
0.017
However,
desorption
rates
impose
temporal
constraints
operation.
These
findings
enhance
our
understanding
pressure–surface
interactions
underscore
balance
between
area,
practical
materials,
offering
valuable
insights
applications.
Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 29, 2024
Abstract
Heteroatom
doping
can
change
the
chemical
environment
of
carbon‐based
nanomaterials
and
improve
their
catalytic
performance.
Exploring
structure‐catalytic
activity
relationship
heteroatom‐doped
materials
is
great
significance
for
studying
mechanisms
designing
highly
efficient
catalysts,
but
remains
a
significant
challenge.
Recently,
reactive
oxygen
species
(ROS)‐triggered
electrochemiluminescence
(ECL)
has
shown
potential
unveiling
mechanism
by
which
catalyze
reduction
reaction
(ORR),
owing
to
high
sensitivity
these
properties
electrode
surface.
Herein,
two
kinds
porous
carbon
(denoted
as
NP‐C
N‐C)
are
synthesized
analyzed
monitoring
cathodic
ECL
luminol‐H
2
O
in
low
negative‐potential
region.
P,
N‐doped
exhibits
better
ability
activating
H
generate
large
amounts
•OH
•−
,
compared
with
N‐C.
A
sensitive
antioxidant‐mediated
platform
successfully
developed
detecting
antioxidant
levels
cells,
exhibiting
considerable
evaluating
capacity.
The
between
structure
explored
using
ECL,
where
this
method
be
universally
applied
materials.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 23, 2024
Abstract
Organic
small
molecules
(OSMs)
with
well‐defined
structures
are
crucial
integral
components
of
cathode
catalysts
for
fuel
cells.
Despite
the
acknowledged
potential
heteroatom
doping
to
enhance
catalytic
performance
metal‐free
carbon‐based
catalysts,
there
exists
a
notable
gap
in
conducting
molecular
structure
and
activity,
particularly
under
premise
maintaining
constant
skeleton
clear
structure.
Herein,
charge
distribution
is
modulated
by
introducing
different
chalcogens
into
same
through
main‐group
engineering.
Among
these
OSMs,
Se‐containing
molecule
OSM‐Se
combined
carbonized
calcium
alginate
exhibits
quasi‐four‐electron‐transfer
oxygen
reduction
reaction
pathway,
displaying
superior
half‐wave
(
E
1/2
)
0.73
V,
accompanied
outstanding
electrochemical
stability.
Density
functional
theory
calculations
demonstrate
that
can
capabilities
adsorbing
dissociating
molecules,
contribute
reducing
barrier
reaction.
This
study
presents
straightforward
yet
highly
effective
approach
OSM
electrocatalysts.
Designing
an
affordable
catalyst
for
the
hydrogen
evolution
reaction
(HER)
in
alkaline
media
remains
a
major
challenge.
In
this
study,
we
synthesized
Ru-CoMoO4–x/NF
modified
with
ruthenium
nanoclusters
(Ru
NCs)
and
oxygen
vacancies
(Ovs),
using
nickel
foam
(NF)
as
substrate.
X-ray
photoelectron
spectroscopy
(XPS)
analysis
showed
that
introducing
Ru
effectively
catalyst's
electronic
structure.
A
carefully
controlled
concentration
of
enhanced
stability,
reduced
electrochemical
impedance,
promoted
kinetics,
thereby
improving
intrinsic
activity
Ru-CoMoO4–x/NF.
freshwater
medium,
displayed
low
overpotential
20
mV
to
achieve
current
density
−10
mA
cm–2,
Tafel
slope
41.54
dec–1.
The
maintained
stable
performance
minimal
degradation
after
100
h
constant
voltage
tests
180
multistep
tests.
Moreover,
overall
water-splitting
system,
Ru-CoMoO4–x/NF∥Ru-CoMoO4–x/NF
required
only
1.606
V
drive
−50
cm–2.
This
work
presents
viable
approach
enhancing
HER
electrocatalytic
nonprecious
metal
oxides
through
synergistic
effects
NCs
Ovs.
