Materials,
Journal Year:
2024,
Volume and Issue:
18(1), P. 121 - 121
Published: Dec. 31, 2024
The
development
of
efficient
catalysts
for
water
electrolysis
is
crucial
advancing
the
low-carbon
transition
and
addressing
energy
crisis.
This
work
involves
fabrication
graphene-based
oxygen
evolution
reaction
(OER)
by
integrating
NiFe-LDH
PbO
Molecules,
Journal Year:
2025,
Volume and Issue:
30(2), P. 208 - 208
Published: Jan. 7, 2025
Mixed-metal
nickel-iron,
NixFe
materials
draw
attention
as
affordable
earth-abundant
electrocatalysts
for
the
oxygen
evolution
reaction
(OER).
Here,
nickel
and
mixed-metal
nickel-iron
metal-organic
framework
(MOF)
composites
with
carbon
ketjenblack
(KB)
or
nanotubes
(CNT)
were
synthesized
in
situ
a
one-pot
solvothermal
reaction.
As
direct
comparison
to
these
composites,
neat
MOFs
postsynthetically
mixed
by
grinding
KB
CNT,
generate
physical
mixture
composites.
The
postsynthetic
MOF/carbon
samples
comparatively
tested
(pre-)catalysts
OER,
most
of
them
outperformed
RuO2
benchmark.
Depending
on
material
metal
ratio,
performed
better,
showing
that
method
composite
can
influence
OER
activity.
best
Ni5Fe-CNT
was
achieved
an
overpotential
(η)
301
mV
(RuO2η
=
354
mV),
Tafel
slope
(b)
58
mV/dec
(RuO2b
91
mV/dec),
charge
transfer
resistance
(Rct)
7
Ω
(RuO2
Rct
39
Ω),
faradaic
efficiency
(FE)
95%
FE
91%).
Structural
changes
could
be
seen
through
stability
test
alkaline
electrolyte,
chronopotentiometry
over
12
h
showed
derived
have
good
stability.
New Journal of Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
growing
demand
for
electrocatalysts
with
excellent
electrochemical
properties
and
environment
friendly
characteristics
is
driving
research
on
water-splitting
to
generate
sustainable
hydrogen
energy
resources.
Advanced Sustainable Systems,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 17, 2025
Abstract
Despite
significant
advancements
in
noble
metal‐free
trimetallic
MOF‐based
electrocatalysts
for
efficient
oxygen
evolution
reaction
(OER),
limited
attention
is
given
to
identify
which
metal
will
play
most
role
controlling
OER
performance.
Thus,
address
this
gap,
herein
ternary
metallic
(FeCoMn)
squarate‐based
MOF
via
a
solvothermal
approach
synthesized.
Additionally,
machine
learning
(ML)
algorithms
are
employed
on
experimental
datasets
during
synthesis
strategy
optimize
concentrations
more
swiftly
and
efficiently
design
highly
squarate
electrocatalysts.
Interestingly,
ML
optimization
has
identified
Fe
as
key
element
significantly
influencing
efficacy.
To
further
boost
efficacy,
ML‐optimized
FeCoMn
drop‐casted
onto
conductive
electrospun
polycaprolactone
(PC)
nanofibers,
facilitating
smooth,
uniform
flow
of
ions
electrons
across
the
entire
surface,
maximizing
exposed
active
sites,
all
anchored
sponge‐like
Ni
foam
(NF)
substrate.
Results
reveal
that
FeCoMn/PC
displays
high
electrocatalytic
activity
with
lower
overpotential
(170
mV
at
current
density
10
mA
cm
−2
),
Tafel
slope
66.6.8
dec
−1
,
compared
(overpotential
180
mV,
89.3
).
best
knowledge,
first
time
optimized
FeCoMn/PC‐based
electrocatalyst
reported.
ChemElectroChem,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 20, 2025
Abstract
Given
the
rising
global
energy
demand
and
increasing
emphasis
on
environmental
protection,
development
of
renewable
conversion
technologies
to
replace
fossil
fuels
has
emerged
as
a
critical
research
priority.
Among
these
technologies,
seawater
electrocatalysis
garnered
attention
high‐efficiency
environmentally
friendly
approach.
This
review
summarizes
recent
advancements
in
for
resource
extraction,
covering
reaction
mechanisms
hydrogen
production
via
electrolysis
progress
electrocatalytic
materials.
Specifically,
we
discuss
materials
based
non‐precious
metals,
precious
nonmetals,
bifunctional
electrocatalysts.
Additionally,
inorganic
pollutants
(e.
g.,
hydrazine,
sulfides)
organic
compounds
urea,
microplastics)
is
reviewed,
emphasizing
its
significance
marine
utilization
remediation.
We
also
explore
electrochemical
strategies
extracting
valuable
metal
ions,
such
calcium,
magnesium,
uranium,
lithium,
abundant
seawater.
Although
faces
challenges
terms
cost
technical
scalability,
technology
interdisciplinary
collaboration
offer
promising
prospects
commercialization
with
potential
make
substantial
contributions
sustainable
development.