Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: March 31, 2025
Exploring
active,
durable
catalysts
and
utilizing
external
renewable
energy
sources
offer
notable
opportunities
for
advancing
seawater
electrolysis.
Here,
a
multifunctional
NiMo-based
catalyst
(NiMo-H2)
composed
of
bimetallic
Ni0.91Mo0.09
nanoparticles
on
MoO2
nanorods
is
demonstrated
the
alkaline
hydrogen
evolution
reaction.
The
alloying
effect
nanorod-nanoparticle
structure
endow
this
with
high
structural
stability,
rapid
electron
transfer,
large
surface
area.
in
situ-generated
alloyed
have
light
absorption
photothermal
conversion
capabilities,
while
vertically
grown
suppress
diffuse
reflection,
enabling
efficient
localized
photoheating.
Consequently,
irradiation
boosts
catalyst's
activity
it
works
stably
at
current
density
500
mA
cm−2
seawater.
We
then
assemble
NiMo-H2||NiFe
LDH
pair
anion
exchange
membrane
electrolyzer,
requires
approximately
1.6
V
to
drive
0.45
A,
demonstrating
robust
durability
overall
This
photothermal-promoted
electrolysis
system
shows
potential
production
from
active
crucial
sustainable
production.
authors
report
strategy
designing
nickel-molybdenum
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
The
development
of
efficient
and
stable
electrocatalysts
for
the
hydrogen
evolution
reaction
(HER)
is
essential
realization
effective
production
via
seawater
electrolysis.
Herein,
study
has
developed
a
simple
method
that
combines
electrospinning
with
subsequent
thermal
shock
technology
to
effectively
disperse
ruthenium
nanoparticles
onto
highly
conductive
titanium
carbide
nanofibers
(Ru@TiC).
electronic
metal-support
interactions
(EMSI)
resulted
from
charge
redistribution
at
interface
between
Ru
TiC
support
can
optimize
desorption
kinetics
sites
induce
spillover
phenomenon,
thereby
improving
evolution.
As
result,
Ru@TiC
catalyst
exhibits
outstanding
HER
activity,
requiring
low
overpotentials
only
65
mV
in
alkaline
current
density
100
mA
cm-2.
Meanwhile,
demonstrates
excellent
stability,
maintaining
consistent
operation
500
cm-2
least
250
hours.
Additionally,
an
anion
exchange
membrane
electrolyzer
incorporating
operated
continuously
over
hours
200
seawater.
This
highlights
significant
potential
robust
supports
fabrication
enduring
enhance
complex
environments.
Energy Materials,
Journal Year:
2025,
Volume and Issue:
5(8)
Published: March 21, 2025
Seawater
electrolysis
offers
a
sustainable
solution
for
hydrogen
production
by
utilizing
ocean
water
as
an
electrolyte.
However,
the
chlorine
evolution
reaction
(ClER)
and
accumulation
of
magnesium
calcium
precipitates
pose
significant
challenges
to
efficiency
durability.
ClER
competes
with
oxygen
reaction,
reducing
output
accelerating
electrode
degradation,
while
precipitate
formation
on
cathode
blocks
catalytic
sites
impairs
long-term
performance.
Anion
exchange
membrane
electrolyzers
tackle
these
leveraging
alkaline
media
suppress
enhance
catalyst
stability.
Recent
advances
in
selective
catalysts,
protective
coatings,
alternative
oxidation
reactions
further
improve
selectivity
energy
efficiency.
Additionally,
strategies
such
surface
engineering
pH
modulation
mitigate
formation,
ensuring
stable
operation.
Scaling
innovations
into
anion
electrolyzer
systems
demonstrates
their
potential
industrial-level
production.
By
overcoming
fundamental
practical
barriers,
seawater
toward
commercial
deployment
future.
Angewandte Chemie,
Journal Year:
2024,
Volume and Issue:
136(47)
Published: Aug. 29, 2024
Abstract
Direct
electrochemical
seawater
splitting
is
a
renewable,
scalable,
and
potentially
economic
approach
for
green
hydrogen
production
in
environments
where
ultra‐pure
water
not
readily
available.
However,
issues
related
to
low
durability
caused
by
complex
ions
pose
great
challenges
its
industrialization.
In
this
review,
mechanistic
analysis
of
electrolytic
discussed.
We
critically
analyze
the
development
electrolysis
identify
at
both
anode
cathode.
Particular
emphasis
given
elucidating
rational
strategies
designing
electrocatalysts/electrodes/interfaces
with
long
lifetimes
realistic
including
inducing
passivating
anion
layers,
preferential
OH
−
adsorption,
employing
anti‐corrosion
materials,
fabricating
protective
immobilizing
Cl
on
surface
electrocatalysts,
tailoring
adsorption
sites,
inhibition
binding
Mg
2+
Ca
,
hydroxide
precipitation
adherence,
co‐electrosynthesis
nano‐sized
hydroxides.
Synthesis
methods
electrocatalysts/electrodes
innovations
electrolyzer
are
also
Furthermore,
prospects
developing
technologies
clean
generation
summarized.
found
that
researchers
have
rethought
role
ions,
as
well
more
attention
cathodic
reaction
electrolyzers,
which
conducive
accelerate
commercialization
electrolysis.
