Advanced Materials,
Год журнала:
2024,
Номер
36(49)
Опубликована: Окт. 25, 2024
Abstract
Direct
seawater
electrolysis
is
emerging
as
a
promising
renewable
energy
technology
for
large‐scale
hydrogen
generation.
The
development
of
Os‐Ni
4
Mo/MoO
2
micropillar
arrays
with
strong
metal‐support
interaction
(MSI)
bifunctional
electrocatalyst
reported.
structure
enhances
electron
and
mass
transfer,
extending
catalytic
reaction
steps
improving
efficiency.
Theoretical
experimental
studies
demonstrate
that
the
MSI
between
Os
Ni
optimizes
surface
electronic
catalyst,
reducing
barrier
thereby
activity.
Importantly,
first
time,
dual
Cl
−
repelling
layer
constructed
by
electrostatic
force
to
safeguard
active
sites
against
attack
during
oxidation.
This
includes
Os─Cl
adsorption
an
in
situ‐formed
MoO
2−
layer.
As
result,
catalyst
exhibits
ultralow
overpotential
113
336
mV
reach
500
mA
cm
−2
HER
OER
natural
from
South
China
Sea
(without
purification,
1
m
KOH
added).
Notably,
it
demonstrates
superior
stability,
degrading
only
0.37
µV
h
−1
after
2500
oxidation,
significantly
surpassing
technical
target
1.0
set
United
States
Department
Energy.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Апрель 5, 2024
Abstract
Seawater
electroreduction
is
attractive
for
future
H
2
production
and
intermittent
energy
storage,
which
has
been
hindered
by
aggressive
Mg
2+
/Ca
precipitation
at
cathodes
consequent
poor
stability.
Here
we
present
a
vital
microscopic
bubble/precipitate
traffic
system
(MBPTS)
constructing
honeycomb-type
3D
robust
anti-precipitation
seawater
reduction
(SR),
massively/uniformly
release
small-sized
bubbles
to
almost
every
corner
of
the
cathode
repel
precipitates
without
break.
Noticeably,
optimal
with
built-in
MBPTS
not
only
enables
state-of-the-art
alkaline
SR
performance
(1000-h
stable
operation
–1
A
cm
−2
)
but
also
highly
specialized
in
catalytically
splitting
natural
into
greatest
ability.
Low
amounts
after
prolonged
tests
under
large
current
densities
reflect
genuine
efficacy
our
MBPTS.
Additionally,
flow-type
electrolyzer
based
on
stably
functions
industrially-relevant
500
mA
150
h
while
unwaveringly
sustaining
near-100%
Faradic
efficiency.
Note
that
estimated
price
(~1.8
US$/kg
H2
even
cheaper
than
US
Department
Energy’s
goal
(2
).
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(5), С. 2680 - 2684
Опубликована: Янв. 1, 2024
Three-dimensional
porous
NiCoP
foam
supported
on
Ni
is
a
superb
bifunctional
electrocatalyst
for
overall
seawater
splitting,
attaining
large
current
density
of
1000
mA
cm
−2
at
low
cell
voltage
1.97
V
with
robust
stability
over
300
hours.
Abstract
Renewable
electricity‐driven
seawater
splitting
presents
a
green,
effective,
and
promising
strategy
for
building
hydrogen
(H
2
)‐based
energy
systems
(e.g.,
storing
wind
power
as
H
),
especially
in
many
coastal
cities.
The
abundance
of
Cl
−
seawater,
however,
will
cause
severe
corrosion
anode
catalyst
during
the
electrolysis,
thus
affect
long‐term
stability
catalyst.
Herein,
oxidation
performances
NiFe
layered
double
hydroxides
(LDH),
classic
oxygen
(O
)
evolution
material,
can
be
boosted
by
employing
tungstate
(WO
4
2–
intercalated
guest.
Notably,
insertion
WO
2−
to
LDH
layers
upgrades
reaction
kinetics
selectivity,
attaining
higher
current
densities
with
≈100%
O
generation
efficiency
alkaline
seawater.
Moreover,
after
350
h
test
at
1000
mA
cm
−2
,
only
trace
active
chlorine
detected
electrolyte.
Additionally,
follows
lattice
mechanism
on
.
Advanced Materials,
Год журнала:
2024,
Номер
36(37)
Опубликована: Фев. 1, 2024
Abstract
Seawater
electrolysis
for
hydrogen
production
is
a
sustainable
and
economical
approach
that
can
mitigate
the
energy
crisis
global
warming
issues.
Although
various
catalysts/electrodes
with
excellent
activities
have
been
developed
high‐efficiency
seawater
electrolysis,
their
unsatisfactory
durability,
especially
anodes,
severely
impedes
industrial
applications.
In
this
review,
attention
paid
to
factors
affect
stability
of
anodes
corresponding
strategies
designing
catalytic
materials
prolong
anode's
lifetime.
addition,
two
important
aspects—electrolyte
optimization
electrolyzer
design—with
respect
anode
improvement
are
summarized.
Furthermore,
several
methods
rapid
assessment
proposed
fast
screening
both
highly
active
stable
catalysts/electrodes.
Finally,
perspectives
on
future
investigations
aimed
at
improving
systems
outlined.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(19), С. 6897 - 6942
Опубликована: Янв. 1, 2024
This
review
focuses
on
the
latest
developments
in
direct
seawater
electrolysis,
specifically
electrocatalysts,
hybrid
anodic
oxidation,
and
electrolyzers,
providing
a
glimpse
into
future
of
environmentally
friendly
hydrogen
generation.
