Advanced Energy Materials,
Год журнала:
2024,
Номер
14(45)
Опубликована: Окт. 28, 2024
Abstract
High‐current‐density
water
electrolysis
is
considered
a
promising
technology
for
industrial‐scale
green
hydrogen
production,
which
of
significant
value
to
energy
decarbonization
and
numerous
sustainable
industrial
applications.
To
date,
substantial
research
advancements
are
achieved
in
catalyst
design
laboratory‐based
electrolysis.
While
the
designed
catalysts
demonstrate
remarkable
performance
at
low
current
densities,
they
suffer
from
marked
deteriorations
both
activity
long‐term
stability
under
industrial‐level
high‐current‐density
operations.
provide
timely
assessment
that
helps
bridge
gap
between
laboratory‐scale
fundamental
practical
technology,
here
various
commercial
electrolyzers
first
systematically
analyzed,
then
key
parameters
including
work
temperature,
density,
lifetime
stacks,
cell
efficiency,
capital
cost
stacks
critically
evaluated.
In
addition,
impact
high
density
on
electrocatalytic
behavior
catalysts,
intrinsic
activity,
stability,
mass
transfer,
discussed
advance
design.
Therefore,
by
covering
range
critical
issues
material
principles
parameters,
future
directions
development
highly
efficient
low‐cost
presented
procedure
screening
laboratory‐designed
outlined.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(24)
Опубликована: Янв. 7, 2024
Abstract
Resourceful
and
inexpensive
seawater
direct
splitting
omits
the
desalination
process
effectively
increases
efficiency
of
hydrogen
energy
generation.
However,
development
is
hampered
by
competing
selectivity
challenges
from
anodic
oxygen
evolution
reaction
(OER)
chlorine
issues
electrode
corrosion.
Herein,
borate
anion‐intercalated
NiV‐LDH
nanoflakes/NiCoP
nanowires
heterostructures
supported
on
Ni
foam
(2D/1D
NiV‐BLDH/NiCoP/NF)
synthesized.
Theoretical
calculations
show
that
a
small
amount
V
atom
doping
in
Ni(OH)
2
favorable
for
changing
electronic
environment
around
atoms
via
bridging
Ni─O,
which
can
construct
Ni─O─V
to
accelerate
electron
transfer
promote
catalytic
activity.
The
anions
(B(OH)
4
−
)
intercalation
not
only
results
good
hydrophilicity
high
OH
but
also
weakens
adsorption
(Cl
),
restrains
reaction.
Thus,
component
optimized
NiV
0.1
‐BLDH/NiCoP/NF
electrocatalyst
requires
268
mV
overpotential
reach
100
mA
cm
−2
OER
an
alkaline
environment.
Particularly,
NiCoP/NF||NiV
cell
exhibits
attractive
overall
water
performance
with
low
voltage
1.46
1.53
at
10
freshwater
seawater,
respectively.
design
strategy
this
provides
new
avenue
splitting.
Nano Letters,
Год журнала:
2024,
Номер
24(3), С. 1015 - 1023
Опубликована: Янв. 12, 2024
Ru-related
catalysts
have
shown
excellent
performance
for
the
hydrogen
evolution
reaction
(HER)
and
oxidation
(HOR);
however,
a
deep
understanding
of
Ru-active
sites
on
nanoscale
heterogeneous
support
catalysis
is
still
lacking.
Herein,
click
chemistry
strategy
proposed
to
design
Ru
cluster-decorated
nanometer
RuxFe3–xO4
heterointerfaces
(Ru/RuxFe3–xO4)
as
highly
effective
bifunctional
catalysts.
It
found
that
introducing
into
nanometric
Fe3O4
species
breaks
symmetry
configuration
optimizes
active
site
in
Ru/RuxFe3–xO4
HER
HOR.
As
expected,
catalyst
displays
prominent
alkaline
HOR
with
mass
activity
much
higher
than
commercial
Pt/C
well
robust
stability
during
because
strong
interaction
between
cluster
support,
optimized
adsorption
intermediate
(Had
OHad).
This
work
sheds
light
promsing
approach
improving
electrocatalysis
by
breaking
atomic
dimension
symmetry.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(16)
Опубликована: Фев. 14, 2024
Abstract
The
alkaline
water
electrolyzer
(AWE)
is
the
earliest
and
most
mature
water‐splitting
technology.
However,
conventional
Raney
Ni
electrocatalysts
dominantly
used
in
AWEs
are
struggling
to
meet
current
demands
for
higher
energy
efficiency
cost‐effectiveness
green
hydrogen
production.
Although
many
promising
electrocatalytic
materials
have
been
developed
using
facile
preparation
methods
laboratory,
they
not
received
much
attention
commercial
AWE
applications.
It
due
academic
negligence
on
specific
operational
conditions,
critical
performance
metrics,
material
costs
associated
with
industrial
AWEs,
as
well
disregarding
impact
of
large‐scale
electrode
manufacturing
processes
catalytic
performance.
Therefore,
a
timely
review
bridge
laboratory
focus
requirements
essential
guide
future
development
electrocatalysts.
Here,
starting
from
differences
operating
testing
conditions
between
systems,
gaps
equipment,
evaluation
methods,
principles
electrodes
outlined.
To
narrow
these
gaps,
some
efforts
advancing
industrially
relevant
highlighted
personal
perspectives
opportunities,
research
focus,
challenges
this
field
provided.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(37)
Опубликована: Апрель 21, 2024
Abstract
Electrocatalytic
hydrogen
evolution
reaction
(HER)
via
alkaline
water
splitting
holds
great
promise
for
industrial
clean
production
but
is
frustrated
by
limited
catalytic
activity
and
inferior
stability
under
high
current
density.
Elaborate
manipulating
of
heterostructure
on
robust
electrodes
essential
challenging
accelerating
HER
kinetics
with
durability.
Herein,
a
nickel
mesh
electrode,
offering
mechanical
stability,
directly
engineered
layers
multiple
heterostructures
(r‐Mn–Ni/CoP)
facile
one‐pot
electrodeposition
followed
surface
reconstruction
strategy.
The
abundant
composed
crystalline
CoP,
NiP,
amorphous
region,
additional
Mn
doping
considerably
manipulate
the
electronic
structure
optimized
charge
transfer;
while
in
situ
surface‐reconstructed
hydrophilic
nanoflakes
enable
rapid
wetting
active
sites
to
electrolyte.
Consequently,
r‐Mn–Ni/CoP
requires
only
134
mV
overpotential
at
density
100
mA
cm
−2
,
superior
monophasic
undoped
samples,
majority
reported
catalysts.
Remarkably,
an
electrolyzer
cathode
demonstrates
extraordinary
voltage
1.734
V
300
stable
operation
800
h.
finding
provides
feasible
strategy
fabrication
nonprecious‐metal‐based
electrocatalysts
toward
electrolysis.
ACS Nano,
Год журнала:
2024,
Номер
18(4), С. 3791 - 3800
Опубликована: Янв. 16, 2024
The
design
and
synthesis
of
efficient,
inexpensive,
long-term
stable
heterostructured
electrocatalysts
with
high-density
dislocations
for
hydrogen
evolution
reaction
in
alkaline
media
seawater
are
still
a
great
challenge.
An
amorphous/crystalline/amorphous
sandwiched
structure
abundant
were
synthesized
through
thermal
phosphidation
strategies.
play
an
important
role
the
reactions.
Copious
dislocation
defects,
combined
cracks,
synergistic
interfacial
effect
between
crystalline
phase
amorphous
regulate
electronic
electrocatalyst,
provide
more
active
sites,
thus
endow
excellent
catalytic
activity
under
water
seawater.
overpotentials
P–NiMoO4
at
10
mA/cm2
1
M
KOH
aqueous
solution
45
75
mV,
respectively.
Additionally,
electrocatalyst
exhibits
stability
over
100
h.
This
study
provides
simple
approach
synthesizing
non-noble-metal
reaction.
Green Chemistry,
Год журнала:
2024,
Номер
26(7), С. 4209 - 4220
Опубликована: Янв. 1, 2024
A
Fe-doped
Ni
2
P-Co
P-Zn
3
P
heterogeneous
electrocatalyst
with
a
nanoneedle-assembled
nanosphere
structure
and
abundant
defects
was
fabricated
on
foam
(Fe-NiCoZnP/NF).
Fe-NiCoZnP/NF
shows
enhanced
electrocatalytic
activity
stability
for
HER
HzOR.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(20)
Опубликована: Фев. 27, 2024
Density
functional
theory
(DFT)
calculations
demonstrate
neighboring
Pt
atoms
can
enhance
the
metal
activity
of
NiCoP
for
hydrogen
evolution
reaction
(HER).
However,
it
remains
a
great
challenge
to
link
and
NiCoP.
Herein,
we
introduced
curvature
bowl-like
structure
construct
Pt/NiCoP
interface
by
adding
minimal
1
‰-molar-ratio
Pt.
The
as-prepared
sample
only
requires
an
overpotential
26.5
181.6
mV
accordingly
achieve
current
density
10
500
mA
cm
