Abstract
The
generation
of
green
hydrogen
by
water
splitting
is
identified
as
a
key
strategic
energy
technology,
and
proton
exchange
membrane
electrolysis
(PEMWE)
one
the
desirable
technologies
for
converting
renewable
sources
into
hydrogen.
However,
harsh
anode
environment
PEMWE
oxygen
evolution
reaction
(OER)
involving
four‐electron
transfer
result
in
large
overpotential,
which
limits
overall
efficiency
production,
thus
efficient
electrocatalysts
are
needed
to
overcome
high
overpotential
slow
kinetic
process.
In
recent
years,
noble
metal‐based
(e.g.,
Ru/Ir‐based
metal/oxide
electrocatalysts)
have
received
much
attention
due
their
unique
catalytic
properties,
already
become
dominant
acidic
OER
process
applied
commercial
devices.
these
still
face
thorny
problem
conflicting
performance
cost.
this
review,
first,
metal
briefly
classified
according
forms
existence,
mechanisms
outlined.
Then,
focus
on
summarizing
improvement
strategies
with
respect
activity
stability
over
years.
Finally,
challenges
development
prospects
discussed.
Manipulating
catalytic
active
sites
and
reaction
kinetics
in
alkaline
media
is
crucial
for
rationally
designing
mighty
water-splitting
electrocatalysts
with
high
efficiency.
Herein,
the
coupling
between
oxygen
vacancies
interface
engineering
highlighted
to
fabricate
a
novel
amorphous/crystalline
CrOx
-Ni3
N
heterostructure
grown
on
Ni
foam
accelerating
hydrogen
evolution
(HER)
(OER).
Density
functional
theory
(DFT)
calculations
reveal
that
electron
transfer
from
amorphous
Ni3
at
interfaces,
optimized
Gibbs
free
energies
of
H2
O
dissociation
(ΔGH-OH
)
H
adsorption
(ΔGH
are
conducive
superior
stable
HER
activity.
Experimental
data
confirm
numerous
interfaces
catalysts
favorable
abundant
accessible
enhanced
intrinsic
activity,
resulting
excellent
performances
OER.
Additionally,
situ
reconstruction
into
highly
N/Ni(OH)2
responsible
OER
performance
long-term
stability
test.
Eventually,
an
electrolyzer
using
as
both
cathode
anode
has
low
cell
voltage
1.53
V
10
mA
cm-2
,
together
extraordinary
durability
500
h,
revealing
its
potential
industrial
applications.
Journal of Materials Chemistry A,
Год журнала:
2022,
Номер
10(17), С. 9308 - 9326
Опубликована: Янв. 1, 2022
Hetero-structured
Ni-based
active
catalysts
for
urea
electrolysis
were
reviewed,
and
challenges
faced
the
integration
of
components
to
fully
make
use
their
strengths
up
each
other's
weaknesses.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(11), С. 5476 - 5494
Опубликована: Янв. 1, 2023
The
oxygen
evolution
reaction
(OER),
as
an
essential
process
in
water
decomposition
and
air
batteries,
has
received
increasing
attention
the
context
of
clean
energy
production
efficient
storage.
Designing
robust
electrocatalysts
for
water-splitting
is
essential
sustainable
hydrogen
generation,
yet
difficult
to
accomplish.
In
this
study,
a
fast
and
facile
two-step
technique
synthesize
Ru/RuO2
aerogels
catalyzing
overall
under
alkaline
conditions
reported.
Benefiting
from
the
synergistic
combination
of
high
porosity,
heterointerface,
tensile
strain
effects,
aerogel
exhibits
low
overpotential
oxygen
evolution
reaction
(189
mV)
(34
at
10
mA
cm-2
,
surpassing
RuO2
(338
Pt/C
(53
mV),
respectively.
Notably,
when
are
applied
anode
cathode,
resultant
cell
reflected
potential
1.47
V
exceeding
commercial
Pt/C||RuO2
standard
(1.63
V).
X-ray
adsorption
spectroscopy
theoretical
studies
demonstrate
that
heterointerface
optimizes
charge
redistribution,
which
reduces
energy
barriers
intermediates,
thereby
enhancing
kinetics.
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(14)
Опубликована: Янв. 17, 2023
Abstract
Electrocatalytic
5‐hydroxymethylfurfural
oxidation
reaction
(HMFOR)
can
replace
the
kinetically
slow
oxygen
evolution
to
yield
high
value‐added
chemicals.
In
this
study,
interface
engineering
is
constructed
by
modifying
CeO
2
nanoparticles
on
Co
3
O
4
nanowires
supported
nickel
foam
(NF).
The
construction
of
heterointerface
facilitate
structural
catalysts
and
charge
transfer,
as
a
result,
successfully
synthesized
NF@Co
/CeO
exhibits
higher
conversion
(98.0%),
2,5‐furandicarboxylic
acid
(FDCA)
(94.5%),
Faradaic
efficiency
(97.5%)
at
low
electrolysis
potential
1.40
V
RHE
compared
NF@CeO
.
Density‐functional
theory
calculations
indicate
that
establishment
effectively
regulate
intermediate
adsorption
promote
electron
which
greatly
reduces
activation
energy
dehydrogenation
step
in
5‐formyl‐2‐furancarboxylic
(FFCA),
promotes
further
FFCA
FDCA,
thereby
improving
performance
HMFOR.
HMFOR
behavior
effect
deeply
explored,
provides
guidance
for
future
design
with
efficient
performance.
Journal of the American Chemical Society,
Год журнала:
2022,
Номер
144(20), С. 9033 - 9043
Опубликована: Апрель 29, 2022
Despite
the
Pt-catalyzed
alkaline
hydrogen
evolution
reaction
(HER)
progressing
via
oxophilic
metal-hydroxide
surface
hybridization,
maximizing
Pt
reactivity
alongside
operational
stability
is
still
unsatisfactory
due
to
lack
of
well-designed
and
optimized
interface
structures.
Producing
atomically
flat
two-dimensional
nanodendrites
(2D-PtNDs)
through
our
2D
nanospace-confined
synthesis
strategy,
this
study
tackles
insufficient
interfacial
contact
effect
during
HER
catalysis
by
realizing
an
area-maximized
firmly
bound
lateral
heterointerface
with
NiFe-layered
double
hydroxide
(LDH).
The
well-oriented
{110}
crystal
exposure
promotes
electronic
interplay
that
bestows
strong
LDH
binding.
charge-relocated
bond
in
2D-PtND/LDH
accelerates
generation
steps
achieves
nearly
highest
reported
mass
activity
enhancement
(∼11.2
times
greater
than
20
wt
%
Pt/C)
significantly
improved
long-term
stability.
This
work
uncovers
importance
shape
facet
create
heterointerfaces
provide
catalytic
synergy
for
efficient
production.
