Molecules,
Journal Year:
2025,
Volume and Issue:
30(1), P. 177 - 177
Published: Jan. 4, 2025
Water
electrolysis
is
a
promising
path
to
the
industrialization
development
of
hydrogen
energy.
The
exploitation
high-efficiency
and
inexpensive
catalysts
become
important
mass
use
water
decomposition.
Ni-based
nanomaterials
have
exhibited
great
potential
for
catalysis
splitting,
which
attracted
attention
researchers
around
world.
Here,
we
prepared
novel
Mo-doped
NiFe-based
layered
double
hydroxide
(LDH)
with
nanoarray
microstructure
on
Ni
foam.
doping
amount
Mo
can
significantly
change
electrocatalysis,
will
further
affect
oxygen
evolution
reaction
(OER)
performance
splitting.
This
nanomaterial
required
only
an
overpotential
227
mV
10
mA
cm−2
Tafel
slope
54.8
mV/dec
in
1
M
KOH.
Meanwhile,
there
was
no
Mo,
NiFe-LDH
needed
233
attain
cm−2.
Compared
without
NiFeMo-LDH
nanosheet
arrays
enhanced
activities
17.1
less
OER.
good
electrocatalyst
ascribed
special
heterostructure
Ni-Fe-Mo
system.
These
features
help
increase
active
surface,
enhancing
efficient
charge
transfer
reactive
activity
Hydrogen,
Journal Year:
2023,
Volume and Issue:
4(4), P. 776 - 806
Published: Oct. 13, 2023
Amid
global
energy
challenges,
the
hydrogen
evolution
reaction
(HER)
is
gaining
traction
for
green
production.
While
catalyst
research
ongoing,
recognizing
electrolyte
effects
remains
crucial
sustainable
production
via
renewable-powered
water
electrolysis.
This
review
delves
into
intricate
of
electrolytes
on
kinetics
HER.
It
examines
key
factors
including
pH,
cations,
anions,
impurities,
and
concentration.
discusses
notion
that
pH
alters
catalyst–electrolyte
interactions
proton
concentrations,
thereby
influencing
such
as
binding
energy,
adsorption,
overall
kinetics.
Moreover,
this
provides
a
briefing
cations
Li+
can
impact
HER
positively
or
negatively,
offering
opportunities
improvement
based
metal
substrate.
Interestingly,
there
potential
be
tuned
using
ions
to
modify
M–H
bond
demonstrating
flexibility
beyond
levels
counter-ions.
The
varied
adsorption
energies
electrodes
are
also
found
influence
anions
impurities
discussed,
emphasizing
both
positive
negative
impacts
it
pointed
out
electrolyte-engineering
approach
enhances
without
permanent
surface
modifications.
underscores
importance
composition,
highlighting
challenges
solutions
in
advancing
Proceedings of the National Academy of Sciences,
Journal Year:
2024,
Volume and Issue:
121(6)
Published: Jan. 31, 2024
Oxygen
evolution
reaction
(OER)
is
the
pivotal
obstacle
of
water
splitting
for
hydrogen
production.
Dual-sites
catalysts
(DSCs)
are
considered
exceeding
single-site
due
to
preternatural
synergetic
effects
two
metals
in
OER.
However,
appointing
specific
spatial
configuration
dual-sites
toward
more
efficient
catalysis
still
remains
a
challenge.
Herein,
we
constructed
configurations
Fe-Co
dual-sites:
stereo
sites
(stereo-Fe-Co
DSC)
and
planar
(planar-Fe-Co
DSC).
Remarkably,
planar-Fe-Co
DSC
has
excellent
OER
performance
superior
stereo-Fe-Co
DSC.
DFT
calculations
experiments
including
isotope
differential
electrochemical
mass
spectrometry,
situ
infrared
spectroscopy,
Raman
reveal
*O
intermediates
can
be
directly
coupled
form
*O-O*
rather
than
*OOH
by
both
DSCs,
which
could
overcome
limitation
four
electron
transfer
steps
Especially,
proper
distance
steric
direction
benefit
cooperation
dual
dehydrogenate
into
rate-determining
step.
This
work
provides
valuable
insights
support
further
research
development
dual-site
catalysts.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(30)
Published: May 27, 2024
Abstract
Electrochemical
water
splitting
is
a
promising
technique
for
the
production
of
high‐purity
hydrogen.
Substituting
slow
anodic
oxygen
evolution
reaction
with
an
oxidation
that
thermodynamically
more
favorable
enables
energy‐efficient
Moreover,
this
approach
facilitates
degradation
environmental
pollutants
and
synthesis
value‐added
chemicals
through
rational
selection
small
molecules
as
substrates.
Strategies
small‐molecule
electrocatalyst
design
are
critical
to
electrocatalytic
performance,
focus
on
achieving
high
current
density,
selectivity,
Faradaic
efficiency,
operational
durability.
This
perspective
discusses
key
factors
required
further
advancement,
including
technoeconomic
analysis,
new
reactor
system
design,
meeting
requirements
industrial
applications,
bridging
gap
between
fundamental
research
practical
product
detection
separation.
aims
advance
development
hybrid
electrolysis
applications.
ChemSusChem,
Journal Year:
2024,
Volume and Issue:
17(15)
Published: March 12, 2024
The
development
of
advanced
electrolysis
technologies
such
as
anion
exchange
membrane
water
electrolyzer
(AEMWE)
is
central
to
the
vision
a
sustainable
energy
future.
Key
realization
AEMWE
technology
lies
in
exploration
low-cost
and
high-efficient
catalysts
for
facilitating
anodic
oxygen
evolution
reaction
(OER).
Despite
tremendous
efforts
fundamental
research,
most
today's
OER
works
are
conducted
under
room
temperature,
which
deviates
significantly
with
AEMWE's
operating
temperature
(50-80
°C).
To
bridge
this
gap,
it
highly
desirable
obtain
insights
into
catalytic
behavior
at
elevated
temperatures.
Herein,
using
well-known
perovskite
catalyst
Ba
Small,
Journal Year:
2024,
Volume and Issue:
20(26)
Published: Jan. 14, 2024
The
development
of
effective
oxygen
evolution
reaction
(OER)
and
urea
oxidation
(UOR)
on
heterostructure
electrocatalysts
with
specific
interfaces
characteristics
provides
a
distinctive
character.
In
this
study,
nanocubes
(NCs)
comprising
inner
cobalt
oxysulfide
(CoOS)
NCs
outer
CoFe
(CF)
layered
double
hydroxide
(LDH)
are
developed
using
hydrothermal
methodology.
During
the
sulfidation
process,
divalent
sulfur
ions
(S
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Aug. 21, 2024
The
insufficient
availability
and
activity
of
interfacial
water
remain
a
major
challenge
for
alkaline
hydrogen
evolution
reaction
(HER).
Here,
we
propose
an
"on-site
disruption
near-site
compensation"
strategy
to
reform
the
bonding
network
via
deliberate
cation
penetration
catalyst
support
engineering.
This
concept
is
validated
using
tip-like
bimetallic
RuNi
nanoalloys
planted
on
super-hydrophilic
high-curvature
carbon
nanocages
(RuNi/NC).
Theoretical
simulations
suggest
that
tip-induced
localized
concentration
hydrated
K+
facilitates
optimization
dynamics
intermediate
adsorption.
In
situ
synchrotron
X-ray
spectroscopy
endorses
H*
spillover-bridged
Volmer‒Tafel
mechanism
synergistically
relayed
between
Ru
Ni.
Consequently,
RuNi/NC
exhibits
low
overpotential
12
mV
high
durability
1600
h
at
10
mA
cm‒2
HER,
demonstrates
performance
in
both
electrolysis
chlor-alkali
electrolysis.
offers
microscopic
perspective
design
manipulation
local
structure
toward
enhanced
HER
kinetics.
A
with
optimized
H2
reported.
designed
shows
catalytic
by
achieving
13.6-fold
higher
mass
than
Pt/C.
