Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(8), P. 085304 - 085304
Published: July 18, 2024
Abstract
The
rational
build
of
hydrogen
evolution
reaction
(HER)
electrocatalyst
with
low-cost,
highly
efficient,
and
excellent
stability
is
the
key
to
realizing
electrochemical
decomposition
water.
Herein,
optimal
ratio
between
RuO
2
Fe
3
O
4
for
high-activity
electrocatalysts
(RuO
/Fe
hybrid
nanoparticles)
was
obtained
by
microemulsion
method.
morphology
structure
characterization
show
uniform
distribution
(average
particle
size
∼35.0
±
5.1
nm)
high
crystallinity
nanoparticles.
Compared
(2:1)
(1:2)
samples,
tests
that
(1:1)
exhibit
favorable
HER
catalytic
activity
(overpotential:
181
mV
at
10
mA
cm
−2
;
Tafel
slope:
130
dec
−1
)
(no
obvious
attenuation
during
20
h)
in
an
alkaline
medium.
mechanism
analysis
implies
doping
accelerated
electron
transfer
rate
thus
increased
via
results
impedance
spectroscopy
(EIS)
tests.
Blending
appropriate
amount
into
can
not
only
reduce
cost
but
also
improve
electrocatalytic
HER,
which
expected
give
guidance
development
stable
nanostructured
electrolytes.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 4, 2024
Abstract
Developing
low‐cost,
highly
active,
and
stable
bifunctional
catalysts
is
of
great
significance
for
electrochemical
water
splitting.
Herein,
novel
Ru‐O
3
Se
4
single
atoms
doped
Ni
2
/FeSe
interface
catalyst
fabricated
by
a
two‐step
method
hydrogen
evolution
reaction
(HER)
oxygen
(OER).
Notably,
Ru‐Ni
nanosheets
exhibit
excellent
HER
(43
mV@10
mA
cm
−2
)
OER
(283
mV@100
activities
in
alkaline
solution.
In
particular,
the
mass
activity
3593.61
mg
Ru
−1
at
200
mV
7073.80
400
OER,
which
25.91
367.28
times
commercial
Pt/C
RuO
,
respectively.
situ
spectroscopy
techniques
confirm
facilitate
adsorption
intermediates
H
*
OOH
during
processes,
Further
density
functional
theory
calculations
reveal
introducing
causes
transfer
electrons
from
to
Fe
atoms,
leading
redistribution
charge
interface,
thus
reducing
energy
barriers
rate‐determining
step
−0.37
1.92
eV
This
work
emphasizes
significant
role
overall
Catalysis Science & Technology,
Journal Year:
2024,
Volume and Issue:
14(19), P. 5525 - 5544
Published: Jan. 1, 2024
This
review
includes
the
mechanism,
catalyst
design
strategy,
performance
descriptors,
development,
and
perspectives
on
selective
methanol
oxidation
electrocatalysts
for
co-production
of
hydrogen
value-added
formate.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 6, 2024
Abstract
Producing
hydrogen
via
seawater
electrolysis
is
pivotal
for
addressing
both
energy
and
environmental
crises.
An
industrial‐current‐density
electrocatalyst
consisting
of
Mo‐doped
FeCoP
nanorods
decorated
with
MnO
x
nanosheets
elaborately
designed
grows
in
situ
on
nickel
foam
forming
hierarchical
Mo‐FeCoP@MnO
/NF
(M‐FCP@MnO
/NF)
electrolysis.
Density
functional
theory
calculations
demonstrate
that
species
remarkably
reduce
the
adsorption
capacity
Cl
−
,
which
enhances
corrosion
resistance
selectivity
M‐FCP@MnO
during
Moreover,
incorporating
high‐valence
Mo
forms
a
superficial
electrostatic
layer
electrocatalysts
to
repel
.
Owing
its
enhanced
double
protection
mechanism
unique
self‐healing
characteristics,
requires
overpotentials
only
209
mV
(HER)
270
(OER)
reach
current
density
≈1.0
A
cm
−2
maintains
stable
operation
over
120
h
alkaline
seawater.
The
colorimetric
analysis
indicates
negligible
ClO
production
post
stability
test,
indicating
OER
approaches
100%.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
17(1), P. 909 - 919
Published: Dec. 28, 2024
The
exploration
and
rational
design
of
high-performance,
durable,
non-precious-metal
bifunctional
oxygen
electrocatalysts
are
highly
desired
for
the
large-scale
application
overall
water
splitting.
Herein,
an
effective
straightforward
coupling
approach
was
developed
to
fabricate
high-performance
OER/HER
based
on
core–shell
nanostructure
comprising
a
Ni/Ni3N
core
NiFe(OH)x
shell.
as-prepared
Ni/Ni3N@NiFe(OH)x-4
catalyst
exhibited
low
overpotentials
57
243
mV
at
10
mA
cm–2
HER
OER
in
1.0
m
KOH,
respectively,
superior
most
reported
so
far.
Compared
unmodified
Ni/Ni3N,
43.3-fold
increase
mass
activity
8.7-fold
HER,
as
well
29.5-fold
intrinsic
2.6-fold
HER.
When
employed
both
cathode
anode
electrolyzer
splitting
reaction,
its
voltage
reduced
1.58
V
cm–2.
This
surface
reconstruction
method
increased
electrochemically
active
area
enhanced
catalytic
activity.
Furthermore,
situ
Raman
spectroscopy
revealed
that
Fe
etching
onset
potential
phase
NiOOH,
promoted
formation,
accelerated
reaction
kinetics,
thereby
enhancing
electrocatalytic
performance
catalyst.
Physica Scripta,
Journal Year:
2024,
Volume and Issue:
99(8), P. 085304 - 085304
Published: July 18, 2024
Abstract
The
rational
build
of
hydrogen
evolution
reaction
(HER)
electrocatalyst
with
low-cost,
highly
efficient,
and
excellent
stability
is
the
key
to
realizing
electrochemical
decomposition
water.
Herein,
optimal
ratio
between
RuO
2
Fe
3
O
4
for
high-activity
electrocatalysts
(RuO
/Fe
hybrid
nanoparticles)
was
obtained
by
microemulsion
method.
morphology
structure
characterization
show
uniform
distribution
(average
particle
size
∼35.0
±
5.1
nm)
high
crystallinity
nanoparticles.
Compared
(2:1)
(1:2)
samples,
tests
that
(1:1)
exhibit
favorable
HER
catalytic
activity
(overpotential:
181
mV
at
10
mA
cm
−2
;
Tafel
slope:
130
dec
−1
)
(no
obvious
attenuation
during
20
h)
in
an
alkaline
medium.
mechanism
analysis
implies
doping
accelerated
electron
transfer
rate
thus
increased
via
results
impedance
spectroscopy
(EIS)
tests.
Blending
appropriate
amount
into
can
not
only
reduce
cost
but
also
improve
electrocatalytic
HER,
which
expected
give
guidance
development
stable
nanostructured
electrolytes.
