Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(34), P. 16037 - 16046
Published: Aug. 9, 2024
The
core
principles
of
multicomponent
interface
and
electronic
structure
engineering
are
essential
in
designing
high-performance
catalysts
for
the
oxygen
evolution
reaction
(OER).
However,
combining
these
aspects
within
a
catalyst
is
significant
challenge.
In
this
investigation,
novel
approach
involving
development
hybrid
Ir-doped
CoMO4–Co(OH)2
(M
=
W
Mo)
hollow
nanoboxes
was
introduced,
enabling
remarkably
efficient
water
oxidation
electrocatalysis.
Constructed
from
ultrathin
nanosheet-assembled
nanoboxes,
structures
boast
wealth
active
centers
intermediate
species,
which
turn
enhance
both
charge
transfer
mass
transport
capabilities.
Moreover,
compelling
synergistic
effects
arising
interaction
between
CoMO4
Co(OH)2
significantly
bolster
OER
electrocatalysis
by
facilitating
electron
transfer.
introduction
Ir
atoms
serves
to
strategically
adjust
structure,
fine-tune
its
state,
operate
as
electrocatalysis,
thus
diminishing
overpotential.
This
configuration
results
Ir-CoWO4–Co(OH)2
Ir-CoMoO4–Co(OH)2
exhibiting
impressively
low
overpotentials
252
261
mV,
respectively,
10
mA
cm–2.
Utilized
conjunction
with
Pt/C
two-electrode
system
overall
splitting,
mere
1.53
V
cell
potential
needed
achieve
desired
cm–2
current
density.
Journal of the American Ceramic Society,
Journal Year:
2023,
Volume and Issue:
107(2), P. 803 - 816
Published: Nov. 1, 2023
Abstract
For
practical
H
2
generation,
it
is
currently
difficult
to
create
modules
for
electrochemical
water
splitting
that
are
efficient
and
inexpensive
over
a
broad
pH
range.
In
this
study,
novel
ZnC
8
@NCNT
electrocatalyst
fabricated
via
simple
pyrolysis
of
melamine
with
zinc
chloride
carbon
nanotubes
(CNTs).
The
self‐assembled
hybrid
material
was
examined
catalyze
the
oxygen
evolution
reaction
(OER)
hydrogen
(HER)
in
an
alkaline
range,
responds
lower
OER
overpotential
245
mV,
smaller
Tafel
slope
50.0
mV
dec
−1
turnover
frequency
(TOF)
0.67
s
due
its
unique
structure.
HER
response
generated
quite
satisfactory
223
value
107
.
supported
by
conductive
CNTs
increases
catalytic
reactivity
synergistic
manner,
which
superior
performance
as
cutting‐edge
catalyst
electrolysis
electrolytic
cell.
Furthermore,
establishes
cost‐effective
alternative
expensive
Ir,
Pt,
Pd,
Ru‐based
catalysts.
Nanoscale Horizons,
Journal Year:
2023,
Volume and Issue:
8(9), P. 1174 - 1193
Published: Jan. 1, 2023
An
overview
of
the
recent
progress
Ir-based
catalysts
constructed
with
different
dimensions
was
provided
to
make
a
comprehensive
understanding
their
structural
and
catalysis
performance.
Deleted Journal,
Journal Year:
2023,
Volume and Issue:
2, P. e9120086 - e9120086
Published: June 30, 2023
The
efficient
non-noble
metal-based
bifunctional
electrocatalyst
for
hydrogen
evolution
reaction
(HER)
and
oxygen
(OER)
has
attracted
great
interest,
which
is
highly
significant
to
enhance
the
efficiency
of
production
from
water
electrolysis.
Herein,
inspired
by
appropriate
adsorption
free
energy
transition
metal
alloy
strong
corrosion
resistance
phosphide
in
alkaline
electrolyte,
carbon
compound
NiFeMo-P
anchored
on
nickel
foam
(NiFeMo-P-C)
obtained
simple
one-pot
hydrothermal
subsequent
reduction
treatment.
Remarkably,
NiFeMo-P-C
exhibits
excellent
electrocatalytic
performances
toward
HER
OER
with
low
overpotentials
87
196
mV
at
10
mA·cm–2,
respectively.
Moreover,
electrolyzer
using
as
both
cathode
anode
only
requires
a
cell
voltage
1.50
V
reach
current
density
along
an
outstanding
long-term
stability
50
h.
synergistic
effect
among
alloys
phosphide,
partially
broken
hollow
morphology
porous
substrate
jointly
impart
high
activity
superior
durability.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 16, 2024
Abstract
The
commercialization
of
water‐splitting
technology
strongly
relies
on
the
stable
and
high‐performance
electrocatalyst
for
hydrogen
oxygen
evolution
reactions
(HER‐OER).
In
this
work,
nickel
dopants
in
IrRu
alloyed
acidic
water
splitting
activity
are
investigated.
incorporation
induces
more
atoms
coordinating
with
Ir/Ru
facilitating
formation
*OOH
species
via
nucleophilic
attack
by
H
2
O.
Additionally,
a
fast
surface
reconstruction
is
achieved
due
to
electrochemical
dissolution
Ni
dopants;
as
result,
incorporated,
evidenced
situ
Raman
spectroscopy
impedance
spectroscopy.
Therefore,
mass
Ni@IrRu
enhanced
threefold
than
commercial
IrO
OER
catalysis.
Moreover,
balance
binding
strength;
only
609
mV
overpotential
demanded
reach
1
A
cm
−2
HER
polymer
electrolyte
membrane
electrolyzer
(PEMWE)
test
indicates
1.87
V
required
attain
,
160
lower
Pt/C‐IrO
revealing
its
potential
application
PEMWE.
Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
63(34), P. 16037 - 16046
Published: Aug. 9, 2024
The
core
principles
of
multicomponent
interface
and
electronic
structure
engineering
are
essential
in
designing
high-performance
catalysts
for
the
oxygen
evolution
reaction
(OER).
However,
combining
these
aspects
within
a
catalyst
is
significant
challenge.
In
this
investigation,
novel
approach
involving
development
hybrid
Ir-doped
CoMO4–Co(OH)2
(M
=
W
Mo)
hollow
nanoboxes
was
introduced,
enabling
remarkably
efficient
water
oxidation
electrocatalysis.
Constructed
from
ultrathin
nanosheet-assembled
nanoboxes,
structures
boast
wealth
active
centers
intermediate
species,
which
turn
enhance
both
charge
transfer
mass
transport
capabilities.
Moreover,
compelling
synergistic
effects
arising
interaction
between
CoMO4
Co(OH)2
significantly
bolster
OER
electrocatalysis
by
facilitating
electron
transfer.
introduction
Ir
atoms
serves
to
strategically
adjust
structure,
fine-tune
its
state,
operate
as
electrocatalysis,
thus
diminishing
overpotential.
This
configuration
results
Ir-CoWO4–Co(OH)2
Ir-CoMoO4–Co(OH)2
exhibiting
impressively
low
overpotentials
252
261
mV,
respectively,
10
mA
cm–2.
Utilized
conjunction
with
Pt/C
two-electrode
system
overall
splitting,
mere
1.53
V
cell
potential
needed
achieve
desired
cm–2
current
density.
