ACS Applied Energy Materials,
Journal Year:
2023,
Volume and Issue:
6(11), P. 5899 - 5911
Published: May 18, 2023
High-entropy
oxide
(HEO)
has
recently
emerged
as
a
potential
candidate
material
for
electrochemical
water
splitting,
with
excellent
activity
and
catalytic
stability,
an
alternative
to
the
state-of-the-art
oxygen
evolution
reaction
(OER)
catalyst.
The
main
characteristics
of
HEO
are
its
unique
structure
ability
tune
physical,
chemical,
mechanical
properties.
On
tuning
these
properties,
it
exhibits
high
thermal
electrical
conductivity,
activity.
In
this
work,
by
utilizing
carbonaceous
plasma
Ar
CO2
major
plasma-forming
gases,
single-phase
(NiFeMnCuZn)3O4
high-entropy
been
produced
at
discharge
power
12
kW
first
time.
as-synthesized
powder
was
annealed
various
temperatures
(300,
350,
400
°C)
characterized
using
microscopic
spectroscopic
tools.
dynamic
light
scattering
study
showed
that
had
spinel
average
particle
size
∼140
nm.
synthesized
materials
were
subjected
electrocatalytic
oxidation
studies.
results
show
350
°C
OER
in
1
M
KOH
electrolyte,
overpotential
308
mV
current
density
50
mA
cm–2
Tafel
slope
54
dec–1.
Further,
Operando-EIS
analysis
different
potentials
evidences
shows
less
resistance
toward
charge-transfer
kinetics
interface.
This
work
provides
insight
into
rapid
synthesis
phase-pure
electrocatalysts
performance
energy-related
applications.
Journal of Materials Chemistry A,
Journal Year:
2023,
Volume and Issue:
11(20), P. 10684 - 10698
Published: Jan. 1, 2023
Here
an
LDH-derived
microporous
Fe@Ni
3
Se
4
with
enriched
redox
active
Fe
2+
ion
is
reported.
The
same
has
acquired
10
mA
cm
−2
current
density
185
and
33
mV
of
overpotential
value
in
alkaline
condition
high
specific
activity
durability.
Materials Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
7(11), P. 2120 - 2152
Published: Jan. 1, 2023
In
this
review,
recent
advancement
of
MOF
based
materials
and
their
role
towards
OER
is
explored.
Tuning
structures
by
adopting
various
synthetic
strategical
techniques
are
discussed
for
the
first
time.
ACS Applied Energy Materials,
Journal Year:
2023,
Volume and Issue:
6(11), P. 5899 - 5911
Published: May 18, 2023
High-entropy
oxide
(HEO)
has
recently
emerged
as
a
potential
candidate
material
for
electrochemical
water
splitting,
with
excellent
activity
and
catalytic
stability,
an
alternative
to
the
state-of-the-art
oxygen
evolution
reaction
(OER)
catalyst.
The
main
characteristics
of
HEO
are
its
unique
structure
ability
tune
physical,
chemical,
mechanical
properties.
On
tuning
these
properties,
it
exhibits
high
thermal
electrical
conductivity,
activity.
In
this
work,
by
utilizing
carbonaceous
plasma
Ar
CO2
major
plasma-forming
gases,
single-phase
(NiFeMnCuZn)3O4
high-entropy
been
produced
at
discharge
power
12
kW
first
time.
as-synthesized
powder
was
annealed
various
temperatures
(300,
350,
400
°C)
characterized
using
microscopic
spectroscopic
tools.
dynamic
light
scattering
study
showed
that
had
spinel
average
particle
size
∼140
nm.
synthesized
materials
were
subjected
electrocatalytic
oxidation
studies.
results
show
350
°C
OER
in
1
M
KOH
electrolyte,
overpotential
308
mV
current
density
50
mA
cm–2
Tafel
slope
54
dec–1.
Further,
Operando-EIS
analysis
different
potentials
evidences
shows
less
resistance
toward
charge-transfer
kinetics
interface.
This
work
provides
insight
into
rapid
synthesis
phase-pure
electrocatalysts
performance
energy-related
applications.
