ACS Materials Letters,
Journal Year:
2024,
Volume and Issue:
6(11), P. 5103 - 5111
Published: Oct. 15, 2024
With
the
growing
interest
of
electrochemical
community
in
high-throughput
(HT)
experimentation
as
a
powerful
tool
accelerating
materials
discovery,
implementation
HT
methodologies
and
design
workflows
has
gained
traction.
We
identify
6
aspects
essential
to
workflow
electrochemistry
beyond
ease
incorporation
methods
community's
research
assist
their
improvement.
study
IrCo
mixed-metal
oxides
(MMOs)
for
oxygen
evolution
reaction
(OER)
acidic
media
using
mentioned
provide
practical
example
possible
pitfalls
strategies
counteract
them.
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(3), P. 1186 - 1186
Published: Jan. 31, 2024
Global
warming
and
the
global
energy
crisis
are
two
major
challenges
humanity
is
currently
confronting
that
pressuring
scientific
community
to
find
efficient,
low-cost,
environmentally
sustainable
solutions.
Within
this
context,
hydrogen
has
emerged
as
a
clean
efficient
carrier
promising
replace
hazardous
fossil
fuels.
The
present
study,
of
relevance
water
splitting
domain,
concerns
synthesis
novel
hybrid
structures,
namely
polyvinylpyrrolidone
(PVP)
functionalized
with
Ag-doped
LaMnO3
Pd-doped
LaMnO3,
respectively.
electrolysis
catalytic
activity
these
new
materials
was
evaluated
in
strongly
alkaline
medium.
Perovskite-based
modified
electrodes
were
manufactured
through
four
different
procedures.
samples
displayed
electrocatalytic
for
O2
evolution
reaction
most
active
electrode
one
obtained
by
drop-casting
mixture
LaMnO3:Ag/PVP
Carbon
Black
on
graphite
support.
study
aimed
at
succeeds
increasing
database
concerning
role
perovskite
oxides
water-splitting
field.
Global
warming
and
the
global
energy
crisis
are
two
major
challenges
humanity
is
currently
confronting
that
pressuring
scientific
community
to
find
efficient,
low
cost
environmentally
sustainable
solutions.
Within
this
context,
hydrogen
has
emerged
as
a
clean
efficient
carrier
promising
replace
hazardous
fossil
fuels.
The
present
study,
of
relevance
water
splitting
domain,
concerns
synthesis
novel
hybrid
structures,
based
on
perovskite
materials
functionalized
with
polyvinylpyrrolidone
(PVP).
electrolysis
catalytic
activity
these
new
was
evaluated
in
strongly
alkaline
medium.
Perovskite-based
modified
electrodes
were
manufactured
through
four
different
procedures.
samples
displayed
electrocatalytic
for
O2
evolution
reaction
most
active
electrode
one
obtained
by
drop-casting
mixture
LaMnO3:Ag/PVP,
Carbon
Black
Nafion
graphite
support.
study
aimed
at
succeeds
increasing
database
concerning
role
oxides
field.
Journal of The Electrochemical Society,
Journal Year:
2024,
Volume and Issue:
171(7), P. 074514 - 074514
Published: July 1, 2024
It
is
vital
to
understand
the
degradation
mechanisms
for
oxygen
evolution
reaction
(OER)
activity
under
acidic
electrolyser
operating
conditions.
To
this
end,
we
have
studied
a
commercial
benchmark
Ir-Oxide
electrocatalyst
during
an
accelerated
stress
test
(AST)
of
potential
cycling
(2000
cycles
at
100
mV
s
−1
)
between
1.0
and
1.7
V
in
0.1
M
HClO
4
.
The
OER
(>60%)
has
been
investigated
due
(i)
bulk
structure
changes
from
metal
dissolution,
(ii)
particle
growth
and,
(iii)
surface
chemical
state
changes.
Microscopic
images
catalyst
before
after
AST
show
no
significant
change
size
or
agglomeration;
moreover,
negligible
mass
loss
element.
Therefore,
found
be
dominantly
(99%)
associated
with
Ir,
i.e.,
increase
Ir
4+
/Ir
3+
ratio
AST.
EcoEnergy,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 22, 2024
Abstract
Proton
exchange
membrane
water
electrolyzer
(PEMWE)
is
of
great
importance
for
the
production
green
hydrogen.
The
large‐scale
implementation
PEMWE,
however,
seriously
impeded
by
sluggish
oxygen
evolution
reaction
(OER)
at
anode,
which
results
in
considerable
overpotential
and
thus
decreased
energy
conversion
efficiency.
To
overcome
this
problem,
researchers
have
extensively
explored
efficient
anode
catalysts
that
possess
high
activity
prolonged
stability.
Up
to
now,
Ir‐based
Ru‐based
are
considered
be
most
candidates.
Especially
perovskite‐based
received
intensive
attention
due
their
distinctive
structures
exceptional
OER
catalytic
performance.
further
promote
practical
application,
research
efforts
devoted
structural
engineering
toward
enhanced
In
paper,
a
review
progress
on
advanced
design
Ir‐
perovskite
presented,
with
focus
phase
engineering,
doping/substitution,
morphology
control,
compositing
other
materials
as
well
some
preparation
methods
commonly
used.
It
also
summarizes
challenges
opportunities
concerning
current
research,
yielding
comprehension
pertinent
scrutiny
future.
