Membranes,
Journal Year:
2023,
Volume and Issue:
13(5), P. 502 - 502
Published: May 10, 2023
Membranes
based
on
complex
solid
oxides
with
oxygen-ionic
conductivity
are
widely
used
in
high-temperature
electrochemical
devices
such
as
fuel
cells,
electrolyzers,
sensors,
gas
purifiers,
etc.
The
performance
of
these
depends
the
value
membrane.
Highly
conductive
overall
composition
(La,Sr)(Ga,Mg)O3
have
regained
attention
researchers
recent
years
due
to
progress
development
symmetrical
electrodes.
In
this
research,
we
studied
how
introduction
iron
cations
into
gallium
sublattice
affects
fundamental
properties
and
cells
(La,Sr)(Ga,Fe,Mg)O3.
It
was
found
that
leads
an
increase
electrical
thermal
expansion
oxidizing
atmosphere,
while
no
behavior
observed
a
wet
hydrogen
atmosphere.
electrolyte
activity
Sr2Fe1.5Mo0.5O6−δ
electrodes
contact
electrolyte.
Fuel
cell
studies
shown
that,
case
550
µm-thick
Fe-doped
supporting
(Fe
content
10
mol.%)
electrodes,
exhibits
power
density
more
than
600
mW/cm2
at
800
°C.
Small,
Journal Year:
2024,
Volume and Issue:
20(19)
Published: Jan. 23, 2024
Abstract
Perovskite
oxides
exhibit
bifunctional
activity
for
both
oxygen
reduction
(ORR)
and
evolution
reactions
(OER),
making
them
prime
candidates
energy
conversion
in
applications
like
fuel
cells
metal‐air
batteries.
Their
intrinsic
catalytic
prowess,
combined
with
low‐cost,
abundance,
diversity,
positions
as
compelling
alternatives
to
noble
metal
catalysts.
This
review
encapsulates
the
nuances
of
perovskite
oxide
structures
synthesis
techniques,
providing
insight
into
pivotal
active
sites
that
underscore
their
behavior.
The
focus
centers
on
breakthroughs
surrounding
lanthanum
(La)
strontium
(Sr)‐based
oxides,
specifically
roles
zinc‐air
batteries
(ZABs).
An
introduction
mechanisms
ORR
OER
is
provided.
Moreover,
light
shed
strategies
determinants
central
optimizing
performance
La
Sr‐based
oxides.
Energy Reviews,
Journal Year:
2024,
Volume and Issue:
3(4), P. 100085 - 100085
Published: March 30, 2024
Perovskite
oxides
with
high
oxygen
ionic
conductivity
have
played
major
roles
in
five
important
devices
of
significance
for
clean
energy
future
and
automated
manufacturing,
i.e.,
solid
oxide
fuel
cell,
electrolysis
permeable
membranes,
gas
sensors,
pumps,
all
which
exhibit
different
performance
requirements
challenges.
Although
improving
the
ion
transport
within
perovskite
lattice
serves
as
key
to
increasing
efficiencies
perovskites'
components
these
devices,
criteria,
structures,
and/or
physicochemical
properties
often
become
complicating
factors.
It
is
understood
that
mainly
determined
by
crystal
structure,
A/B-site
cations
their
content,
vacancies.
This
perspective
overviews
factors,
can
be
manipulated
adapt
needs
devices.
Brief
discussions
are
then
made
on
concepts,
status,
outlook
each
device
together
strategies
performance.
The
summaries
insights
provided
this
review
anticipated
promote
more
strategic
research
development
directions
activities
applications.
Carbon Energy,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 2, 2024
Abstract
Crystalline
perovskite
oxides
are
regarded
as
promising
electrocatalysts
for
water
electrolysis,
particularly
anodic
oxygen
evolution
reactions,
owing
to
their
low
cost
and
high
intrinsic
activity.
Perovskite
with
noncrystalline
or
amorphous
characteristics
also
exhibit
electrocatalytic
performance
toward
electrochemical
splitting.
In
this
review,
a
fundamental
understanding
of
the
advantages
crystalline,
noncrystalline,
is
presented.
Subsequently,
recent
progress
in
development
advanced
electrolysis
by
engineering
breaking
crystallinity
reviewed,
special
focus
on
underlying
structure–activity
relationships.
Finally,
remaining
challenges
unsolved
issues
presented,
an
outlook
briefly
proposed
future
exploration
next‐generation
water‐splitting
based
oxides.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(36)
Published: April 11, 2024
Abstract
The
high
toxicity,
volatility,
and
dispersion
of
the
light
aromatics,
benzene,
toluene,
xylene
(BTX)
pose
a
serious
threat
to
environment
human
health.
Compared
incineration,
catalytic
oxidation
technologies
for
BTX
removal
offer
benefits
such
as
low
energy
consumption,
efficiency,
pollution.
ABO
3
–type
perovskite
catalysts
(ABO
–PCs)
are
particularly
promising
materials
due
their
activity
thermal
stability,
well
adjustable
elemental
composition
flexible
structure
allowing
properties
be
improved.
Nonetheless,
full
potential
–PCs
has
yet
reached.
This
review
systematically
critically
analyses
progress
in
by
–PCs.
Catalytic
performance
is
assessed
each
category
perovskite,
including
non–doped,
doped
(A–,
B–,
or
A/B–site
doped),
loading
type
(noble
metal,
metal
oxide,
matrix
composite),
with
structure–activity
relationships
established.
A
kinetic
model
proposed
mechanism
also
presented.
Finally,
challenges
opportunities
applied
other
reactions
highlighted.
Heliyon,
Journal Year:
2023,
Volume and Issue:
9(9), P. e19943 - e19943
Published: Sept. 1, 2023
Currently,
electrochemical
sensors
are
regarded
as
an
efficient
tool
for
the
biological
and
environmental
sensing.
Electrochemical
sensors,
such
voltammetric,
amperometric,
impedimetric
have
gained
great
attention
due
to
their
simplicity,
sensitivity,
selectivity.
The
performance
of
these
could
be
enhanced
by
surface
engineered
nano/micro
structured
materials
with
conducting
dyes/redox
species.
In
this
review,
a
focus
has
been
put
on
redox-active
dyes
because
electronic,
optical,
electrochromic,
conductivity
properties.
mechanisms
oxidation
subsequent
polymerization
different
at
electrodes
studied.
Additionally,
role
in
catalyzing
or
reduction
target
analytes
surfaces
also
highlighted.
were
used
probes
detecting
various
samples.
Overall,
considered
promising
polymers
assessment
many
drugs,
pesticides,
surfactants,
heavy
metal
ions.
ACS Applied Energy Materials,
Journal Year:
2023,
Volume and Issue:
6(21), P. 11255 - 11267
Published: Nov. 1, 2023
High-entropy
perovskite
oxides
(HEPOs)
combine
the
advantageous
characteristics
of
both
high-entropy
and
such
as
robust
long-term
crystal
electronic
structure
stability
finely
adjustable
physicochemical
properties.
HEPOs
hold
significant
promise
bifunctional
catalysts
for
oxygen
electrocatalytic
reactions
in
alkaline
environments.
In
this
study,
we
introduce
a
series
with
distinct
cation
ratios,
denoted
La(FexCoyMnzCr0.2Zn0.2)O3
(with
x,
y,
z
=
0.3,
0.2,
0.1,
alternating).
were
synthesized
through
rapid
joule
synthesis.
The
main
objective
is
to
explore
influence
composition
while
maintaining
consistent
across
all
HEPOs.
La(Fe0.2Co0.3Mn0.1Cr0.2Zn0.2)O3−δ
(referred
La5M-Co/Mn)
HEPO
exhibits
an
abundance
vacancies
due
disparity
net
charge
resulting
from
specific
ratios.
As
result
unique
composition,
La5M-Co/Mn
electrocatalyst
demonstrates
impressively
low
overpotential
296
mV
at
10
mA
cm–2
evolution
reaction
(OER)
boasts
index
(BI)
1.042
V
media,
signifying
exceptional
catalytic
activity.
When
incorporated
electrocatalysts
air
cathode
zinc–air
batteries,
outperforms
equimolar
(La5M),
showcasing
higher
peak
power
density,
capacity,
cyclic
stability.
Our
findings
underscore
feasibility
synthesizing
identical
structures
but
varying
Furthermore,
results
highlight
that
adjusting
ratios
induces
lattice
distortions
imbalances,
ultimately
leading
augmented
presence
enhancing
bifunctionality
electrocatalyst.
This
approach
holds
fundamental
strategy
tailor
within
same
structure,
yielding
substantial
improvements
rechargeable
aqueous
battery
performance.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 1, 2024
Abstract
Perovskite
oxides,
particularly
double
perovskite
have
drawn
significant
research
interest
within
the
fields
of
solid‐state
chemistry
and
materials
science.
As
a
quintessential
oxide,
Sr
2
Fe
1.5
Mo
0.5
O
6‐δ
(SFM)
has
unique
electronic,
magnetic,
catalytic
properties.
These
attributes
make
it
promising
candidate
for
energy
conversion
storage
applications.
This
review
offers
comprehensive
overview
advancements
using
SFM
across
various
applications,
including
solid
oxide
cells,
protonic
ceramic
electrocatalysis.
Notably,
highlights
emerging
optimization
strategies
that
enhance
functionality
based
on
fundamental
understanding
reaction
mechanisms.
The
concludes
by
discussing
persistent
challenges
facing
SFM‐based
functional
materials,
as
well
their
prospects,
considering
both
industrial
