ACS Omega,
Год журнала:
2024,
Номер
9(23), С. 24633 - 24642
Опубликована: Май 24, 2024
SrFe1–xSixO3−δFy
cathode
materials
(x
=
0.05,
0.1,
0.15;
y
0,
0.5)
were
prepared
via
a
solid-state
method.
X-ray
diffraction
results
show
that
the
synthesized
F
doping
samples
perovskite
structure.
photoelectron
spectroscopy
findings
F–
anions
doped
into
SrFe1–xSixO3−δ.
Transmission
electron
microscopy
and
energy-dispersive
performed
to
analyze
microstructure
element
distribution
in
materials,
respectively.
Double-layer
composite
symmetric
cells
through
screen
printing
Scanning
images
revealed
double-layer
adhered
well
electrolyte.
The
with
can
increase
coefficient
of
thermal
expansion
electrochemical
impedance
indicate
oxygen
transport
capacity
SrFe0.95Si0.05O3−δ
material
be
improved
by
F–,
but
such
method
decrease
SrFe0.9Si0.1O3−δ.
At
800
°C,
peak
power
density
single
cell
supported
an
anode
SrFe0.9Si0.1O3−δF0.1
as
reached
388.91
mW/cm2.
Thus,
incorporation
SrFe1–xSixO3−δ
improve
their
performance
enable
application
for
solid-oxide
fuel
cells.
Protonic
ceramic
fuel
cells
(PCFCs)
are
regarded
as
efficient
energy
conversion
devices
for
addressing
the
challenges
of
carbon
neutrality,
which
can
directly
convert
chemical
into
electricity
at
reduced
operating
temperatures
below
700
°C.
However,
insufficient
strength
and
immature
preparation
processes
PCFCs
limit
their
practical
application.
In
this
work,
novel
anode-supported
microtubular
with
a
tube
diameter
less
than
5
mm
were
successfully
prepared
by
extrusion
technology
combined
dip-coating
method.
The
newly
developed
BaZr0.4Ce0.4Y0.1Gd0.1O3-δ
(BZCYG4411)
proton-conducting
electrolyte
was
synthesized
using
an
extremely
simple
one-step
solid-state
reaction
method,
showing
comparable
electrical
conductivity
BaZr0.4Ce0.4Y0.1Yb0.1O3-δ
(BZCYYb4411)
BaZr0.1Ce0.7Y0.1Yb0.1O3-δ
(BZCYYb1711)
electrolytes,
well
excellent
stability.
single
cell
Ba2Sc0.1Nb0.1Co1.5Fe0.3O6-δ
(BSNCF)
cathode
exhibited
high
peak
power
density
906.86
mW
cm-2
Additionally,
PCFC
demonstrated
stability
after
about
103
h
durability
test
constant
current
0.5
A
650
This
study
provides
highly
simplified
fabricating
high-performance
durable
PCFCs.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 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
