Applied Sciences,
Год журнала:
2024,
Номер
14(19), С. 8923 - 8923
Опубликована: Окт. 3, 2024
R&D
in
the
area
of
high-temperature
symmetrical
electrochemical
devices
is
needed
to
meet
challenges
hydrogen
energy.
In
present
study,
effect
Fe2O3
and
CuO
sintering
aids
on
properties
highly
conductive
solid
electrolyte
La0.8Sr0.2Ga0.8Mg0.2O3−δ
La0.6Sr0.4FeO3−δ
electrodes
for
oxide
fuel
cells
was
investigated.
It
shown
that
use
leads
an
improvement
grain
boundary
conductivity
allows
us
reduce
temperature
obtain
a
dense
with
same
level
conductivity.
first
time
nature
affect
electrode
activity
differently
depending
gas
environment
(air
or
hydrogen).
On
basis
analysis
impedance
spectra
by
distribution
relaxation
times,
assumptions
were
made
about
rate-determining
steps
oxidation
oxygen
reduction.
can
change
temperature.
found
among
studied
electrodes,
3
wt.%
sintered
at
1050
°C
optimal
terms
oxidizing
reducing
atmospheres.
Hydrogen,
Год журнала:
2025,
Номер
6(2), С. 28 - 28
Опубликована: Апрель 19, 2025
This
paper
provides
a
system-level
and
dimensional
analysis
of
green
hydrogen,
assessing
its
realistic
deployment
potential
within
broader
energy
transitions.
While
hydrogen—produced
via
electrolysis
using
renewable
electricity—is
often
promoted
as
versatile
decarbonization
solution
for
industry,
mobility,
civil
applications,
practical
implementation
is
constrained
by
high
consumption,
conversion
inefficiencies,
complex
supply
chain
requirements.
study
highlights
typical
demands
across
key
sectors
evaluates
the
scale
infrastructure
needed
to
support
them,
offering
quantitative
insight
into
feasibility
large-scale
hydrogen
integration.
It
also
reflects
current
technological
maturity,
noting
that
many
promising
solutions
remain
far
from
industrial
readiness.
Finally,
underscores
importance
targeted
policies
bankable
investment
models
foster
development
ecosystems,
emphasizing
role
should
be
framed
selective,
evidence-based
strategy
focuses
on
high-impact
applications.
The
identifies
challenges,
including
magnitude
capacities
required
sector-wide
integration
investments
bridge
gaps.
ABSTRACT
Syngas
rich
in
hydrogen,
generated
through
renewable‐powered
co‐electrolysis
of
water
(H
2
O)
and
carbon
dioxide
(CO
)
using
solid
oxide
electrolysis
cells
(SOEC),
have
gained
significant
attention
due
to
its
high
efficiency
conversion
rates.
This
method
offers
a
promising
solution
for
mitigating
global
warming
reducing
CO
emissions
by
enabling
the
storage
intermittent
renewable
energy.
study
investigates
solar‐integrated
H
O
via
SOEC
produce
hydrogen‐rich
syngas,
which
is
then
utilized
methanol
synthesis
series
heat
exchangers
compressors.
Parabolic
dish
solar
collectors
supply
thermal
energy,
while
photovoltaic
modules
provide
electricity
operation.
from
industrial
processes
captured
combined
with
steam
at
inlet
co‐electrolysis.
The
proposed
system
modeled
engineering
equation
solver
software,
incorporating
mass,
exergy
balance
equations.
system's
performance
analyzed
varying
key
parameters
such
as
direct
normal
irradiance,
exchanger
effectiveness,
current
density,
cell
temperature,
pressure.
achieves
solar‐to‐fuel
29.1%,
production
rate
41.5
kg
per
hour.
Furthermore,
an
economic
analysis
was
conducted
determine
levelized
cost
fuel.
Materials,
Год журнала:
2024,
Номер
17(24), С. 6113 - 6113
Опубликована: Дек. 13, 2024
Solid
oxide
fuel
cells
(SOFCs)
and
solid
electrolyzer
(SOECs)
represent
a
promising
clean
energy
solution.
In
the
case
of
SOFCs,
they
offer
efficiency
minimal
to
zero
CO2
emissions
when
used
convert
chemical
into
electricity.
When
SOFC
systems
are
operated
in
regenerative
mode
for
water
electrolysis,
SOFCs
become
(SOECs).
The
problem
with
these
is
supply
availability
raw
materials
SOEC
components.
This
raises
significant
economic
challenges
has
an
impact
on
price
scalability
technologies.
Recycling
that
make
up
can
alleviate
by
reducing
dependence
overall
costs.
From
this
point
view,
work
perspective
analysis
examines
current
research
recycling
materials,
highlighting
potential
paths
towards
circular
economy.
existing
literature
different
approaches
key
components
SOECs
important.
Mechanical
separation
techniques
isolate
components,
along
strategies
like
leaching
or
hydrometallurgical
material
characterization,
ensure
quality
recycled
reuse
new
important
as
well.
By
evaluating
various
methods
recovered
study
aims
provide
valuable
insights
advancing
sustainable
economically
viable
technologies
within
net-zero
framework.
