Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 6, 2024
Abstract
In
converting
CO
2
into
useful
chemical
starting
materials,
the
electrochemical
reduction
reaction
(CO2RR)
promises
to
be
a
major
carbon‐utilization
strategy,
contributing
carbon‐neutral
society.
These
are
proposed
using
hydrothermal
conditions—characterized
by
high
temperature
and
pressure—to
address
challenges
of
CO2RR.
Technology
assessment
revealed
that
additional
energy
create
conditions
doesnot
increase
overall
demand
for
production,
emissions
from
methanol
production
through
CO2RR
can
negative
with
photovoltaic
electricity
waste
heat
supply.
Moreover,
experimentally
demonstrated
promising
improvements
in
process
elucidated
specific
roles
pressure
promoting
An
150
°C,
improves
diffusion
coefficient
water,
resulting
enhancement
current
density
activation
overpotential
On
other
hand,
pressurization
prevent
decrease
solubility
under
high‐temperature
conditions,
keeping
selectivity
findings
indicate
plausible
avenue
efficient
recycling
its
integration
carbon
cycle,
marking
significant
stride
toward
sustainable,
zero‐emission
Chemical Engineering Science,
Journal Year:
2024,
Volume and Issue:
293, P. 120038 - 120038
Published: March 20, 2024
Experimental
measurements
of
CO
solubility
in
water
and
NaCl(aq)
solutions
are
reported
at
temperatures,
pressures
salt
molalities
relevance
to
geological
carbon
storage:
(323.15
423.15)
K,
(2
28)
MPa
4)
mol·kg−1,
respectively.
The
expanded
relative
uncertainty
the
is
estimated
be
4.4%
95%
confidence
intervals.
This
study
provides
first
data
for
brine
with
high
molality
salt.
results
from
this
were
used
develop
simple
models
aqueous
NaCl
as
a
function
temperature,
pressure
dependent,
up
4
mol·kg−1.
Electrochimica Acta,
Journal Year:
2024,
Volume and Issue:
498, P. 144612 - 144612
Published: June 22, 2024
We
describe
the
design
and
development
of
a
rotating
disk
electrode
(RDE)
cell
capable
operating
at
pressures
up
to
200
bar
temperatures
200°C.
This
setup
enables
electrochemical
surface
characterization
through
techniques
such
as
voltammetry
impedance
spectroscopy,
under
different
mass
transport
regimes.
Furthermore,
evaluation
catalytic
performance,
including
CO2
reduction,
is
possible
system
works
in
semi-continuous
mode
interfaced
with
online
gas
sample
measurements.
As
proof
concept
high-pressure
designed,
we
examined
temperature-dependent
changes
cyclic
voltammograms
(CVs)
polycrystalline
gold
150°C
50
bar.
Additionally,
performance
reduction
CO
on
was
investigated
pressure
temperature.
Our
results
indicate
positive
impact
temperature
faradaic
efficiency
(FE)
towards
50°C,
beyond
which
rapid
drop
observed
atmospheric
pressure.
Conversely,
increasing
positively
affected
solubility
electrolyte,
resulting
enhanced
FE
CO,
reaching
approximately
90%
6
compared
40%
Notably,
further
increases
did
not
significantly
alter
FE,
but
led
higher
current
densities.
Moreover,
exceeding
bar,
plateau
than
50°C.
observation
suggests
that
can
sustain
electrolysis,
validating
hypothesis
would
suppress
decay
temperatures.
study
opens
promising
avenues
for
future
investigations
electrocatalysis,
ranging
from
fundamental
explorations
modifications
induced
by
variations
high-performance
catalysts.
Journal of The Electrochemical Society,
Journal Year:
2024,
Volume and Issue:
171(10), P. 103503 - 103503
Published: Sept. 25, 2024
Gas
diffusion
electrodes
(GDEs)
play
a
crucial
role
in
the
development
of
electrochemical
CO
2
reduction
(eCO
R)
toward
an
economically
viable
process.
While
membrane
electrode
assemblies
(MEAs)
are
currently
most
efficient
approach
due
to
their
low
cell
voltage,
electrolyte
supported
GDEs
still
present
valuable
tool
for
characterization
catalysts
under
industrially
relevant
current
densities,
allowing
direct
measurement
potential
against
reference
electrodes.
In
this
study,
common
experimental
methods
iR
correction
and
pressure
control
eCO
R
literature
studies
on
analyzed
compared
regarding
impact
reported
results.
It
is
revealed
that
failure
account
dynamic
changes
iR-drop
can
lead
significant
inaccuracies
potentials.
Additionally,
application
differential
across
shown
performance,
leading
additional
errors
Based
these
findings,
protocol
single
high
frequency
response
as
method
developed,
providing
reproducible
R.
Advanced Sustainable Systems,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 6, 2024
Abstract
In
converting
CO
2
into
useful
chemical
starting
materials,
the
electrochemical
reduction
reaction
(CO2RR)
promises
to
be
a
major
carbon‐utilization
strategy,
contributing
carbon‐neutral
society.
These
are
proposed
using
hydrothermal
conditions—characterized
by
high
temperature
and
pressure—to
address
challenges
of
CO2RR.
Technology
assessment
revealed
that
additional
energy
create
conditions
doesnot
increase
overall
demand
for
production,
emissions
from
methanol
production
through
CO2RR
can
negative
with
photovoltaic
electricity
waste
heat
supply.
Moreover,
experimentally
demonstrated
promising
improvements
in
process
elucidated
specific
roles
pressure
promoting
An
150
°C,
improves
diffusion
coefficient
water,
resulting
enhancement
current
density
activation
overpotential
On
other
hand,
pressurization
prevent
decrease
solubility
under
high‐temperature
conditions,
keeping
selectivity
findings
indicate
plausible
avenue
efficient
recycling
its
integration
carbon
cycle,
marking
significant
stride
toward
sustainable,
zero‐emission
