Chemical Synthesis,
Journal Year:
2024,
Volume and Issue:
4(4)
Published: Oct. 9, 2024
With
the
depletion
of
traditional
energy
sources
and
growing
environmental
concerns,
it
is
becoming
increasingly
urgent
to
develop
green,
low-emission
renewable
technologies
replace
fossil
fuel-driven
methods
that
emit
carbon
dioxide
(CO2).
Currently,
electrochemical
production
high-value-added
chemicals
fuels
from
CO2
has
aroused
great
interest
scientists.
However,
make
full
use
for
preparation
chemicals,
necessary
expand
range
electrosynthesis
methods,
in
particular
by
expanding
reaction
pathways
through
with
different
substrates.
In
general,
can
form
new
covalent
bonds
substrate
molecules
formation
C−X
bonds,
including
C−H,
C−C,
C−N,
C−O,
C−S
which
would
possible
products
diversifying
pathway.
this
review,
we
focus
on
research
progress
conversion
bond
formation.
We
start
examining
fundamentals
reactions
summarizing
modes.
Next,
discuss
(C−H,
C−S)
using
molecules.
Finally,
(i)
strategies
design
activity
optimization
catalyst
materials
(ii)
future
development
forming
five
types
small
are
discussed,
along
an
outlook
their
prospects.
ACS Applied Materials & Interfaces,
Journal Year:
2023,
Volume and Issue:
15(40), P. 47135 - 47144
Published: Oct. 2, 2023
Searching
for
electrocatalysts
the
electrochemical
CO2
reduction
reaction
(e-CO2RR)
with
high
selectivity
and
stability
remains
a
significant
challenge.
In
this
study,
we
design
Cu-CuInO2
composite
stable
states
of
Cu0/Cu+
by
electrochemically
depositing
indium
onto
CuCl-decorated
Cu
foil.
The
catalyst
displays
superior
toward
CO
product,
maximal
Faraday
efficiency
89%
at
-0.9
V
vs
reversible
hydrogen
electrode,
maintains
impressive
up
to
27
h
retention
rate
>76%
in
efficiency.
Our
systematical
characterizations
reveal
that
catalyst's
performance
is
attributed
CuInO2
nanoparticles.
First-principles
calculations
further
confirm
CuInO2(012)
more
conducive
generation
than
Cu(111)
under
applied
potential
presents
higher
energy
barrier
evolution
reaction.
These
theoretical
predictions
are
consistent
our
experimental
observations,
suggesting
nanoparticles
offer
facile
e-CO2RR.
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.
Malaysian Journal of Science,
Journal Year:
2024,
Volume and Issue:
43(sp1), P. 8 - 14
Published: July 31, 2024
The
electrochemical
reduction
of
carbon
dioxide
(CO₂RR)
represents
a
promising
strategy
for
CO₂
mitigation,
requiring
highly
efficient
catalysts
integrated
into
devices
to
achieve
high
conversion
rates
and
energy
efficiencies
desired
products.
Establishing
gas
diffusion
electrode
is
crucial
practical
applications
reactions
(CO₂RR).
This
study
uses
the
air-spraying
method
immobilise
nano-catalysts
onto
layer
(GDL)
with
exceptional
homogeneity.
A
composite
copper(I)
oxide
(Cu₂O)
zinc
(ZnO)
nanoparticles
in
4:1
ratio
was
deposited
GDL.
Surface
morphology
analysis
revealed
successful
immobilisation
cubic
Cu₂O
hexagonal
wurtzite
ZnO
uniform
distribution,
indicating
potential
improvements
CO₂RR
performance.
Contact
angle
measurements
were
conducted
assess
surface
hydrophobicity,
comparing
pristine
GDL
Cu₂O/ZnO-based
Although
contact
on
slightly
reduced
from
143.69°
134.82°,
it
maintained
its
hydrophobic
nature.
attributed
Nafion,
binder
catalyst
ink
mixture.
sustained
reaction
process.
X-ray
diffraction
(XRD)
diffractograms
compared
reference
Cu₂O,
ZnO,
bare
presence
all
essential
peaks
confirms
immobilisation.
technique
effectively
achieved
favourable
distribution
active
metals.
