Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 31, 2025
Abstract
The
electrocatalytic
carbon
dioxide
reduction
reaction
(CO
2
RR)
can
be
significantly
improved
by
the
presence
of
alkali
metal
cations,
yet
underlying
mechanisms
remain
unclear.
In
this
study,
we
developed
clean
Cu
nanoparticles
with
tailored
curvatures
to
modulate
local
concentration
K
+
cations
and
investigate
their
effects
on
CO
RR.
adjustment
particle
curvature
allows
for
direct
control
over
cation
concentrations
within
electrochemical
double
layer,
enabling
broad‐range
modulation
without
concerns
regarding
solubility
limitations
or
anionic
interference.
By
tuning
plasmonic
modes
particles,
achieved
highly
sensitive
surface‐enhanced
Raman
spectroscopy
(SERS)
under
resonant
conditions,
facilitating
in
situ
tracking
short‐lived
intermediates
Our
results
revealed
that
not
only
stabilize
*COOH
*CO
species
reduce
energy
barrier
C─C
coupling
but
also
increase
surface
coverage
*CO,
particularly
bridge
configurations.
Furthermore,
our
findings
suggest
interactions
between
atop
play
a
crucial
role
coupling,
offering
insights
design
electrocatalysts
Chemical Science,
Journal Year:
2024,
Volume and Issue:
15(21), P. 7870 - 7907
Published: Jan. 1, 2024
This
review
highlights
the
structure–activity
relationship
of
ECO
2
RR,
provides
a
detailed
summary
advanced
materials
by
analyzing
electrocatalytic
applications
and
reaction
mechanisms,
discusses
challenges
in
both
devices.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(12), P. 6295 - 6321
Published: Jan. 1, 2024
Developing
sophisticated
strategies
to
stabilize
oxidative
metal
catalysts
based
on
the
correlation
between
dynamic
oxidation
state
and
product
profile
is
favorable
for
efficient
electrochemical
CO
2
conversion.
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
53(17), P. 8563 - 8631
Published: Jan. 1, 2024
Ionic
liquids
(ILs)
and
deep
eutectic
solvents
(DESs)
have
tremendous
potential
for
reactive
capture
of
CO
2
,
due
to
their
highly
properties,
including
a
wide
electrochemical
stability
window,
low
volatility,
high
solubility.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 19, 2025
Abstract
Acidic
electrochemical
CO
2
conversion
is
a
promising
alternative
to
overcome
the
low
utilization.
However,
over-reliance
on
highly
concentrated
K
+
inhibit
hydrogen
evolution
reaction
also
causes
(bi)carbonate
precipitation
interfere
with
catalytic
performance.
In
this
work,
under
screening
and
guidance
of
computational
simulations,
we
present
carbon
coated
tip-like
O
3
electrocatalyst
for
stable
efficient
acidic
synthesize
formic
acid
(HCOOH)
concentration.
The
layer
protects
oxidized
species
higher
intrinsic
activity
from
reductive
corrosion,
peripherally
formulates
tip-induced
electric
field
regulate
adverse
H
attraction
desirable
enrichment.
an
electrolyte
at
pH
0.94,
only
0.1
M
required
achieve
Faradaic
efficiency
(FE)
98.9%
300
mA
cm
−2
HCOOH
long-time
stability
over100
h.
By
up-scaling
electrode
into
25
electrolyzer
setup,
total
current
7
A
recorded
sustain
durable
production
291.6
mmol
L
−1
h
.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: Feb. 25, 2025
In
this
work,
the
Cu
single-atom
catalysts
(SACs)
supported
by
metal-oxides
(Al2O3-CuSAC,
CeO2-CuSAC,
and
TiO2-CuSAC)
are
used
as
theoretical
models
to
explore
correlations
between
electronic
structures
CO2RR
performances.
For
these
catalysts,
metal-support
interaction
(EMSI)
induced
charge
transfer
sites
supports
subtly
modulates
structure
form
different
highest
occupied-orbital.
The
occupied
3dyz
orbital
of
Al2O3-CuSAC
enhances
adsorption
strength
CO
weakens
C-O
bonds
through
3dyz-π*
electron
back-donation.
This
reduces
energy
barrier
for
C-C
coupling,
thereby
promoting
multicarbon
formation
on
Al2O3-CuSAC.
3dz2
TiO2-CuSAC
accelerates
H2O
activation,
lowers
reaction
forming
CH4.
over
activated
H2O,
in
turn,
intensifies
competing
hydrogen
evolution
(HER),
which
hinders
high-selectivity
production
CH4
TiO2-CuSAC.
CeO2-CuSAC
with
3dx2-y2
promotes
CO2
activation
its
localized
state
inhibits
coupling.
moderate
water
activity
facilitates
*CO
deep
hydrogenation
without
excessively
activating
HER.
Hence,
exhibits
Faradaic
efficiency
70.3%
at
400
mA
cm−2.
Rational
regulation
control
electroreduction
pathways
is
challenging.
Here,
authors
report
modulating
single-sites
via
interaction,
enabling
switchable
selectivity
multicarbons
methane.
