ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(19), P. 18688 - 18705
Published: Sept. 19, 2023
Electrochemical
CO2
reduction
(ECO2R)
with
renewable
electricity
is
an
advanced
carbon
conversion
technology.
At
present,
copper
the
only
metal
to
selectively
convert
into
multicarbon
(C2+)
products.
Among
them,
atomically
dispersed
(AD)
Cu
catalysts
have
received
great
attention
due
relatively
single
chemical
environment,
which
are
able
minimize
negative
impact
of
morphology,
valence
state,
and
crystallographic
properties,
etc.
on
product
selectivity.
Furthermore,
completely
exposed
atomic
sites
not
provide
space
bonding
electrons
for
adsorption
reactants
in
favor
better
catalytic
activity
but
also
ideal
platform
studying
its
reaction
mechanism.
This
review
summarizes
recent
progress
AD
as
a
chemically
tunable
ECO2R,
including
dynamic
evolution,
performance,
prospects
challenges
ECO2R
carefully
discussed.
We
sincerely
hope
that
this
can
contribute
rational
design
enhanced
performance
ECO2R.
Advanced Functional Materials,
Journal Year:
2022,
Volume and Issue:
33(4)
Published: Nov. 28, 2022
Abstract
The
development
of
highly
efficient
robust
electrocatalysts
with
low
overpotential
and
industrial‐level
current
density
is
great
significance
for
CO
2
electroreduction
(CO
ER),
however
the
proton
transport
rate
during
ER
remains
a
challenge.
Herein,
porous
N‐doped
carbon
nanofiber
confined
tin‐nitrogen
sites
(Sn/NCNFs)
catalyst
developed,
which
prepared
through
an
integrated
electrospinning
pyrolysis
strategy.
optimized
Sn/NCNFs
exhibits
outstanding
activity
maximum
FE
96.5%,
onset
potential
−0.3
V,
small
Tafel
slope
68.8
mV
dec
−1
.
In
flow
cell,
partial
100.6
mA
cm
−2
achieved.
situ
spectroscopic
analysis
unveil
isolated
SnN
site
acted
as
active
center
accelerating
water
dissociation
subsequent
process,
thus
promoting
formation
intermediate
*COOH
in
rate‐determining
step
ER.
Theoretical
calculations
validate
pyrrolic
N
atom
adjacent
to
species
assisted
reducing
energy
barrier
formation,
boosting
kinetics.
A
Zn‐CO
battery
designed
cathode
Sn/NCNFs,
delivers
power
1.38
mW
long‐term
stability.
Chemical Synthesis,
Journal Year:
2022,
Volume and Issue:
2(4), P. 19 - 19
Published: Jan. 1, 2022
The
emission
of
CO2
has
become
an
increasingly
prominent
issue.
Electrochemical
reduction
to
value-added
chemicals
provides
a
promising
strategy
mitigate
energy
shortage
and
achieve
carbon
neutrality.
Two-dimensional
(2D)
materials
are
highly
attractive
for
the
fabrication
catalysts
owing
their
special
electronic
geometric
properties
as
well
multitude
edge
active
sites.
Various
2D
have
been
proposed
synthesis
use
in
conversion
versatile
carbonous
products.
This
review
presents
latest
progress
on
various
with
focus
applications
electrochemical
CO2.
Initially,
advantages
electro-reduction
briefly
discussed.
Subsequently,
common
methods
role
these
elaborated.
Finally,
some
perspectives
future
investigations
proposed.
Angewandte Chemie International Edition,
Journal Year:
2023,
Volume and Issue:
62(49)
Published: Oct. 25, 2023
Constructing
Cu
single-atoms
(SAs)
catalysts
is
considered
as
one
of
the
most
effective
strategies
to
enhance
performance
electrochemical
reduction
CO2
(e-CO2
RR)
towards
CH4
,
however
there
are
challenges
with
activity,
selectivity,
and
a
cumbersome
fabrication
process.
Herein,
by
virtue
meta-position
structure
alkynyl
in
1,3,5-triethynylbenzene
interaction
between
-C≡C-,
SAs
electrocatalyst
(Cu-SAs/HGDY),
containing
low-coordination
Cu-C2
active
sites,
was
synthesized
through
simple
efficient
one-step
method.
Notably,
this
represents
first
achievement
preparing
coordination
structure,
which
exhibited
high
-to-CH4
selectivity
(72.1
%)
partial
current
density
230.7
mA
cm-2
turnover
frequency
2756
h-1
dramatically
outperforming
currently
reported
catalysts.
Comprehensive
experiments
calculations
verified
not
only
endowed
center
more
positive
electricity
but
also
promoted
formation
H•,
contributed
outstanding
e-CO2
RR
electrocatalytic
Cu-SAs/HGDY.
Our
work
provides
novel
H⋅-transferring
mechanism
for
offers
protocol
preparation
two-coordinated
ACS Nano,
Journal Year:
2023,
Volume and Issue:
17(19), P. 18688 - 18705
Published: Sept. 19, 2023
Electrochemical
CO2
reduction
(ECO2R)
with
renewable
electricity
is
an
advanced
carbon
conversion
technology.
At
present,
copper
the
only
metal
to
selectively
convert
into
multicarbon
(C2+)
products.
Among
them,
atomically
dispersed
(AD)
Cu
catalysts
have
received
great
attention
due
relatively
single
chemical
environment,
which
are
able
minimize
negative
impact
of
morphology,
valence
state,
and
crystallographic
properties,
etc.
on
product
selectivity.
Furthermore,
completely
exposed
atomic
sites
not
provide
space
bonding
electrons
for
adsorption
reactants
in
favor
better
catalytic
activity
but
also
ideal
platform
studying
its
reaction
mechanism.
This
review
summarizes
recent
progress
AD
as
a
chemically
tunable
ECO2R,
including
dynamic
evolution,
performance,
prospects
challenges
ECO2R
carefully
discussed.
We
sincerely
hope
that
this
can
contribute
rational
design
enhanced
performance
ECO2R.
