Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 17, 2024
Abstract
Despite
the
advantage
of
high
carbon
utilization,
CO
2
electroreduction
(CO
ER)
in
acid
is
challenged
by
competitive
hydrogen
evolution
reaction
(HER).
Designing
confined
catalysts
a
promising
strategy
to
suppress
HER
and
boost
ER,
yet
relationship
between
structure
catalytic
performance
remains
unclear,
limiting
rational
design.
Herein,
using
Cu
O@mesoporous
SiO
core‐shell
as
well‐defined
platform,
volcano‐shaped
found
thickness
mesoporous
layer
productivity
multicarbon
(C
2+
)
products
electroreduction.
The
optimal
shell
15
nm
identified,
with
situ
spectroscopies
theoretical
simulations
attributing
this
trade‐off
local
alkalinity
concentration,
arising
from
nanoconfinement
effect.
At
thickness,
O@
catalyst
achieves
C
Faradaic
efficiency
83.1%
±
2.5%
partial
current
density
687.8
mA
cm
−2
acidic
electrolytes,
exceeding
most
reported
catalysts.
This
work
provides
valuable
insights
for
design
electrocatalysis.
Advanced Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 27, 2025
Abstract
The
electrocatalytic
conversion
of
CO
2
into
valuable
multi‐carbon
(C
2+
)
products
using
Cu‐based
catalysts
has
attracted
significant
attention.
This
review
provides
a
comprehensive
overview
recent
advances
in
catalyst
design
to
improve
C
selectivity
and
operational
stability.
It
begins
with
an
analysis
the
fundamental
reaction
pathways
for
formation,
encompassing
both
established
emerging
mechanisms,
which
offer
critical
insights
design.
In
situ
techniques,
essential
validating
these
by
real‐time
observation
intermediates
material
evolution,
are
also
introduced.
A
key
focus
this
is
placed
on
how
enhance
through
manipulation,
particularly
emphasizing
catalytic
site
construction
promote
C─C
coupling
via
increasing
*
coverage
optimizing
protonation.
Additionally,
challenge
maintaining
activity
under
conditions
discussed,
highlighting
reduction
active
charged
Cu
species
materials
reconstruction
as
major
obstacles.
To
address
these,
describes
strategies
preserve
sites
control
including
novel
utilization
mitigation
reconstruction.
By
presenting
developments
challenges
ahead,
aims
guide
future
conversion.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 12, 2024
Abstract
The
era
of
an
energy
economy
driven
by
“carbon
neutrality”
is
putting
forward
stricter
requirements
for
the
use
carbon
resources
and
governance
CO
2
.
Electrochemical
reduction
dioxide
reaction
(CO
RR),
renewable
energy,
a
practical
storage
technology
with
broad
application
prospects.
It
can
reduce
into
carbon‐based
fuels
chemical
products.
Among
them,
multi‐carbon
(C
2+
)
products
have
higher
density
larger
market
size,
significantly
global
demand
fossil
close
artificial
cycle.
Introducing
additional
active
sites
Cu‐based
catalysts
to
prepare
dual‐site
tandem
regulate
electronic
geometric
structure
catalysts,
break
linear
scale
relationships,
potential
barriers,
bring
superb
stable
catalytic
performance.
Various
types
are
developed,
understanding
effect
pushed
level.
This
paper
reviews
several
typical
catalysts:
atom–atom
atom‐particle
particle–particle
heterogeneous
interface
catalysts.
then
deeply
analyzes
mechanism
research
progress
these
advanced
in
RR.
In
addition,
challenges
opportunities
faced
such
also
discussed.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 3, 2025
Glycine
plays
a
crucial
role
in
various
industrial
and
daily
applications.
However,
traditional
synthesis
methods
are
often
associated
with
high
toxicity,
energy
intensity,
inefficiency.
This
study
introduces
an
efficient
eco-friendly
method
for
synthesizing
glycine
via
the
reductive
coupling
of
oxalic
acid
nitrate
using
Bi
metal
catalyst,
enhanced
by
lattice
strain
from
oxide
composites
undergoing
electrochemical
transformation.
At
applied
potential
-0.76
V
versus
reversible
hydrogen
electrode
(RHE),
catalyst
achieves
impressive
Faradaic
efficiency
(FE)
79.1%,
yielding
record
concentration
0.17
m,
substantially
higher
than
conventional
Bi-based
systems.
Furthermore,
introduction
glycolaldehyde
hydroxylamine
as
reactants
raise
FE
to
91.3%
production
rate
2433.3
µmol
h-1
under
identical
conditions.
Electrochemical
analysis
theoretical
calculations
demonstrate
that
expansion
notably
boosts
facilitating
NH2OH
formation
promoting
reduction
oxime
intermediates.
These
results
underscore
significance
engineering
enhancing
active
site
performance
accelerating
reaction
kinetics,
offering
sustainable
alternative
methods.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 6, 2025
Abstract
Designing
advanced
electrodes
with
efficient
contact
gas,
electrolytes,
and
catalysts
presents
significant
opportunities
to
enhance
the
accessibility
of
concentrated
gas
molecules
catalytic
sites
while
mitigating
undesirable
side
reactions
such
as
hydrogen
evolution
reaction
(HER),
which
advances
gas‐phase
electrochemical
reduction
toward
industrial‐scale
applications.
Traditional
planar
face
challenges,
including
limited
solubility
restricted
mass
transport.
Although
commercial
flow‐by
gas‐diffusion
can
reduce
transfer
resistance
by
enabling
direct
diffusion
active
sites,
reliance
on
diffusive
flow
becomes
insufficient
meet
rapid
consumption
demands
reactants
at
high
current
density.
Flow‐through
hollow
fiber
(HFGDEs)
or
penetration
(HFGPEs)
provide
a
promising
solution
continuously
delivering
convective
resulting
in
enhanced
transport
superior
near
sites.
Notably,
HFGDEs
have
demonstrated
ability
achieve
densities
exceeding
multiple
amperes
per
square
centimeter
liquid
electrolytes.
This
review
provides
comprehensive
overview
design
criteria,
fabrication
methods,
strategies
for
porous
metallic
HFGDEs.
It
highlights
state‐of‐the‐art
advancements
composed
various
metals
(e.g.,
Cu,
Ni,
Ag,
Bi,
Ti,
Zn),
particular
focus
their
utilization
conversion
CO
2
.
Finally,
future
research
directions
are
discussed,
underscoring
potential
versatile
scalable
electrode
architecture
diverse
