eScience,
Год журнала:
2024,
Номер
4(4), С. 100230 - 100230
Опубликована: Янв. 10, 2024
The
usage
of
cheap
crude
H2
in
proton-exchange
membrane
fuel
cells
(PEMFCs)
is
still
unrealistic
to
date,
due
the
suffering
current
Pt
based
nano-catalysts
from
impurities
such
as
CO
anode.
Recently,
synergistic
active
sites
between
single
atom
(SA)
and
nanoparticle
(NP)
have
been
found
be
promising
for
overcoming
poisoning
problem.
However,
lengthening
nanoparticle-single
(SA-NP)
interface,
i.e.,
constructing
high
density
sites,
remains
highly
challenging.
Herein,
we
present
a
new
strategy
on
molecular
fusion
create
abundant
SA-NP
interfaces,
with
interfaces
created
2D
nitrogen
doped
carbon
nanosheets
(Ir-SACs&NPs/NC).
Owing
abundance
interface
catalyst
was
empowered
tolerance
towards
up
1000
ppm
feed.
These
findings
provide
guidelines
design
construction
anti-poisoning
catalysts
PEMFC
ACS Nano,
Год журнала:
2024,
Номер
18(33), С. 21651 - 21684
Опубликована: Авг. 12, 2024
In
order
to
facilitate
electrochemical
oxygen
reactions
in
electrically
rechargeable
zinc-air
batteries
(ZABs),
there
is
a
need
develop
innovative
approaches
for
efficient
electrocatalysts.
Due
their
reliability,
high
energy
density,
material
abundance,
and
ecofriendliness,
ZABs
hold
promise
as
next-generation
storage
conversion
devices.
However,
the
large-scale
application
of
currently
hindered
by
slow
kinetics
reduction
reaction
(ORR)
evolution
(OER).
development
heterostructure-based
electrocatalysts
has
potential
surpass
limitations
imposed
intrinsic
properties
single
material.
This
Account
begins
with
an
explanation
configurations
fundamentals
electrochemistry
air
electrode.
Then,
we
summarize
recent
progress
respect
variety
heterostructures
that
exploit
bifunctional
electrocatalytic
overview
impact
on
ZAB
performance.
The
range
heterointerfacial
engineering
strategies
improving
ORR/OER
performance
includes
tailoring
surface
chemistry,
dimensionality
catalysts,
interfacial
charge
transfer,
mass
transport,
morphology.
We
highlight
multicomponent
design
take
these
features
into
account
create
advanced
highly
active
catalysts.
Finally,
discuss
challenges
future
perspectives
this
important
topic
aim
enhance
activity
batteries.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Май 8, 2024
Abstract
The
“terminal
hydroxyl
group
anchoring
mechanism”
has
been
studied
on
metal
oxides
(Al
2
O
3
,
CeO
)
as
well
a
variety
of
noble
and
transition
metals
(Ag,
Pt,
Pd,
Cu,
Ni,
Fe,
Mn,
Co)
in
number
generalized
studies,
but
there
is
still
gap
how
to
regulate
the
content
terminal
groups
influence
dispersion
active
species
thus
achieve
optimal
catalytic
performance.
Herein,
we
utilized
AlOOH
precursor
for
γ-Al
induced
transformation
exposed
crystal
face
from
(110)
(100)
by
controlling
calcination
temperature
generate
more
anchor
Ag
species.
Experimental
results
combined
with
AIMD
DFT
show
that
can
drive
atomic
rearrangement
face,
thereby
forming
structure
similar
arrangement
face.
This
resulted
formation
during
high-temperature
support
(Al-900),
which
capture
form
single-atom
dispersions,
ultimately
develop
stable
efficient
Ag-based
catalyst.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 10, 2025
Abstract
The
local
electrolyte
micro‐environment
surrounding
the
catalyst
reaction
center,
including
critical
factors
such
as
pH,
reactant
concentration,
and
electric
field,
plays
a
decisive
role
in
electrocatalytic
reactions
water
splitting.
Recently,
this
topic
has
garnered
significant
attention
due
to
its
potential
significantly
enhance
catalytic
performance.
While
various
strategies
optimize
processes
have
been
explored,
deliberate
control
over
fundamental
principles
guiding
these
adjustments
remain
their
early
stages
of
development.
This
review
provides
comprehensive
examination
key
efforts
aimed
at
designing
tailoring
localized
micro‐environments
improve
It
discusses
advances
micro‐environmental
design,
methodologies
for
evaluating
shifts,
mechanistic
insights
driving
developments.
Additionally,
highlights
existing
challenges
prospective
industrial
applications
strategies.
By
offering
detailed
analysis
recent
developments,
aims
equip
researchers
with
practical
knowledge
on
controlling
micro‐environments,
thereby
accelerating
progress
toward
real‐world
processes.
Advanced Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 30, 2025
Abstract
Oxygen
reductions
and
evolution
reactions
(ORR/OER)
are
pivotal
electrochemical
processes
in
fuel
cells
metal‐air
batteries,
yet
the
rapid,
large‐scale
production
of
efficient
ORR/OER
electrocatalysts
remains
challenging.
Herein,
a
groundbreaking
microwave‐synthesis
strategy
is
presented
that
enables
rapid
facile
preparation
kilogram‐scale
electrocatalysts.
The
unique
microwave
irradiation
generates
instantaneous
thermal
energy,
facilitating
formation
nano‐carbon
bridges
interconnect
high‐density
active
sites
comprising
cobalt
single
atoms
nanoparticles.
This
innovative
architectural
configuration
significantly
enhances
kinetics
electron/mass
transfer
maximizing
accessibility
sites.
optimized
carbon‐bridged
catalyst
(CBCo‐800)
demonstrates
commendable
half‐wave
potential
(
E
1/2
)
0.86
V
versus
RHE
minimal
overpotential
difference
(Δ
0.696
V.
Furthermore,
lab‐assembled
zinc‐air
battery
utilizing
CBCo‐800
achieved
great
specific
capacity
794
mAh
g
−1
sustained
over
650
h,
outperforming
commercial
Pt/C
RuO
2
catalysts.
Density
functional
theory
(DFT)
calculations
elucidate
nanocarbon
bridge
between
dual‐active
boosts
oxygen
activation
optimizes
adsorption/desorption
dynamics
*OH/*OOH
intermediates,
thereby
lowering
energy
barriers
for
ORR/OER.
study
offers
solution
producing
site
materials,
also
establishes
robust
platform
mass
high‐performance
Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 28, 2023
Supported
nanoparticles
have
attracted
considerable
attention
as
a
promising
catalyst
for
achieving
unique
properties
in
numerous
applications,
including
fuel
cells,
chemical
conversion,
and
batteries.
Nanocatalysts
demonstrate
high
activity
by
expanding
the
number
of
active
sites,
but
they
also
intensify
deactivation
issues,
such
agglomeration
poisoning,
simultaneously.
Exsolution
bottom-up
synthesis
supported
has
emerged
breakthrough
technique
to
overcome
limitations
associated
with
conventional
nanomaterials.
Nanoparticles
are
uniformly
exsolved
from
perovskite
oxide
supports
socketed
into
support
one-step
reduction
process.
Their
uniformity
stability,
resulting
structure,
play
crucial
role
development
novel
nanocatalysts.
Recently,
tremendous
research
efforts
been
dedicated
further
controlling
exsolution
particles.
To
effectively
address
at
more
precise
level,
understanding
underlying
mechanism
is
essential.
This
review
presents
comprehensive
overview
mechanism,
focus
on
its
driving
force,
processes,
properties,
synergetic
strategies,
well
new
pathways
optimizing
nanocatalysts
diverse
applications.
Abstract
Conductive
metal–organic
frameworks
(MOFs)
are
a
type
of
porous
material.
It
consists
metal
ions
coordinated
with
highly
conjugated
organic
ligands.
The
high
density
carriers
and
orbital
overlap
contribute
to
the
amazing
conductivity.
Additionally,
conductive
MOFs
inherit
advantages
large
specific
surface
area,
structural
diversity,
adjustable
pore
size
from
MOFs.
These
excellent
properties
have
attracted
many
researchers
explore
controllable
synthesis
electrochemical
applications
over
past
decade.
This
work
provides
an
overview
recent
advances
in
strategies
highlights
their
electrocatalysis,
supercapacitors,
sensors,
batteries.
Finally,
challenges
faced
by
application
discussed,
as
well
views
on
promising
solutions
for
them
presented.
Energy & Environmental Science,
Год журнала:
2023,
Номер
16(12), С. 5663 - 5687
Опубликована: Янв. 1, 2023
This
review
summarizes
recent
progress
and
prospects
of
catalysts
containing
metal
single-atom
(M
1
)
nano-aggregates
(MNAs,
particles
or
clusters),
which
promise
to
combine
the
merits
SACs
MNA-based
for
efficient
electrocatalysis.
