Inorganic Chemistry,
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 24, 2024
Compared
to
Pt/C,
the
atomic
ordered
Pt-based
intermetallic
compounds
can
deliver
higher
efficiency
and
reliable
stability,
they
are
considered
one
of
ideal
cathode
catalysts
for
next
generation
fuel
cells.
This
work
proposed
a
simple
ferrocene
atmosphere
annealing
method
improve
commercial
Pt/C
convert
Pt
L10-PtFe.
After
further
acid
etching
treatment,
obtained
carbon-supported
Pt-skin
L10-PtFe
(Pt-skin
L10-PtFe/C)
with
superfine
particle
size
(∼3.3
nm)
not
only
was
highly
dispersed
on
carbon
but
possesses
thin
skin,
like
armor
As
excepted,
ORR
activity
L10-PtFe/C
(0.375
A
mg–1;
0.921
mA
cm–2)
is
far
better
than
that
(0.121
0.260
cm–2),
its
stability
also
greatly
improved.
Our
gas–solid
reaction
straightforward
has
great
potential
in
producing
large
scale.
Chemical Reviews,
Journal Year:
2023,
Volume and Issue:
123(22), P. 12507 - 12593
Published: Nov. 1, 2023
Electrocatalysis
underpins
the
renewable
electrochemical
conversions
for
sustainability,
which
further
replies
on
metallic
nanocrystals
as
vital
electrocatalysts.
Intermetallic
have
been
known
to
show
distinct
properties
compared
their
disordered
counterparts,
and
long
explored
functional
improvements.
Tremendous
progresses
made
in
past
few
years,
with
notable
trend
of
more
precise
engineering
down
an
atomic
level
investigation
transferring
into
practical
membrane
electrode
assembly
(MEA),
motivates
this
timely
review.
After
addressing
basic
thermodynamic
kinetic
fundamentals,
we
discuss
classic
latest
synthetic
strategies
that
enable
not
only
formation
intermetallic
phase
but
also
rational
control
other
catalysis-determinant
structural
parameters,
such
size
morphology.
We
demonstrate
emerging
nanomaterials
potentially
advancement
energy
electrocatalysis.
Then,
state-of-the-art
characterizations
representative
electrocatalysts
emphasis
oxygen
reduction
reaction
evaluated
a
MEA
setup.
summarize
review
by
laying
out
existing
challenges
offering
perspective
future
research
directions
toward
practicing
conversions.
Nano-Micro Letters,
Journal Year:
2024,
Volume and Issue:
16(1)
Published: July 9, 2024
Combining
single
atoms
with
clusters
or
nanoparticles
is
an
emerging
tactic
to
design
efficient
electrocatalysts.
Both
synergy
effect
and
high
atomic
utilization
of
active
sites
in
the
composite
catalysts
result
enhanced
electrocatalytic
performance,
simultaneously
provide
a
radical
analysis
interrelationship
between
structure
activity.
In
this
review,
recent
advances
single-atomic
site
coupled
are
emphasized.
Firstly,
synthetic
strategies,
characterization,
dynamics
types
clusters/nanoparticles
introduced,
then
key
factors
controlling
discussed.
Next,
several
clean
energy
catalytic
reactions
performed
over
synergistic
illustrated.
Eventually,
encountering
challenges
recommendations
for
future
advancement
energy-transformation
electrocatalysis
outlined.
Nano Letters,
Journal Year:
2024,
Volume and Issue:
24(13), P. 3961 - 3970
Published: March 25, 2024
Developing
a
high-performance
membrane
electrode
assembly
(MEA)
poses
formidable
challenge
for
fuel
cells,
which
lies
in
achieving
both
high
metal
loading
and
efficient
catalytic
activity
concurrently
MEA
catalysts.
Here,
we
introduce
porous
Co@NC
carrier
to
synthesize
sub-4
nm
PtCo
intermetallic
nanocrystals,
an
impressive
Pt
of
27
wt
%.
The
PtCo–CoNC
catalyst
demonstrates
exceptional
remarkable
stability
the
oxygen
reduction
reaction.
Advanced
characterization
techniques
theoretical
calculations
emphasize
synergistic
effect
between
alloys
single
Co
atoms,
enhances
desorption
OH*
intermediate.
Furthermore,
PtCo–CoNC-based
cathode
delivers
power
density
1.22
W
cm–2
test
owing
enhanced
mass
transport,
is
verified
by
simulation
results
O2
distributions
current
inside
layer.
This
study
lays
groundwork
design
catalysts
with
practical
applications
cells.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(32)
Published: June 3, 2024
Abstract
There
is
notable
progress
in
the
development
of
efficient
oxygen
reduction
electrocatalysts,
which
are
crucial
components
fuel
cells.
However,
these
superior
activities
limited
by
imbalanced
mass
transport
and
cannot
be
fully
reflected
actual
cell
applications.
Herein,
design
concepts
tracks
platinum
(Pt)‐nanocarbon
hybrid
catalysts,
aiming
to
enhance
performance
both
cathodic
electrocatalysts
cells,
presented.
This
review
commences
with
an
introduction
Pt/C
highlighting
diverse
architectures
developed
date,
particular
emphasis
on
heteroatom
modification
microstructure
construction
functionalized
nanocarbons
based
integrated
concepts.
discussion
encompasses
structural
evolution,
property
enhancement,
catalytic
mechanisms
Pt/C‐based
including
rational
preparation
recipes,
activity,
strong
stability,
robust
metal‐support
interactions,
adsorption
regulation,
synergistic
pathways,
confinement
strategies,
ionomer
optimization,
permission,
multidimensional
construction,
reactor
upgrading.
Furthermore,
this
explores
low‐barrier
or
barrier‐free
exchange
interfaces
channels
achieved
through
impressive
Pt‐nanocarbon
goal
optimizing
efficiency.
In
conclusion,
outlines
challenges
associated
catalysts
provides
perspectives
future
trends
cells
beyond.
Langmuir,
Journal Year:
2023,
Volume and Issue:
40(6), P. 3117 - 3124
Published: Dec. 29, 2023
Various
efficient
strategies
have
been
developed
to
overcome
the
anodic
electrocatalyst
issue
of
methanol-based
fuel
cells
owing
their
complicated
methanol
electrooxidation
mechanism.
In
this
work,
PtCo
nanoparticles
with
adjustable
compositions
supported
on
multiwalled
carbon
nanotubes
(Pt1Cox/MWCNTs)
through
adsorbing–coating–annealing–etching
route
were
synthesized.
Compared
Pt/C
catalyst,
Pt1Co3/MWCNTs
exhibit
better
electrocatalytic
MOR
activity
in
both
and
durability.
Notably,
electrochemical
mass
specific
as-prepared
catalyst
are
1.04
mA
μg–1Pt
2.18
cm–2,
respectively,
which
higher
than
those
catalyst.
Moreover,
sample
revealed
lower
onset
potential
during
CO
stripping
test.
Furthermore,
possess
a
current
density
decrease
rate
chronoamperometry
cyclic
durability
tests.
The
enhancement
stability
could
be
ascribed
ordered
morphological
structure,
electronic
interaction
between
MWCNTs
nanoparticles,
suitable
structure
effect
Pt/Co
ratios.
concept
design
study
offers
different
guideline
for
constructing
novel
will
accelerate
widespread
cell
practical
application.
