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.
SusMat,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 16, 2025
ABSTRACT
The
quest
for
dynamic
and
cost‐effective
electrocatalysts
to
substitute
carbon‐supported
platinum
(Pt)
in
alkaline
hydrogen
evolution
reaction
(HER)
remains
a
pressing
challenge.
incorporation
of
transition
metal
atoms
through
electron
donation
spin
regulation
dominates
the
HER
performance
Pt
nanoparticles.
Herein,
we
demonstrate
that
Co‐N
coordination
was
utilized
regulate
stabilize
chemical
microenvironment
nanoparticles
fabricate
hybrid
(Pt/CoNC).
resultant
Pt/CoNC
delivers
ultralow
overpotentials
15.2
171.2
mV
at
current
densities
10
100
mA
cm
−2
,
surpassing
commercial
Pt/C.
poisoning
tests,
where
η
values
depict
negative
shifts
161
13
by
potassium
thiocyanide
(KSCN)
ethylenediaminetetraacetic
acid
disodium
(EDTA),
suggest
combined
impact
on
HER,
with
playing
decisive
role.
magnetic
characterization
density
diagrams
reveal
induces
higher
state
Co
2+
creating
wider
spin‐related
channel
Pt.
Moreover,
effectively
modifies
electronic
structure
Pt,
thereby
reducing
energy
barriers
H
2
O
dissociation
(from
0.41
−0.22
eV)
generation
−0.35
0.03
eV).
This
finding
provides
insights
advanced
regulating
modulating
interfacial
transfer.
Journal of Materials Chemistry A,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
Pyridinic-N,
pyrrolic-N,
and
graphitic-N
fully
exploit
their
distinct
roles,
amplify
collective
influence
maximize
the
synergistic
interaction
between
Pt
NC,
ultimately
leading
to
exceptional
HER
performance
over
a
broad
pH
range.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 17, 2025
Abstract
Intermetallic
compounds
with
well‐ordered
crystal
structures
and
precise
stoichiometry
are
emerging
as
a
transformative
class
of
electrocatalysis.
Existing
reviews
have
primarily
focused
on
intermetallic
for
specific
electrocatalytic
reactions
or
their
synthesis
strategies,
while
comprehensive
perspective
how
ordered
contribute
to
performance
across
different
electrochemical
applications
that
share
similarity
remains
underexplored.
In
this
review,
the
recent
progress
is
examined
in
compounds,
particularly
focusing
structure–property‐performance
correlations
four
critical
small‐molecule
fuel
oxidation
reactions,
including
hydrogen
formic
acid
methanol
ethanol
reactions.
These
central
sustainable
fuel‐cell
technologies
due
high
theoretical
energy
densities,
relatively
benign
byproducts,
scalability
clean
production.
This
review
begins
by
highlighting
advantages
compound
nanocrystals
over
metal
alloys,
such
unique
structures,
exceptional
thermodynamic
stability,
enhanced
durability,
improved
intrinsic
activity,
optimized
distribution
active
sites,
scalability.
Subsequently,
these
comprehensively
discussed
detail.
concludes
an
outlook
future
directions
application
nanocrystals,
emphasizing
role
advancing
technologies.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(27), P. 35134 - 35142
Published: June 28, 2024
The
sluggish
kinetics
of
methanol
oxidation
reaction
(MOR)
and
poor
long-term
durability
catalysts
are
the
main
restrictions
large-scale
applications
direct
fuel
cells
(DMFCs).
Herein,
we
demonstrated
an
inspirational
ternary
Pt3Sn0.5Mn0.5/DMC
intermetallic
catalyst
that
reached
4.78
mA
cm–2
2.39
A
mg–1Pt
for
oxidation,
which
were
2.50/2.44
5.62/5.31
times
commercial
PtRu/C
Pt/C.
After
test,
presented
a
very
low
current
density
attenuation
(38.5%),
was
significantly
lower
than
those
(84.2%)
Pt/C
(93.1%).
Density
functional
theory
(DFT)
calculations
revealed
coregulation
Sn
Mn
altered
surface
electronic
structure
endowed
Pt3Sn0.5Mn0.5
with
selective
adsorption
Pt
CO
OH,
optimized
strength
intermediates
improved
MOR.
Beyond
offering
advanced
electrocatalyst,
this
study
provided
new
point
view
rational
design
superior
DMFC.
