Catalysts,
Journal Year:
2024,
Volume and Issue:
15(1), P. 15 - 15
Published: Dec. 27, 2024
The
hydrogen
economy,
as
an
emerging
paradigm
for
sustainable
energy,
relies
on
efficient
oxidation
(HOR)
and
evolution
reactions
(HER).
These
require
effective
catalysts
to
enhance
reaction
kinetics
reduce
costs.
Platinum
(Pt)
is
widely
used
but
faces
issues
such
high
cost
CO
poisoning.
Non-precious
metal
catalysts,
particularly
Ni-based
alloys,
are
being
explored
viable
alternatives.
This
study
introduces
a
ternary
MoWNi
alloy
catalyst
synthesized
via
microwave-assisted
methods
annealing.
achieves
current
density
of
3.5
mA·cm−2
at
overpotential
100
mV
in
HOR
requires
only
25
reach
10
HER,
making
it
comparable
commercial
20%
Pt/C
catalysts.
Notably,
the
also
exhibits
superior
stability
resistance
toxicity.
findings
underscore
potential
advancing
hydrogen-based
energy
systems.
Nature Communications,
Journal Year:
2025,
Volume and Issue:
16(1)
Published: May 5, 2025
"Hydrogenation
by
crude
H2
-
dehydrogenation
to
produce
pure
H2"
strategy
using
liquid
organic
hydrogen
carriers
(LOHCs)
can
reduce
the
cost
and
shorten
process
of
purification
utilization.
The
critical
challenge
is
eliminate
catalyst
poisoning
CO
impurity
in
H2.
Here,
we
develop
a
Pd/α-MoC
that
enables
efficient
hydrogenation
N-LOHCs
under
feeds
(CO
concentration>5
vol%)
below
150
°C,
has
an
activity
1-2
orders
magnitude
higher
than
traditional
Pd-based
catalysts.
CO-resistant
also
successfully
conducted
models
industrial
including
CO,
CO2
CH4.
Water,
as
solvent,
contributes
greatly
against
poisoning,
since
utilization
low-temperature
water
gas
shift
(WGS)
reaction.
Moreover,
positive-charged
Pd
species
hinder
combination
H*
from
WGS
reaction
suppressed
undesirable
formation
release,
which
explains
substantial
improvement
performance
compared
Pt/α-MoC.
ACS Catalysis,
Journal Year:
2024,
Volume and Issue:
15(2), P. 869 - 876
Published: Dec. 28, 2024
The
development
of
active
and
anti-CO-poisoning
Pt-based
electrocatalysts
toward
an
alkaline
hydrogen
oxidation
reaction
(HOR)
is
highly
desirable
for
the
practical
application
anion
exchange
membrane
fuel
cells.
Herein,
we
report
synthesis
intermetallic
Pt
alloys
with
introduction
oxophilic
Sn
(including
Pt3Sn
PtSn),
significantly
boosting
HOR
performance
CO
tolerance.
Experimental
results
including
in
situ
surface-enhanced
infrared
absorption
spectroscopy
theoretical
calculations
unravel
that
d
band
centers
PtSn
are
notably
down
shift
due
to
Sn,
thereby
leading
decreased
adsorption
energy
both
CO,
which
together
enhanced
OH
species
on
sites
contribute
lowered
barrier
water
formation
oxidation.
As
expected,
obtained
present
improved
ability.
Specially,
depicts
three
times
specific
activity
four
mass
higher
than
Pt,
while
maintains
over
90%
after
poisoning.
Catalysts,
Journal Year:
2024,
Volume and Issue:
15(1), P. 15 - 15
Published: Dec. 27, 2024
The
hydrogen
economy,
as
an
emerging
paradigm
for
sustainable
energy,
relies
on
efficient
oxidation
(HOR)
and
evolution
reactions
(HER).
These
require
effective
catalysts
to
enhance
reaction
kinetics
reduce
costs.
Platinum
(Pt)
is
widely
used
but
faces
issues
such
high
cost
CO
poisoning.
Non-precious
metal
catalysts,
particularly
Ni-based
alloys,
are
being
explored
viable
alternatives.
This
study
introduces
a
ternary
MoWNi
alloy
catalyst
synthesized
via
microwave-assisted
methods
annealing.
achieves
current
density
of
3.5
mA·cm−2
at
overpotential
100
mV
in
HOR
requires
only
25
reach
10
HER,
making
it
comparable
commercial
20%
Pt/C
catalysts.
Notably,
the
also
exhibits
superior
stability
resistance
toxicity.
findings
underscore
potential
advancing
hydrogen-based
energy
systems.
