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.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 5, 2025
Abstract
As
global
demand
for
clean
and
sustainable
energy
continues
to
rise,
fuel
cell
technology
has
seen
rapid
advancement.
However,
the
presence
of
trace
impurities
like
carbon
monoxide
(CO)
hydrogen
sulfide
(H₂S)
in
can
significantly
deactivate
anode
by
blocking
its
active
sites,
leading
reduced
performance.
Developing
electrocatalysts
that
are
resistant
CO
H₂S
poisoning
therefore
become
a
critical
priority.
This
paper
provides
comprehensive
analysis
mechanisms
reviews
key
strategies
developed
over
past
few
decades
enhance
impurity
tolerance
electrocatalysts.
It
begins
examining
differences
oxidation
reaction
(HOR)
acidic
alkaline
environments,
focusing
on
roles
binding
(HBE)
hydroxide
(OHBE).
Next,
it
outlines
three
main
approaches
mitigate
poisoning:
(I)
bifunctional
mechanisms,
(II)
direct
(III)
constructing
protective
layers.
The
review
then
shifts
countering
poisoning,
emphasizing
both
electrocatalyst
design
structural
improvements
cells.
Finally,
highlights
recent
advances
anti‐poisoning
electrocatalysts,
discusses
their
applications
limitations,
identifies
challenges
future
opportunities
further
research
this
field.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 2, 2025
Abstract
Atomically
dispersed
materials
have
been
a
thriving
research
field
due
to
their
maximum
atomic
utilization
and
remarkable
performance
in
energy
conversion
storage
systems.
Owing
the
large
radius,
strong
oxophilicity,
unique
electronic
properties,
rare‐earth
(RE)
elements
widely
investigated
as
oxide
carriers
promoters
atomically
manipulate
regulate
structure
of
active
species.
Single‐atom
state
with
an
adjustable
coordination
environment
on
N‐doped
carbon
endows
RE
metals
special
states
outstanding
catalytic
performances.
A
thorough
comprehension
modulation
mechanism
paves
way
for
construction
advanced
RE‐based
electrocatalysts
high
activity,
stability,
selectivity.
This
review
provides
widespread
insight
into
roles
modulating
properties
combined
structure–performance
relationship
electrocatalysis
processes.
The
characteristic
physical
chemical
are
highlighted,
synthetic
strategy
is
discussed.
Finally,
summary
perspectives
rational
design
development
highly
efficient
catalysts
proposed.
aims
provide
guideline
promoting
effective
functional
materials.
Crystals,
Journal Year:
2025,
Volume and Issue:
15(2), P. 129 - 129
Published: Jan. 24, 2025
Catalyst
poisoning
remains
a
persistent
barrier
to
the
efficiency
and
longevity
of
electrocatalytic
energy
conversion
devices,
namely
fuel
cells.
To
address
this
challenge,
review
provides
systematic
investigation
recent
advancements
in
mitigation
strategies,
with
particular
emphasis
on
surface
engineering,
alloying,
combined
approaches.
Notable
developments
include
rational
design
Pt-alloy
catalysts
enhanced
CO,
H2S,
H3PO4
tolerance
as
well
implementation
anti-poisoning
molecular
architectures
carbon-based
protective
layers.
These
methods
collectively
show
considerable
promise
for
improving
catalytic
activity
by
fine-tuning
electronic
structures
minimizing
interactions
undesired
adsorbates.
In
addition
presenting
comprehensive
overview
current
progress,
identifies
promising
future
directions,
guiding
realization
robust,
poison-tolerant
crucial
sustainable
technologies.
Journal of the American Chemical Society,
Journal Year:
2025,
Volume and Issue:
147(6), P. 5398 - 5407
Published: Jan. 31, 2025
Anion-exchange
membrane
fuel
cell
(AEMFC)
is
a
cost-effective
hydrogen-to-electricity
conversion
technology
under
zero-emission
scenario.
However,
the
sluggish
kinetics
of
anodic
hydrogen
oxidation
reaction
(HOR)
impedes
commercial
implementation
AEMFCs.
Here,
we
develop
Pd
single-atom-embedded
Ni3N
catalyst
(Pd1/Ni3N)
with
unconventional
Pd1Ni2
trimer
sites
to
drive
efficient
and
durable
HOR
in
alkaline
media.
Integrating
theoretical
experimental
analyses,
demonstrate
that
dual
achieve
"*H
on
Pd1Ni2-HV
+
*OH
Pd1Ni2-HN"
adsorption
mode,
effectively
weakening
overstrong
*H
adsorptions
pristine
Ni3N.
Owing
unique
coordination
mode
atomically
dispersed
catalytic
sites,
resulting
Pd1/Ni3N
delivers
high
intrinsic
mass
activity
together
excellent
antioxidation
capability
CO
tolerance.
Specifically,
reaches
7.54
A
mgPd-1
at
overpotential
50
mV.
The
AEMFC
employing
as
anode
displays
power
density
31.7
W
an
ultralow
precious
metal
loading
only
0.023
mgPd
cm-2.
This
study
provides
guidance
for
design
high-performance
atomic
level.
Journal of Chemical Research,
Journal Year:
2025,
Volume and Issue:
49(1)
Published: Jan. 1, 2025
Small
molecules
such
as
dihydrogen
(H
2
),
carbon
dioxide
(CO
and
dinitrogen
(N
)
are
ubiquitous
in
nature
have
important
industrial
environmental
applications.
This
review
article
discusses
the
activation
of
these
small
utilizing
transition
metal
complexes
because
transformation
into
value
added
products
is
a
topic
current
research
due
to
economic
importance.
The
also
interesting
interaction
between
with
their
mechanisms,
formation
hydride
for
H
,
formate
CO
ammonia
production
from
N
.
compounds
using
recently
considered
more
affordable
method
synthesizing
new
organic
through
catalytic
processes.
Therefore,
this
aspires
provide
insights
boosting
complex
design
improved
reactivity
greater
practicality
situations
by
combining
most
recent
knowledge.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 6, 2025
Ruthenium
(Ru)
is
a
more
cost-effective
alternative
to
platinum
anode
catalysts
for
alkaline
anion-exchange
membrane
fuel
cells
(AEMFCs),
but
suffers
from
severe
competitive
adsorption
of
hydrogen
(Had)
and
hydroxyl
(OHad).
To
address
this
concern,
strongly
coupled
multisite
electrocatalyst
with
highly
active
cluster-scale
ruthenium-tungsten
oxide
(Ru-WOx)
interface,
which
could
eliminate
the
phenomenon
achieve
high
coverage
OHad
Had
at
Ru
WOx
domains,
respectively,
designed.
The
experimental
theoretical
results
demonstrate
that
domain
functions
as
proton
sponge
perpetually
accommodate
activated
species
spillover
adjacent
domain,
resulting
WO-Had
are
readily
Ru-OHad
heterointerface
finish
oxidation
reaction
faster
kinetics
via
thermodynamically
favorable
Tafel-Volmer
mechanism.
AEMFC
delivers
peak
power
density
1.36
W
cm-2
low
catalyst
loading
0.05
mgRu
outstanding
durability
(negligible
voltage
decay
over
80-h
operation
500
mA
cm-2).
This
work
offers
completely
new
insights
into
understanding
HOR
mechanism
designing
advanced
AEMFCs.
