Synergistic Teamwork of Non-Noble Metals: The Design of Active and Robust Intermetallic Compounds for Hydrogen Evolution Reaction in Industrial Alkaline Water Electrolysis
Kai Wei,
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Liwen Cao,
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Ziqing Li
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et al.
Inorganic Chemistry,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 10, 2025
In
this
work,
we
have
demonstrated
a
double-boosting
strategy
that
can
significantly
enhance
the
stability
of
hydrogen
evolution
reaction
(HER)
for
non-noble-metal-based
electrocatalysts
operating
in
harsh
industrial
conditions
(6.0
M
KOH,
343
K).
With
incorporation
early-transition-metal
and
main-group
elements
Ni
metal,
ternary
TiAlNi2
TiNi2Sn
both
exhibit
higher
robust
durability
HER
than
binary
AlNi
metal
due
to
strong
bonding
states
Ti-Ni
Al/Sn-Ni
below
Fermi
level.
Additionally,
they
display
remarkable
efficiency,
which
only
overpotentials
ca.
-22
-67
mV
are
required
reach
current
density
10
mA/cm2
(η10)
1.0
KOH.
Theoretical
calculation
revealed
their
outstanding
activities
(outperforming
commercial
Pt/C,
Pt
=
5
wt
%,
η10
-76
mV)
be
attributed
synergistic
teamwork
among
Ti,
Ni,
Al/Sn
elements.
The
at
500
much
smaller
foam.
More
importantly,
show
steady
performances
over
period
400
h
high
(400
mA/cm2)
conditions.
Language: Английский
Oxygen vacancy engineering of core-shelled Nickel-Molybdenum dioxide nanoparticles doped by Ruthenium atoms for overall anion exchange membrane water electrolysis
Journal of Colloid and Interface Science,
Journal Year:
2025,
Volume and Issue:
695, P. 137754 - 137754
Published: May 1, 2025
Language: Английский
In Situ Formation of Multi-Principal Element Oxide on a Bulk Nanoporous Intermetallic Alloy for Ultra-Efficient Hydrogen Production at Ampere-Level Current Density
ACS Applied Materials & Interfaces,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 21, 2025
Developing
highly
efficient
and
durable
electrocatalysts
for
hydrogen
production
via
water
splitting
remains
a
pivotal
challenge
sustainable
energy.
In
this
work,
we
present
bulk
nanoporous
C15
intermetallic
alloy
synthesized
through
electrodealloying
of
eutectic
multiprincipal
element
precursor.
Unlike
conventional
metallic
nanostructures,
catalyst
features
an
ultrathin
oxide
(MPEO)
layer,
which
generates
abundant
active
sites
achieves
exceptional
evolution
reaction
(HER)
activity,
surpassing
most
reported
catalysts.
Crucially,
the
material
demonstrates
unprecedented
stability
at
industrial-level
current
densities
(1
A/cm2
396
mV),
enabled
by
operando
amorphization
MPEO
layer
during
prolonged
operation.
This
structural
stabilizes
catalyst-electrolyte
interface
while
retaining
intrinsic
activity.
Our
findings
redefine
design
principles
robust,
high-performance
integrating
architectures
with
self-optimizing
surface
chemistry.
Language: Английский