ChemSusChem,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 18, 2024
Abstract
Hydrogen,
as
an
important
clean
energy
source,
plays
a
more
and
crucial
role
in
decarbonizing
the
planet
meeting
global
climate
challenge
due
to
its
high
density
zero‐emission.
The
demand
for
sustainable
hydrogen
is
increasing
drastically
worldwide
driven
by
shift
towards
low‐carbon
solutions.
Thermochemical
catalysis
process
dominates
production
at
scale
given
relatively
mature
technology
commercialization
status,
well
established
manufacturing
infrastructure.
While
environmentally
friendly
nature
growing
abundant
sources
of
renewable
electricity,
electrochemical
path
rising
major
alternative
thermochemical
means.
Nevertheless,
hierarchically
structured
catalysts
devices
have
gradually
taken
center
stage
toward
replacing
traditional
counterparts,
especially
with
rapid
advancement
design
manufacture
such
ordered
nanostructure
assemblies
activity,
efficient
mass
transport,
superb
stability.
In
this
review,
latest
progress
been
surveyed
on
electro‐
thermo‐
chemical
pathways
comparatively.
It
covers
structure
designs
atomic
dispersion,
nanoscale
surfaces
interfaces
achieving
highly
active
durable
catalysts,
components,
devices.
Both
approaches
are
reviewed
terms
vast
details,
engineered
benefits,
understandings
various
Pt‐group
metal
(PGM)
non‐PGM
based
transition
production.
As
trend,
brief
discussions
also
presented
high‐level
assembly
complexly
components
systems.
Japanese Journal of Applied Physics,
Journal Year:
2025,
Volume and Issue:
64(2), P. 02SP06 - 02SP06
Published: Jan. 16, 2025
Abstract
Formation
of
an
ultrathin
Ni-silicide
on
SiO
2
by
exposing
a
Ni
film
to
pure
SiH
4
gas
at
280
°C
was
tried.
During
the
formation,
impacts
Ni-film
thickness
and
exposure
time
silicidation
reaction
were
investigated.
It
found
that
surface
roughness
depends
thickness,
that,
in
case
3
nm
thick
Ni-film,
smooth
obtained
even
after
exposure.
Also,
it
is
limited
between
5
min,
more
than
crystalline
phase
transition
from
Si-rich
Ni-rich
formation
with
poor
crystallinity
confirmed.
Consequently,
we
successfully
formed
ultra-thin
low
temperature.
Small Methods,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 19, 2025
Abstract
Reducing
platinum
(Pt)
usage
and
enhancing
its
catalytic
performance
in
the
hydrogen
oxidation
reaction
(HOR)
oxygen
reduction
(ORR)
are
vital
for
advancing
fuel
cell
technology.
This
study
presents
design
investigation
of
monolayer
few‐layer
Pt
structures
with
high
utilization,
developed
through
theoretical
calculations.
By
minimizing
metal
thickness
from
1
to
3
atomic
layers,
an
utilization
rate
ranging
66.66%
100%
is
achieved,
contrast
conventional
multilayer
structures.
resulted
a
unique
surface
coordination
environment.
These
thinner
exhibited
nonlinear
fluctuations
key
electronic
characteristics—such
as
d‐band
center,
charge,
work
function—as
layer
decreased.
variations
significantly
impacted
species
adsorption
Pt‐H
2
O
interfacial
structure,
which
turn
affected
activity.
Notably,
1‐layer
best
HOR,
while
3‐layer
showed
activity
both
HOR
ORR.
The
findings
establish
clear
relationship
between
thickness,
characteristics,
behavior,
electric
double‐layer
systems.
research
contributes
deeper
understanding
precision
atomic‐structured
electrocatalyst
paves
way
development
highly
effective,
low‐loading
Pt‐based
materials.
ACS Sustainable Chemistry & Engineering,
Journal Year:
2023,
Volume and Issue:
11(30), P. 11219 - 11228
Published: July 17, 2023
Generating
green
hydrogen
through
proton
exchange
membrane
electrolyzer
cells
(PEMECs)
is
promising
to
build
future
sustainable
energy
systems.
Operating
PEMECs
at
high
current
densities
with
efficiency
a
realistic
strategy
reduce
the
capital
costs
of
and
increase
their
sustainability.
Herein,
an
Ir-integrated
electrode
was
developed
via
facile
electrodeposition
as
efficient
anode
for
PEMECs,
successfully
achieving
high-current
operation
up
6
A/cm2.
More
importantly,
shows
excellent
stability
under
ultrahigh
density
5
A/cm2,
showing
almost
no
performance
loss
after
test.
Further
studies
indicate
that
platinum
protection
layer
on
Ti
substrates
plays
crucial
role
in
superior
stability,
which
not
only
provides
electrodes
improved
electrical
conductivity
resulting
catalyst
activity
but
also
enhances
crack-free
catalysts'
adhesion
improvement
substrate
prevents
oxidation.
With
platinum,
cell
voltage
can
be
by
33,
59,
87
mV
2,
4,
respectively.
Overall,
considering
capability,
remarkable
significantly
simplified
low-cost
fabrication
process
easy
scalability,
integrated
are
believed
have
great
potential
