Solidification modes and delta-ferrite of two types of 316L stainless steels: a combination of as-cast microstructure and HT-CLSM research
Journal of Iron and Steel Research International,
Journal Year:
2025,
Volume and Issue:
32(2), P. 426 - 436
Published: Jan. 3, 2025
Language: Английский
Unrevealing the Interaction Between Electrode Degradation and Bubble Behaviors in an Anion Exchange Membrane Water Electrolyzer
Lizhen Wu,
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Qing Wang,
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Shu Yuan
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et al.
Advanced Science,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 7, 2025
Stainless
steel
felt
has
been
employed
in
AEMWE
as
a
combination
of
oxygen
evolution
reaction
(OER)
electrocatalysts
and
porous
transport
layers,
which
are
not
only
easy
to
prepare
but
also
have
excellent
OER
activity
under
alkaline
conditions.
However,
by
realizing
detailed
electrochemical
analysis
multi-scale
visualization
the
bubble
behaviors,
it
is
found
that
combined
effect
chemical
corrosion
led
constant
accumulation
metal
oxides
on
stainless
fiber
surface
post-durability
compared
slow-growing
hydroxides
after
initial
activation.
Moreover,
rougher
morphology
weaken
hydrophilicity
cause
adjacent
bubbles
slower
detach
from
electrode
more
likely
fusion.
The
measured
diameter
leaving
almost
doubles,
while
total
number
decreases
about
two-thirds,
causing
increase
plug
flow
field
deteriorating
performance
long-term
stability
AEMWE.
Language: Английский
Dynamic Restructuring of Asymmetric Built‐in Electric Field Catalysts Facilitates the Efficient Water Splitting
Wansen Ma,
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Yuhan Zhang,
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Liwen Hu
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et al.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 12, 2024
Abstract
Efficient
and
stable
bifunctional
catalysts
for
hydrogen
oxygen
evolution
reaction
play
an
important
role
in
realizing
economy.
In
this
study,
the
multi‐heterogeneous
interfacial
catalyst,
Ni
2
P@FeP@Co
P
(denoted
as
NFC),
with
asymmetric
built‐in
electric
field
is
successfully
designed
synthesized.
Benefiting
from
double
charge
balance
effect,
NFC
exhibits
superior
(HER)
(OER)
catalytic
activity.
Importantly,
NFC‐assembled
anion‐exchange
membrane
(AEM)
electrolyzer
enhanced
performance
remarkable
stability
at
industrial
current
densities
high
temperatures,
reaching
a
density
of
1000
mA
cm
−2
small
voltage
1.95
V.
The
results
dynamic
X‐ray
photoelectron
spectroscopy
tests
indicate
that
self‐reconfiguration
during
OER
provides
additional
active
sites
reaction.
functional
theory
(DFT)
demonstrate
(BIEF)
induces
adaptive
distribution
charge,
which
optimizes
adsorption
desorption
hydrogen/oxygen
intermediates
reaction,
thereby
enhancing
kinetics
overall
water
splitting
process.
This
work
presents
novel
strategies
design
highly
energy
conversion.
Language: Английский
Emerging Opportunities of Steel‐Based Electrode at Mesoscale Design
Zepeng Lv,
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Shaolong Li,
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Xuan Zhang
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et al.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 15, 2024
Abstract
The
electrochemical
water
splitting
technology,
a
cornerstone
for
the
production
of
“green
hydrogen”,
holds
paramount
significance
in
global
pursuit
carbon
neutrality.
Steel‐based
electrocatalysts,
when
judiciously
designed
at
mesoscale,
emerge
as
pivotal
players
quest
cost‐effective
and
highly
active
catalysts
industrial‐scale
deployment.
This
domain
has
witnessed
remarkable
progress
recent
times,
prompting
this
review
to
offer
holistic
overview
design
synthesis
methodologies
steel‐based
electrocatalysts.
focus
lies
three
primary
aspects:
intricate
phase
transition
exterior
layer,
strategic
manipulation
3D
substrate
architectures,
ingenious
coupling
multifarious
heterointerfaces.
These
strategies
collectively
contribute
enhancement
catalytic
performance.
Concluding
discussion,
key
insights
are
briefly
summarized
delved
into
challenges
prospects
surrounding
advancement
electrocatalysts
sustainable,
large‐scale
hydrogen
production.
Against
backdrop
integrating
computational
chemistry,
paired
electrocatalysis,
industrial‐grade
high‐current
direct
electrolysis
seawater,
roadmap
is
envisioned
that
aims
overcome
existing
barriers
propel
field
toward
new
horizons.
Language: Английский