ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(22), P. 25314 - 25321
Published: Nov. 8, 2024
This
Letter
investigates
the
synthesis
of
amorphous
high-entropy
alloy
(HEA)
catalysts
via
non-thermal-shock
microwave
irradiation.
As
a
proof-of-concept,
we
synthesized
quinary
FeCoNiCuAl
HEA
with
dual-phase
BCC
and
FCC
facets.
Introducing
3D-printed
Ti64
monolith
support
has
proven
catalyst's
longevity
during
1440
min
time-on-stream
enhanced
mass
transfer.
With
an
ultralow
loading
∼3
wt
%
coated
on
monolith,
∼100%
CH4
selectivity
∼0.06
mol
gcat–1
h–1
were
attained,
demonstrating
remarkable
performance
toward
C–O
cleavage.
Overall,
this
work
features
advanced
manufacturing
adoption
in
roll-to-roll
nanoscale
materials
for
industrial-scale
methanation.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(27)
Published: April 19, 2024
Abstract
Spinel
oxides
with
tunable
chemical
compositions
have
emerged
as
versatile
electrocatalysts,
however
their
performance
is
greatly
limited
by
small
surface
area
and
low
electron
conductivity.
Here,
ultrathin
high‐entropy
Fe‐based
spinel
nanosheets
are
rationally
designed
(i.e.,
(Co
0.2
Ni
Zn
Mg
Cu
)Fe
2
O
4
;
denotes
A
5
Fe
)
in
thickness
of
≈4.3
nm
large
highly
exposed
active
sites
via
a
modified
sol–gel
method.
Theoretic
experimental
results
confirm
that
the
bandgap
significantly
smaller
than
ordinary
oxides,
realizing
transformation
binary
oxide
from
semiconductors
to
metalloids.
As
result,
such
manifest
excellent
for
nitrate
reduction
reaction
(NO
3
−
RR)
ammonia
(NH
),
NH
yield
rate
≈2.1
mmol
h
−1
cm
−2
at
−0.5
V
versus
Reversible
hydrogen
electrode,
outperforming
other
spinel‐based
electrocatalysts.
Systematic
mechanism
investigations
reveal
NO
RR
mainly
occurred
on
sites,
introducing
tetrahedral
regulates
adsorption
strength
N
O‐related
intermediates
boosting
RR.
The
above
findings
offer
platform
regulate
enhance
electrocatalytic
oxides.
Advanced Science,
Journal Year:
2024,
Volume and Issue:
11(25)
Published: April 22, 2024
Abstract
High‐entropy
oxides
(HEOs)
have
garnered
significant
attention
within
the
realm
of
rechargeable
batteries
owing
to
their
distinctive
advantages,
which
encompass
diverse
structural
attributes,
customizable
compositions,
entropy‐driven
stabilization
effects,
and
remarkable
superionic
conductivity.
Despite
brilliance
HEOs
in
energy
conversion
storage
applications,
there
is
still
lacking
a
comprehensive
review
for
both
entry‐level
experienced
researchers,
succinctly
encapsulates
present
status
challenges
inherent
HEOs,
spanning
features,
intrinsic
properties,
prevalent
synthetic
methodologies,
diversified
applications
batteries.
Within
this
review,
endeavor
distill
characteristics,
ionic
conductivity,
entropy
explore
practical
(lithium‐ion,
sodium‐ion,
lithium‐sulfur
batteries),
including
anode
cathode
materials,
electrolytes,
electrocatalysts.
The
seeks
furnish
an
overview
evolving
landscape
HEOs‐based
cell
component
shedding
light
on
progress
made
hurdles
encountered,
as
well
serving
guidance
compositions
design
optimization
strategy
enhance
reversible
stability,
electrical
electrochemical
performance
conversion.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 1, 2024
While
high-entropy
alloys,
oxides,
and
hydroxides,
are
advanced
as
a
novel
frontier
in
electrocatalytic
oxygen
evolution,
their
inherent
activity
deficiency
poses
major
challenge.
To
achieve
the
unlimited
goal
to
tailor
structure-activity
relationship
multicomponent
systems,
entropy-driven
composition
engineering
presents
substantial
potential,
by
fabricating
anion-regulated
transition
metal
compounds
sophisticated
evolution
reaction
electrocatalysts.
Herein,
versatile
2D
phosphorus
trisulfide
is
developed
promising
adjustable
platform.
Leveraging
multiple
electron
couplings
d-p
orbital
hybridizations
induced
cocktail
effect,
exceptional
catalytic
disclosed
upon
van
der
Waals
material
(MnFeCoNiZn)PS
Chemical Society Reviews,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 11, 2024
The
core
of
clean
energy
technologies
such
as
fuel
cells,
water
electrolyzers,
and
metal-air
batteries
depends
on
a
series
oxygen
hydrogen-based
electrocatalysis
reactions,
including
the
reduction
reaction
(ORR),
evolution
(OER)
hydrogen
(HER),
which
necessitate
cost-effective
electrocatalysts
to
improve
their
efficiency.
In
recent
decade,
complex
metal
oxides
(beyond
simple
transition
oxides,
spinel
ABO
Energy Reviews,
Journal Year:
2024,
Volume and Issue:
3(4), P. 100103 - 100103
Published: July 16, 2024
This
article
presents
a
strategy
for
enhancing
the
catalytic
performance
and
stability
of
anodic
electrocatalysts
in
proton
exchange
membrane
(PEM)
water
splitting.
PEM
splitting
is
sustainable
method
producing
hydrogen
oxygen
from
utilizing
electrocatalysts.
However,
employed
this
process
are
crucial
its
commercialization
due
to
harsh
condition
causing
low
stability.
The
main
focus
review
strategies
improving
as
well
electrocatalysts,
such
doping
with
heteroatoms,
alloying
other
metals.
results
demonstrate
that
these
modifications
can
significantly
enhance
These
open
new
possibilities
development
efficient
stable
splitting,
paving
way
widespread
use
clean
energy
applications.
