Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 30, 2024
Abstract
Hydrogen
fuel
cells
represent
a
leading
technology
in
developing
green
energy
targeting
net‐zero
emissions
goals
by
mid‐century.
However,
the
sluggish
kinetics
of
oxygen
reduction
reaction
(ORR)
have
hitherto
demanded
substantial
quantities
expensive
platinum
(Pt)
group
metals.
Advances
catalyst
design,
including
controllable
fabrication
highly
branched
morphologies
to
increase
surface
area‐to‐volume
ratio,
intermixing
Pt
with
more
affordable
transition
metals,
and
controlling
composition,
offer
solutions
that
can
further
enhance
activity
reduce
expense.
In
this
context,
Pt/M
(M
=
Fe,
Ni,
Co)
nanopods
nanodendrites
precise
composition
control
using
starting
materials
are
designed
crafted.
The
method
is
efficient,
taking
only
30
min
avoiding
need
for
high‐pressure
equipment,
making
it
scalable.
These
catalysts
show
superior
ORR
performance
at
an
electrode
loading
as
low
0.0022
mg
cm
−2
.
One,
nanodendritic
Pt/Ni,
achieves
mass
0.9
V
versus
RHE,
87
times
efficient
terms
Pt‐content
than
commercial
10
wt%
Pt/C
nanoparticle
standard.
findings
provide
new
opportunities
next‐generation,
cost‐efficient
Pt‐based
catalysts,
potentially
advancing
hydrogen
cell
through
enhancement
addressing
cost
challenges
design.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 30, 2024
Abstract
Oxygen
electrocatalysis,
as
the
pivotal
circle
of
many
green
energy
technologies,
sets
off
a
worldwide
research
boom
in
full
swing,
while
its
large
kinetic
obstacles
require
remarkable
catalysts
to
break
through.
Here,
based
on
summarizing
reaction
mechanisms
and
situ
characterizations,
structure–activity
relationships
oxygen
electrocatalysts
are
emphatically
overviewed,
including
influence
geometric
morphology
chemical
structures
electrocatalytic
performances.
Subsequently,
experimental/theoretical
is
combined
with
device
applications
comprehensively
summarize
cutting‐edge
according
various
material
categories.
Finally,
future
challenges
forecasted
from
perspective
catalyst
development
applications,
favoring
researchers
promote
industrialization
electrocatalysis
at
an
early
date.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(51)
Опубликована: Авг. 22, 2024
Abstract
Architected
fibrous
electrodes
with
hierarchically
porous,
stable
interface
coupling,
and
good
biocompatibility
that
accelerates
charge
transfer
storage
are
vital
to
realize
high‐performance
fiber‐shaped
supercapacitors
(FSCs)
toward
wearable
implantable
systems.
Here,
a
porous
hetero‐structured
black
phosphorus/Ti
3
C
2
T
X
MXene
aerogel
(A‐BP/Ti
)
fiber
based
on
electrostatic
self‐assembly
microfluidic
spinning
methods
is
reported.
The
as‐prepared
A‐BP/Ti
interconnected
networks,
high
conductive
skeleton,
substantial
interfacial
building
exhibits
low
diffusion
energy
barrier
of
H
+
,
the
large
adsorption
fast
electron
conduction,
excellent
structural
stability
by
density
functional
theory
calculations
in
situ/ex
situ
characteristics.
As
result,
presents
boosted
electrolyte
ion
kinetic
capacitance
369
F
g
−1
.
Furthermore,
asymmetric
FSCs
deliver
6.39
Wh
kg
long
cycling
20
000
cycles,
thereby
successfully
powering
devices.
More
importantly,
combining
hydrogel
adhesion
agent,
can
firmly
adhere
tissues
show
significant
bending
(88.52%
retention
after
5000
cycles),
impressively
adhesive
capability
tissue
fluid
or
wetted
surface,
considerably
no
cell
toxic.
work
offers
broad
path
for
designing
technology
applications.
Inorganic Chemistry,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
Through
first-principles
structure
search
calculations,
we
have
identified
ten
hitherto
unknown
two-dimensional
(2D)
Janus-wrinkled
TMTe
monolayers
(TM
=
Ni,
Pd,
Pt,
Co,
Rh,
Ir,
Fe,
Ru,
Os,
and
Hf)
by
screening
3d,
4d,
5d
transition
metal
atoms.
These
exhibit
high
stability
metallic
conductivity.
Among
the
discovered
materials,
2D
PdTe
(ηOER/ORR
0.46/0.22
V)
PtTe
0.46/0.32
can
demonstrate
superior
bifunctional
catalytic
performance
for
oxygen
evolution
reduction
reactions
(OER/ORR),
with
lower
overpotential
than
state-of-the-art
IrO2
OER
Pt
(111)
ORR,
respectively.
The
TM-
Te-sides
originating
from
unique
Janus
configurations
play
a
crucial
role
in
ORR
activities,
Furthermore,
stacking
monolayer
structures,
eight
new
(TMTe)2
bilayers
conductivity
be
achieved,
which
possess
an
internal
layer,
forming
rich
electron
pool.
This
effectively
improves
adsorption
activity
on
some
bilayers,
including
(PdTe)2,
(PtTe)2,
(RhTe)2,
(IrTe)2,
transferring
more
electrons
to
adsorbed
O2
molecule,
leading
considerably
(ηORR
0.16–0.44
V).
Moreover,
detailed
analyses
of
mechanisms
been
conducted.
intriguing
findings
offer
insights
designing
low-cost
high-performance
electrocatalysts
reactions,
potential
replace
related
noble
catalysts
used
water
splitting,
fuel
cells,
metal-air
batteries,
etc.
