CrS Doped MOF‐Derived Carbon Implanted CoNi Particles as Exceedingly Effectual Oxygen Electrocatalysts in Sustainable Zinc‐Air Batteries
Small Methods,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 21, 2025
Utilizing
affordable
bifunctional
catalysts
per
strong
ORR/OER
(oxygen
reduction
and
evolution
reactions)
ability
superior
zinc-air
battery
performance
is
yet
difficult
due
to
the
diverse
mechanisms
of
ORR/OER.
This
work
uses
CoNi-MOF
(metal-organic
framework)
as
a
self-template
yield
CrS
doped
CoNi/C
catalyst.
Comparable
Pt/C
IrO2
commercial
catalysts,
CrS@CoNi/C
catalyst
exhibits
improved
electrocatalytic
activity
toward
OER
ORR
its
linked
pellet
architecture
intact
metal
sulfide@carbon
structure.
The
has
most
intriguing
performance,
with
significantly
lower
potential
an
exceptionally
extended
cycle
duration
(E1/2
=
0.72
V
η10
260
mV).
CrS@CoNi/C-based
aqueous
shows
long-term
charge-discharge
stability
(more
than
100h/600
cycles)
together
significant
specific
capacity
(789.7
mAh
g-1
Zn)
power
density
(132.2
mW
cm-2).
Most
significantly,
after
stability,
recharged
alkaline
been
employed
exhibit
less
structural
deformation
for
cathode
more
zincate
ion
production
anode
side
electrodes,
which
through
TEM
analysis.
Язык: Английский
Superhydrophobic electrocatalyst embedding abundant alloy/metal carbide core–shell heterogeneous nanoparticles for high power density Zn-air battery
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162669 - 162669
Опубликована: Апрель 1, 2025
Язык: Английский
Structural Engineering of Bimetallic CoCe-ZIF Derives Catalysts with Optimized Electronic Structure for Enhanced Oxygen Electrocatalysis
Materials,
Год журнала:
2025,
Номер
18(10), С. 2251 - 2251
Опубликована: Май 13, 2025
Developing
efficient
and
durable
non-precious
metal
catalysts
for
oxygen
electrocatalysis
in
fuel
cells
zinc–air
batteries
remains
an
urgent
issue
to
be
addressed.
Herein,
a
bimetallic
CoCe-NC
catalyst
is
synthesized
through
pyrolysis
of
Co/Ce
co-doped
metal–organic
frameworks
(MOFs),
retaining
the
inherently
high
surface
area
MOFs
maximize
exposure
Co-N
Ce-N
active
sites.
The
electronic
interaction
between
Co
Ce
atoms
effectively
modulates
adsorption/desorption
behavior
oxygen-containing
intermediates,
thereby
enhancing
intrinsic
catalytic
activity.
In
alkaline
media,
exhibits
E1/2
=
0.854
V
electrocatalytic
capability
comparable
commercial
Pt/C,
along
with
superior
methanol
resistance
durability.
Notably,
demonstrates
overpotential
84
mV
lower
than
Pt/C
at
300
mA
cm−2
GDE
half-cell.
When
employed
as
cathode
batteries,
it
open-circuit
voltage
1.47
V,
peak
power
density
202
mW
cm−2,
exceptional
cycling
Язык: Английский