Metals,
Journal Year:
2024,
Volume and Issue:
14(8), P. 841 - 841
Published: July 23, 2024
As
a
typical
spinel
structure
material,
ZnMn2O4
has
been
widely
researched
in
the
field
of
electrode
materials.
However,
nanoparticles
as
materials
for
supercapacitors
have
disadvantages
low
conductivity,
inferior
structural
integrity,
and
easy
aggregation,
resulting
unsatisfying
electrochemical
performance.
In
this
work,
we
use
hydrothermal
method
high-temperature
calcination
to
deposit
on
carbon
cloth
explore
influence
reaction
time
deposition
morphology
distribution
cloth.
The
process
was
analyzed,
ZMO-9
deduced
be
most
suitable
supercapacitors.
A
series
performance
tests
show
that
excellent
specific
capacitance
(specific
capacity)
(499
F·g−1
(299.4
C·g−1)
at
current
density
1
A·g−1)
rate
(75%
retention
12
A·g−1).
assembled
asymmetric
supercapacitor
an
energy
46.6
Wh·kg−1
when
power
is
800.1
W·kg−1.
This
work
provides
reference
design
improvement
properties.
APL Materials,
Journal Year:
2025,
Volume and Issue:
13(5)
Published: May 1, 2025
The
growing
demand
for
renewable
energy
has
ignited
an
interest
in
novel
materials
to
improve
the
efficiency
of
storage.
This
study
introduces
a
straightforward
hydrothermal
technique
synthesize
pristine
ZnS,
Bi2Se3,
and
their
composite
ZnS–Bi2Se3,
which
is
intended
as
high-performance
electrode
material
supercapacitors.
We
evaluate
as-synthesized
structural,
morphological,
electrochemical
properties
better
understanding
charge
storage
mechanisms.
ZnS–Bi2Se3
exhibits
high
activity
chemical
stability,
owing
specific
capacitance
745
F
g−1
at
1
A
g−1.
Furthermore,
asymmetric
supercapacitor
with
ZnS–Bi2Se3||activated
carbon
configuration
delivers
remarkable
density
56.66
Wh
kg−1
power
4990.90
W
kg−1.
Density
functional
theory
calculations
further
elucidate
these
results,
showing
optimized
work
function,
total
states,
atomic
structure,
enhance
composite’s
electronic
conductivity
transfer
capabilities.
Based
on
findings,
metal
sulfide–selenide
composites
may
be
economically
feasible
choices
energy.
The Journal of Physical Chemistry Letters,
Journal Year:
2025,
Volume and Issue:
unknown, P. 5302 - 5311
Published: May 20, 2025
Multimetallic
electrodes
are
gaining
significant
attention
due
to
their
ability
offer
diverse
electronic
configurations
and
local
lattice
distortions,
optimizing
interactions
with
reactants
intermediates.
Metal-phenolic
networks
(MPNs)
present
a
promising
solution
by
incorporating
wide
range
of
metals
ligands
enhance
specific
electrochemical
reactions.
Despite
potential,
on-substrate
synthesis
direct
application
MPNs
in
electrocatalysis
have
been
limited.
This
study
introduces
an
elegant,
feasible
strategy
for
as
the
oxygen
evolution
reaction
(OER)
catalyst
without
post-treatment
systematically
evaluates
metal
ion
effect
leveraging
multimetallic
doping
strategy.
Notably,
trimetallic
complex
performs
unambiguously
better
than
bimetallic
monometallic
counterparts.
TA-CoNiFe@NF
demonstrated
superior
OER
performance,
impressive
overpotential
215
mV
at
10
mA·cm-2,
Tafel
slope
37.3
mV·dec-1,
excellent
stability
over
100
h.
The
computational
results
illustrate
on
mechanism.
We
demonstrate
that
phenolic
unique
benefits
compared
MOFs,
alloys,
or
oxide
hybrids,
enabling
facile
on-surface
coordination
versatile
incorporation.
effective,
approach
tuning
paves
way
high-performance
electrocatalyst
designs
synthesis.
