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.
Journal of Electronic Materials,
Journal Year:
2024,
Volume and Issue:
53(12), P. 7884 - 7899
Published: Oct. 12, 2024
Abstract
The
rise
of
flexible
and
wearable
electronics
has
spurred
advancements
in
printed,
micro-supercapacitors
for
energy
storage.
This
study
presents
the
fabrication
using
a
novel
nanocomposite
tin
dioxide
grown
on
layered
reduced
graphene
oxide
through
one-pot
situ
synthesis.
conductive
functional
ink,
formulated
by
mixing
nanocomposite,
is
effectively
utilized
screen-printing
technology.
resulting
micro-supercapacitors,
particularly
SG-1
variant,
demonstrate
impressive
electrochemical
performance.
nanocomposites
show
exceptional
versatility
across
various
electrolytes,
including
alkaline,
acidic,
quasi-gel
electrolytes
with
polyvinyl
alcohol
matrix
infused
potassium
hydroxide.
An
in-depth
comparison
their
efficacy
these
highlights
most
suitable
configurations
optimal
At
scan
rate
5
mV
s
−1
,
achieves
areal
capacitances
148.7
mF
cm
−2
87.7
1
M
KOH
electrolyte.
Additionally,
gel
electrolyte
demonstrates
remarkable
density
11.7
mWh
at
power
490
mW
.
Notably,
fabricated
exhibit
excellent
capacitive
retention
89.5%
even
after
undergoing
5000
cycles
charge–discharge,
underscoring
robustness
long-term
stability
practical
applications
electronics.
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.
