Nanoscale,
Год журнала:
2023,
Номер
15(39), С. 15956 - 15964
Опубликована: Янв. 1, 2023
In
the
field
of
microscale
energy
storage,
fabrication
micro-supercapacitors
(MSCs)
with
high
power
density
and
has
always
been
a
focus
research.
this
work,
laser-induced
porous
graphene
chemically
deposited
manganese
dioxide
nanoparticles
are
used
as
electrode
materials,
switchable
MSC
two
storage
principles
is
obtained
by
designing
symmetric
interdigitated
square
structures.
The
aim
to
overcome
preparation
challenge
supercapacitors
switching
between
modes.
MSC,
mode
(5.89
μW
h
cm-2)
3.36
times
that
(1.75
cm-2),
while
(43.06
1.44
(29.96
cm-2).
addition,
under
drive
five
serially
connected
MSCs,
27
LED
lights
can
be
continuously
lit
for
5
minutes.
Therefore,
work
provides
facile
novel
method
development
MSCs
density,
suggesting
great
practical
application
value
in
MSCs.
Mathematics,
Год журнала:
2023,
Номер
11(9), С. 2215 - 2215
Опубликована: Май 8, 2023
This
paper
establishes
a
study
for
an
accurate
parameter
modeling
method
lithium-ion
batteries.
A
precise
state
space
model
generated
from
equivalent
electric
circuit
is
used
to
carry
out
the
proposed
identification
process,
where
nonlinear
optimization
process
problem.
The
African
vultures
algorithm
(AVOA)
utilized
solve
this
problem
by
simulating
vultures’
foraging
and
navigating
habits.
AVOA
implement
strategy
improve
quality
of
solutions.
Four
scenarios
are
considered
take
effect
loading,
fading,
dynamic
analyses.
fitness
function
selected
as
integral
square
error
between
estimated
measured
voltage
in
these
scenarios.
Numerical
simulations
were
executed
on
2600
mAhr
Panasonic
Li-ion
battery
demonstrate
effectiveness
suggested
technique.
was
fulfilled
with
high
accuracy,
least
error,
closeness
experimental
data
compared
different
algorithms,
such
Nelder–Mead
simplex
algorithm,
quasi-Newton
Runge
Kutta
optimizer,
genetic
grey
wolf
gorilla
troops
optimizer.
achieves
lowest
level
studied
relative
algorithms.
An
advanced
structure
capable
of
hosting
large
electrochemical
activity
with
desired
balance
in
ion
diffusion
kinetics,
faradic
charge
storage,
and
robust
stability
is
the
key
to
developing
high-performance
fabric-based
supercapacitors
(FSCs).
Herein,
we
develop
a
hierarchical
multimetal
oxides@graphene
fabric
(Cu-MO@GFF)
as
supercapacitor
electrode
accelerated
ionic
diffusion,
adsorption
energy,
redox
reaction
reversibility.
As
result,
Cu-MO@GFF
presents
excellent
mass
capacitance
(534
F
g-1),
high
rate
performance
(266
g-1
at
10
A
good
cycle
(96.9%
capacitive
retention
after
20,000
cycles)
6
mol
L-1
(M)
KOH
electrolyte.
In
addition,
Cu-MO@GFF-based
solid-state
FSC
delivers
energy
density
(11.875
Wh
kg-1),
much-improved
cyclic
stability,
bending
capability.
On
account
behavior,
this
can
flexibly
power
various
wearable
devices
(such
luminous
tags,
bracelets,
watches),
which
will
offer
new
avenue
for
innovating
next-generation
devices.
