Journal of Science Advanced Materials and Devices,
Journal Year:
2023,
Volume and Issue:
8(4), P. 100643 - 100643
Published: Nov. 3, 2023
Miniaturization
of
supercapacitor
offers
an
attractive
route
to
the
fabrication
portable
and
wearable
electronic
devices,
but
still
suffer
from
limited
areal
capacitance.
Herein,
we
utilize
a
facile
stamping
approach
fabricate
flexible
paper-based
micro-supercapacitors
with
ternary
composite
containing
polyaniline
(PANI)
as
patterned
interdigital
electrode
materials.
The
composites
are
composed
PANI,
metal-organic
frameworks
derived
porous
carbon
(C800)
low-oxidized
graphene
(LGE).
Benefiting
synergy
C800
LGE,
electrical
conductivity
capacitance
retention
PANI
were
enhanced
obviously.
resultant
displayed
high
162
mF·cm−2,
remarkable
energy
density
24.9
μWh·cm−2,
90
%
over
thousands
charge-discharge
cycles
excellent
stability
against
bending
even
at
large
angles.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(17), P. 11183 - 11192
Published: April 17, 2024
E-skins,
capable
of
responding
to
mechanical
stimuli,
hold
significant
potential
in
the
field
robot
haptics.
However,
it
is
a
challenge
obtain
e-skins
with
both
high
sensitivity
and
stability.
Here,
we
present
bioinspired
piezoresistive
sensor
hierarchical
structures
based
on
polyaniline/polystyrene
core–shell
nanoparticles
polymerized
air-laid
paper.
The
combination
laser-etched
reusable
templates
sensitive
materials
that
can
be
rapidly
synthesized
enables
large-scale
production.
Benefiting
from
substantially
enlarged
deformation
structure,
developed
electronics
exhibit
decent
21.67
kPa–1
subtle
detection
limit
3.4
Pa.
Moreover,
an
isolation
layer
introduced
enhance
interface
stability
e-skin,
fracture
66.34
N/m.
Furthermore,
e-skin
seamlessly
integrated
onto
gloves
without
any
detachment
issues.
With
assistance
deep
learning,
achieves
98%
accuracy
rate
object
recognition.
We
anticipate
this
strategy
will
render
more
robust
interfaces
heightened
sensing
capabilities,
offering
favorable
pathway
for
Small,
Journal Year:
2024,
Volume and Issue:
20(33)
Published: April 3, 2024
An
electrochemical
capacitor
configuration
extends
its
operational
potential
window
by
leveraging
diverse
charge
storage
mechanisms
on
the
positive
and
negative
electrodes.
Beyond
harnessing
capacitive,
pseudocapacitive,
or
Faradaic
energy
enhancing
performance
at
high
rates,
achieving
a
balance
of
stored
across
electrodes
poses
significant
challenge
over
wide
range
charge-discharge
currents
sweep
rates.
Consequently,
fabricating
hybrid
asymmetric
supercapacitors
demands
precise
evaluations
electrode
materials
development
reliable
methodology.
This
work
provides
an
overview
fundamental
aspects
related
to
charge-storage
methods,
aiming
discern
contribution
each
process.
Subsequently,
properties,
including
working
windows,
rate
capability
profiles,
stabilities,
various
families
are
explored.
It
is
then
demonstrated,
how
balancing
between
falters
broad
Finally,
methodology
for
in
proposed,
outlining
multiple
conditions
dependent
loaded
mass
current.
Two
step-by-step
tutorials
model
examples
applying
this
also
provided.
The
proposed
anticipated
stimulate
continued
dialogue
among
researchers,
fostering
advancements
stable
high-performance
supercapacitor
devices.
npj Flexible Electronics,
Journal Year:
2024,
Volume and Issue:
8(1)
Published: March 14, 2024
Abstract
Deformable
and
miniaturized
energy
storage
devices
are
essential
for
powering
soft
electronics.
Herein,
we
fabricate
deformable
micro
supercapacitors
(MSCs)
based
on
eutectic
gallium-indium
liquid
metal
(EGaIn)
current
collectors
with
integrated
graphene.
The
well-define
interdigitated
electrode
patterning
controlled
gap
is
successfully
realized
by
using
the
laser
ablation
because
of
a
strong
absorption
graphene
EGaIn.
By
judicious
control
size
between
neighboring
electrodes
mass
loading
graphene,
achieve
high
areal
capacitance
(1336
µF
cm
−2
)
reliable
rate
performance.
In
addition,
owing
to
intrinsic
characteristics
EGaIn
collector,
fabricated
MSC
retains
90%
original
value
even
after
repetitive
folding
20%
stretching
up
1000
cycles.
Finally,
integrate
commercial
light-emitting
diode
demonstrate
feasibility
as
power
source.
MSCs
operate
stably
under
various
mechanical
deformations,
including
stretching,
folding,
twisting,
wrinkling.
