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.
Batteries,
Год журнала:
2023,
Номер
9(2), С. 128 - 128
Опубликована: Фев. 10, 2023
As
a
representative
electrochemical
energy
storage
device,
supercapacitors
(SCs)
feature
higher
density
than
traditional
capacitors
and
better
power
cycle
life
compared
to
lithium-ion
batteries,
which
explains
why
they
are
extensively
applied
in
the
field
of
storage.
While
available
reviews
mainly
concerned
with
component
materials,
state
estimation,
industrial
applications,
there
is
shortage
understanding
thermal
behaviors
management
systems
SCs,
makes
this
review
timely
aide
for
fulfilling
gap.
This
introduces
mechanisms
followed
by
descriptions
current
investigations
behaviors.
covers
aspects
heat
generation
rates
electric
double-layer
(EDLCs)
hybrid
(HSCs),
together
reviewing
existing
experimental
methods
measure
estimate
rates,
as
well
comparative
assessments
multiple
rate
models
research
on
runaway.
In
addition,
also
overviews
efforts
researchers
air
cooling
systems,
liquid
phase
change
material
pipe
systems.
Finally,
an
in-depth
discussion
provided
regarding
challenges
future
work
directions
SCs
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.
ACS Applied Energy Materials,
Год журнала:
2023,
Номер
6(11), С. 5797 - 5805
Опубликована: Май 16, 2023
Improving
the
specific
capacitance
and
energy
density
of
a
fiber-shaped
supercapacitor
(FSSC)
is
critical
to
its
applications
as
an
storage
device
for
advanced
smart
wearable
electronics.
In
this
paper,
heterogeneous
poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/reduced
graphene
oxide/molybdenum
disulfide
(PEDOT:PSS/rGO/MoS2)
fiber
was
prepared
achieve
high-performance
durable
electrode
FSSC.
As
indicated,
pseudocapacitive
MoS2
in
situ
grown
on
highly
conductive
acid-treated
PEDOT:PSS/rGO
assembly
with
hierarchical
structure.
This
structural
design
emphasizes
wrinkled
morphology
high
conductivity
backbone
maximize
deposition
accelerate
electron
transfer,
which
fully
utilizes
pseudocapacitance
provides
additional
contribution
obtained
device.
Attributed
synergy,
FSSC
exhibits
volumetric/areal
(325.8
F
cm–3/405.3
mF
cm–2
at
1
A
cm–3
or
1.2
mA
cm–2)
excellent
rate
performance
(82%,
1–10
cm–3).
The
corresponding
shows
ultrahigh
volumetric
6.9
mW
h
power
173.6
areal
8.5
μW
215.9
cm–2,
together
cycle
stability
mechanical
flexibility,
outperforming
most
previously
reported
FSSCs.
Accordingly,
proposed
strategy
great
opportunity
develop
further
