Advanced Functional Materials,
Год журнала:
2022,
Номер
32(39)
Опубликована: Июль 14, 2022
Abstract
The
push
toward
smart
technologies
and
the
Internet‐of‐Things
(IoT)
demands
development
of
miniaturized
energy
storage
devices.
Herein,
a
facile
scalable
strategy
is
presented,
based
on
laser
reduction
graphene
oxide
into
followed
by
electrodeposition
polyaniline
(PANi),
to
fabricate
substrate‐free
supercapacitor.
fabricated
supercapacitor
part
flexible
multifunctional
integrated
system
comprising
thin‐film
humidity
sensor,
resistor,
near
field
communication
(NFC)
antenna
for
IoT‐linked
wireless
with
smartphone.
sensory
shares
laser‐scribed
(LSG)
as
same
electrode
material
all
components
(supercapacitor,
NFC
antenna).
symmetric
LSG‐PANi||LSG‐PANi
charging
capability
exhibits
record‐high
density
0.407
mW
h
cm
−3
,
excellent
power
196
along
an
outstanding
rate
(enduring
high
rates
over
1
V
s
−1
).
As
device
demonstrates
resistance
changes
from
2000
kΩ
at
0%
relative
(RH)
497
100%
RH
(15
per
RH%)
sub‐second
scale
(0.87
s)
response
time.
This
research
paves
way
limitless
applications
IoT
across
wide
spectrum
fields
healthcare
chip‐based
electronics
environmental
monitoring.
Green Chemistry,
Год журнала:
2022,
Номер
24(10), С. 3864 - 3894
Опубликована: Янв. 1, 2022
This
paper
shows
a
new
classification
of
preparing
biomass-based
porous
carbon
materials.
The
design
high-performance
materials
and
their
recent
progress
in
the
field
supercapacitors
are
reviewed.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(29)
Опубликована: Июнь 16, 2023
Abstract
High‐performance
electrochemical
applications
have
expedited
the
research
in
high‐power
devices.
As
such,
supercapacitors,
including
electrical
double‐layer
capacitors
(EDLCs)
and
pseudocapacitors,
gained
significant
attention
due
to
their
high
power
density,
long
cycle
life,
fast
charging
capabilities.
Yet,
no
device
lasts
forever.
It
is
essential
understand
mechanisms
behind
performance
degradation
aging
so
that
these
bottlenecks
can
be
addressed
tailored
solutions
developed.
Herein,
factors
contributing
of
electrode
materials,
electrolytes,
other
aspects
system,
such
as
pore
blocking,
compositions,
functional
groups,
corrosion
current
collectors
are
examined.
The
monitoring
characterizing
methods,
situ,
ex
situ
techniques
explored.
In
addition,
different
types
electrolytes
materials
effects
from
an
industrial
application
standpoint
analyzed.
Next,
how
degradations
electrolyte
decompositions
lead
failure,
composition,
affect
device's
lifespan
Finally,
future
directions
challenges
for
reducing
supercapacitors'
degradation,
developing
new
methods
devices
summarized.
Advanced Functional Materials,
Год журнала:
2022,
Номер
33(1)
Опубликована: Ноя. 1, 2022
Abstract
Supercapacitors
(SCs)
offer
broad
possibilities
in
the
rising
domain
of
military
and
civilian
owing
to
their
intrinsic
properties
superior
power
density,
long
lifetime,
safety
features.
Despite
low‐cost,
facile
manufacture,
time‐saving,
3D
printing
technology
unleashes
potential
SCs
terms
achieving
desirable
capacitance
with
high
mass
loading,
fabrication
well‐designed
complicated
structures,
direct
construction
on‐chip
integration
systems.
In
this
review,
first,
representative
technologies
for
advanced
printable
materials
are
scrutinized
materials.
Then
structure
design
principles
electrodes
devices
respectively
highlighted
reported
cases
systematically
summarized.
Next,
configurations
applications
various
areas
described
detail.
Finally,
promising
research
directions
future
discussed.
The
perspectives
reviewed
here
expected
provide
a
comprehensive
understanding
3D‐printed
guidance
realizing
promise
applications.
Inorganic Chemistry Frontiers,
Год журнала:
2022,
Номер
9(14), С. 3542 - 3551
Опубликована: Янв. 1, 2022
Hierarchical
Ni(OH)
2
–MnO
hollow
spheres
are
prepared
via
a
simple
self-templating
route.
The
structural
and
compositional
advantages
of
the
material
endow
it
with
remarkable
performance
as
supercapacitor.
Transition
metal
oxide
electrode
materials
for
supercapacitors
suffer
from
poor
electrical
conductivity
and
stability,
which
are
the
research
focus
of
energy
storage
field.
Herein,
multicomponent
hybridization
Ni-Cu
(NCO-Ar/H2
-10)
enriched
with
oxygen
vacancy
high
including
Cu0.2
Ni0.8
O,
Cu2
O
CuO
is
prepared
by
introducing
Cu
element
into
Ni
hydrothermal,
annealing,
plasma
treatment.
The
NCO-Ar/H2
-10
exhibits
specific
capacity
(1524
F
g-1
at
3
A
),
good
rate
performance
(72%)
outstanding
cyclic
stability
(109%
after
40,000
cycles).
-10//AC
asymmetric
supercapacitor
(ASC)
achieves
density
48.6
Wh
kg-1
799.6
W
while
exhibiting
cycle
life
(117.5%
10,000
excellent
electrochemical
mainly
comes
round-trip
valence
change
Cu+
/Cu2+
in
enhance
surface
capacitance
during
redox
process,
electronic
microstructure
triggered
a
large
number
vacancies
reduce
adsorption
OH-
ions
thin
nanosheet
crack
edge,
ensuring
electron
ion-transport
processes
remitting
structural
collapse
material.
This
work
provides
new
strategy
improving
cycling
transition
materials.
Abstract
Battery‐type
electrode
materials
with
high
capacity,
wide
potential
windows,
and
good
cyclic
stability
are
crucial
to
breaking
through
energy
storage
limitations
achieving
density.
Herein,
a
novel
2D‐on‐2D
Al‐doped
NiCo
layered
double
hydroxide
(NiCoAl
x
LDH)
nanosheet
arrays
high‐mass‐loading
grown
on
carbon
cloth
(CC)
substrate
via
two‐step
hydro/solvothermal
deposition
strategy,
the
effect
of
Al
doping
is
employed
modify
behavior,
hierarchical
morphology,
phase
stability,
multi‐metallic
synergistic
effect.
The
optimized
NiCoAl
0.1
LDH
exhibits
capacities
5.43,
6.52,
7.25
C
cm
−2
(9.87,
10.88,
11.15
F
)
under
0–0.55,
0–0.60,
0–0.65
V
respectively,
illustrating
clearly
importance
window.
differentiated
strategy
reduces
leaching
level
3+
cations
in
alkaline
solutions,
ensuring
excellent
performance
(108%
capacity
retention
after
40
000
cycles).
as‐assembled
LDH//activated
(ACC)
hybrid
supercapacitor
delivers
3.11
at
0–2.0
V,
large
density
0.84
mWh
power
10.00
mW
,
≈135%
150
cycles.
