Batteries,
Journal Year:
2024,
Volume and Issue:
10(12), P. 438 - 438
Published: Dec. 10, 2024
Supercapacitors
are
a
kind
of
energy
storage
device
that
lie
between
traditional
capacitors
and
batteries,
characterized
by
high
power
density,
long
cycle
life,
rapid
charging
discharging
capabilities.
The
mechanism
supercapacitors
mainly
includes
electrical
double-layer
capacitance
pseudocapacitance.
In
addition
to
constructing
multi-level
pore
structures
increase
the
specific
surface
area
electrode
materials,
defect
engineering
is
essential
for
enhancing
electrochemical
active
sites
achieving
additional
extrinsic
Therefore,
developing
simple
efficient
method
essential.
Atomic
layer
deposition
(ALD)
technology
enables
precise
control
over
thin
film
thickness
at
atomic
level
through
layer-by-layer
deposition.
This
capability
allows
intentional
introduction
defects,
such
as
vacancies,
heteroatom
doping,
or
misalignment,
within
material.
ALD
process
can
regulate
defects
in
materials
without
altering
overall
structure,
thereby
optimizing
both
physical
properties
materials.
Its
self-limiting
reaction
also
ensures
doping
introduced
uniformly
across
material
surface.
uniform
distribution
particularly
profitable
electrodes
supercapacitor
applications,
it
promotes
consistent
performance
entire
electrode.
review
systematically
summarizes
latest
advancements
via
supercapacitors,
including
enhancement
conductivity
ALD,
improving
density
device.
Furthermore,
we
discuss
underlying
mechanisms,
advantages,
future
directions
this
field.
Materials,
Journal Year:
2024,
Volume and Issue:
17(21), P. 5249 - 5249
Published: Oct. 28, 2024
This
investigation
focused
on
the
fabrication
of
ceramic
ferrimagnetic
CuFe2O4–conductive
polypyrrole
(PPy)
composites
for
energy
storage.
CuFe2O4
with
a
crystal
size
20–30
nm
and
saturation
magnetization
31.4
emu
g−1
was
prepared
by
hydrothermal
synthesis,
PPy
chemical
polymerization.
High-active-mass
composite
electrodes
were
fabricated
storage
in
supercapacitors
operation
sodium
sulfate
electrolyte.
The
addition
to
resulted
decrease
charge
transfer
resistance
an
increase
capacitance
range
from
1.20
F
cm−2
(31
g−1)
4.52
(117.4
at
1
mV
s−1
sweep
rate
1.17
(29.9
4.60
(120.1
3
mA
current
density.
showed
higher
than
other
magnetic
same
mass
containing
potential
exhibited
improved
cyclic
stability.
behavior
influenced
properties
paramagnetic
PPy.
valuable
combination
capacitive
enriched
materials
science
novel
applications
based
magnetoelectric
magnetocapacitive
properties.
Chemistry Africa,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 23, 2024
Abstract
In
this
study,
silicene
nanosheets
(SNs)
were
synthesized
using
molten
salt
chemical
exfoliation.
Polythiophene
(PTh)
and
SNs/PTh
nanocomposites
prepared
through
an
in-situ
oxidative
polymerization
method.
Raman
spectroscopy
confirmed
the
formation
of
SNs,
PTh,
various
at
different
ratios.
X-ray
diffraction
(XRD)
analysis
verified
presence
crystalline
amorphous
nature
combination
SNs
with
PTh
in
nanocomposites.
Field-emission
scanning
electron
microscopy
(FESEM)
revealed
morphology
sheets
distribution
granular
globes
flakes
Transmission
(TEM)
showed
transparent
reduced-stacking
as
well
aggregated
evenly
distributed
over
surface
Electrochemical
tests
indicated
that
exhibited
higher
specific
capacitance,
energy
density,
stable
cycling
performance
compared
to
individual
PTh.
Cyclic
voltammetry
(CV)
measurements
best
performing
supercapacitor
electrode,
SNs/PTh-67
nanocomposite
displayed
a
capacitance
276.25
F/g
scan
rate
5
mV/s
delivered
density
13.8
Wh/kg.
The
also
excellent
stability
retention
85.9%
after
2000
consecutive
charge–discharge
cycles
current
4
A/g.
This
study
demonstrates
potential
high-performance
electrode
material
for
supercapacitors.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(23), P. 3266 - 3266
Published: Nov. 24, 2024
Designing
novel
π-conjugated
conductive
polymers
with
abundant
redox-active
groups
is
a
viable
route
to
achieve
high
charge
storage
performance
for
aqueous
energy
devices.
Electropolymerization
powerful
tool
construct
polymers.
Here,
s-triazine
is,
the
first
time,
electropolymerized
in
an
acidic
solution
on
carbon
cloth.
The
polytriazine-coated
cloth
electrode
(PT/CC)
exhibits
granular
structure,
pores.
investigated,
and
specific
capacity
of
101.4
mAh
g-1
at
1
A
M
H2SO4
achieved.
Additionally,
ZnSO
Batteries,
Journal Year:
2024,
Volume and Issue:
10(12), P. 438 - 438
Published: Dec. 10, 2024
Supercapacitors
are
a
kind
of
energy
storage
device
that
lie
between
traditional
capacitors
and
batteries,
characterized
by
high
power
density,
long
cycle
life,
rapid
charging
discharging
capabilities.
The
mechanism
supercapacitors
mainly
includes
electrical
double-layer
capacitance
pseudocapacitance.
In
addition
to
constructing
multi-level
pore
structures
increase
the
specific
surface
area
electrode
materials,
defect
engineering
is
essential
for
enhancing
electrochemical
active
sites
achieving
additional
extrinsic
Therefore,
developing
simple
efficient
method
essential.
Atomic
layer
deposition
(ALD)
technology
enables
precise
control
over
thin
film
thickness
at
atomic
level
through
layer-by-layer
deposition.
This
capability
allows
intentional
introduction
defects,
such
as
vacancies,
heteroatom
doping,
or
misalignment,
within
material.
ALD
process
can
regulate
defects
in
materials
without
altering
overall
structure,
thereby
optimizing
both
physical
properties
materials.
Its
self-limiting
reaction
also
ensures
doping
introduced
uniformly
across
material
surface.
uniform
distribution
particularly
profitable
electrodes
supercapacitor
applications,
it
promotes
consistent
performance
entire
electrode.
review
systematically
summarizes
latest
advancements
via
supercapacitors,
including
enhancement
conductivity
ALD,
improving
density
device.
Furthermore,
we
discuss
underlying
mechanisms,
advantages,
future
directions
this
field.
