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.
InfoMat,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 11, 2025
Abstract
MXenes,
a
class
of
two‐dimensional
(2D)
transition
metal
carbides,
and
covalent
organic
frameworks
(COFs)
deliver
unique
structural
electrochemical
properties,
making
them
promising
candidates
for
energy
storage
conversion
applications.
MXenes
exhibit
excellent
conductivity
tunable
surface
chemistries,
whereas
the
COFs
provide
high
porosity
versatility.
Recent
advances
in
integrating
MXene‐COF
composites
have
revealed
their
potential
to
enhance
charge
transfer
storage/conversion
properties.
The
work
highlights
key
developments
integration,
offering
insights
into
applications
batteries
(Li‐ion,
K‐ion,
Na‐ion,
Li‐S),
supercapacitors,
electrocatalysis
(HER,
OER,
RR,
NRR,
ORRCO2),
while
also
addressing
current
challenges
future
directions
not
only
but
other
electronic
devices.
image
International Journal of Energy Research,
Journal Year:
2025,
Volume and Issue:
2025(1)
Published: Jan. 1, 2025
The
low‐cost,
binder‐free
chemical
bath
deposition
(CBD)
method
was
utilized
to
deposit
molybdenum
oxide
(MoO
3
)
thin
films
on
stainless
steel
(SS)
substrates
at
various
concentrations
of
sodium
molybdate
(Na
2
MoO
4
precursor
(0.025–0.1
M)
and
applied
as
an
anode
for
supercapacitive
charge
storage.
effect
concentration
the
physicochemical
properties
electrodes
studied.
MO
(synthesized
using
a
0.075
M
Na
precursor)
exhibited
mass
loading
0.56
mg
cm
−2
,
hexagonal
crystal
structure
microrod‐like
surface
morphology.
formation
proved
by
Raman
(Energy
Dispersive
X‐ray
Analysis)
EDAX
studies.
MO3
film
showed
specific
capacitance
(C
s
958.9
F
g
−1
5
mA
current
density.
An
aqueous
asymmetric
supercapacitor
(ASC)
device
assembled
polyaniline
(PANI)
cathode.
//H
SO
//PANI
C
53.7
with
energy
density
(ED)
14.4
Wh
kg
power
(PD)
1.3
kW
83.7%
capacitive
retention
over
1500
cyclic
voltammetry
(CV)
cycles.
Energy Technology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
The
tremendous
advancements
in
science
and
technology
have
resulted
the
invention
of
electronic
devices
that
require
greater
energy
storage
capabilities.
Hybrid
supercapacitors
(SCs)
gain
promising
interest
due
to
their
exceptional
electrochemical
performance
similar
batteries
(high‐energy
density)
SCs
(high‐power
density).
excellent
electrode
material
is
significantly
influenced
by
employed
synthesis
route.
copper
phosphate
(Cu
3
(PO
4
)
2
nanomaterials
are
synthesized
using
hydrothermal
sonochemical
techniques.
Two‐
three‐electrode
configurations
utilized
evaluate
as‐prepared
nanomaterials.
An
incredible
specific
capacity
443.86
C
g
−1
at
1.4
A
achieved
through
sonochemically
obtained
nanomaterial
(S2).
In
two‐electrode
configuration,
S2
used
as
a
positive
fabricate
an
asymmetric
device,
which
provides
density
51.2
Wh
kg
power
6800
W
0.9
8.0
,
respectively.
device
also
demonstrates
retention
93.45%
after
1000
galvanostatic
charge–discharge
cycles
5
.
Overall,
outcomes
suggest
method
most
effective
approach
for
preparation
next‐generation
applications.
