Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 19, 2024
Supercapacitors
have
gained
interest
as
innovative
sustainable
energy
storage
systems
owing
to
their
high
specific
capacitance
and
superior
cycle
stabilities.
However,
large-scale
applications
are
limited
by
poor
electron
conductivity
low
density.
Herein,
we
prepare
a
NiSe2/MoSe2
composite
on
nickel
foam
via
two-step
hydrothermal
route,
which
delivers
capacity
of
736
C
g–1
at
1
A
g–1.
Meanwhile,
it
achieves
retention
rate
92.87%
5
after
cycling
10,000
times.
Furthermore,
the
assembled
asymmetric
device
offers
an
density
59.25
Wh
kg–1
power
2700
W
kg–1.
Also,
devices
maintain
excellent
mechanical
stability
durability
multiple
bending.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
38(13), P. 12251 - 12264
Published: June 25, 2024
The
high
theoretical
energy
storage
capacity
of
nickel-based
polyvalent
hydrotalcite
has
garnered
significant
attention
from
researchers,
positioning
it
as
a
promising
candidate
for
electrode
materials
in
the
field
supercapacitor
storage.
Unfortunately,
result
limitations
material
synthesis
and
design,
explicit
most
reported
falls
significantly
below
their
value.
concept
employing
one-step
partial
selenized
transformation
strategy
was
adopted
herein
surface
treatment
nickel–chromium
layered
double
hydroxides
(NiCr-LDHs),
with
aim
to
enhance
charge
conduction
maximize
capability.
optimally
prepared
Se-NiCr-LDHs-1
presented
mass
capacitance
754
F
g–1
at
current
density
1
A
g–1,
long-term
cycle
stability
been
improved
comparison
NiCr-LDHs.
Besides,
power
1063
W
kg–1,
self-assembled
Se-NiCr-LDHs-1//activated
carbon
(AC)
asymmetric
(ASC)
good
33
Wh
kg–1.
Happily,
Se-NiCr-LDHs-1//AC
ASC
held
77.52%
after
5000
cycles
under
10
g–1.
In
exploration
development
high-performance
supercapacitors,
selenium
augmentation
is
an
effective
means
increase
NiCr-LDHs
material.
ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(21), P. 24798 - 24809
Published: Oct. 18, 2024
The
superior
electrochemical
functionality
of
supercapacitor
electrodes
is
heavily
reliant
on
the
strategic
design
nanostructures
that
effectively
integrate
diverse
active
materials.
In
this
study,
a
facile
hydrothermal
method
was
investigated
for
easy
synthesis
Venus
flytrap-like
NiCoP
using
nickel
foam
(NF)
as
both
substrate
and
source.
Furthermore,
deposition
NiCo-LDH
onto
3D
nanomeshes
delved
into,
creating
hybrid
nanomaterial
with
enhanced
energy
storage
capability
1675
F/g
(1
A/g).
This
innovative
combination
conductive
core
redox-active
shell
forms
smart
heteronetwork
boosts
surface
area,
enhances
presence
sites,
improves
ion/electron
transport
faradaic
reactions.
NiCoP/NiCo-2//PC
boasts
remarkable
density
30.96
Wh/kg
power
783.90
W/kg
displays
favorable
capacitance
retention
rate
characteristics
(73.5%,
from
600
to
10,000
cycles).
effective
simple
technique
transforming
high-performance
anode
could
significantly
improve
their
applicability
large-scale
use
well
provide
useful
knowledge
self-supporting
substrates
conversion
through
other
manufacturing
processes.
Energy & Fuels,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 19, 2024
Supercapacitors
have
gained
interest
as
innovative
sustainable
energy
storage
systems
owing
to
their
high
specific
capacitance
and
superior
cycle
stabilities.
However,
large-scale
applications
are
limited
by
poor
electron
conductivity
low
density.
Herein,
we
prepare
a
NiSe2/MoSe2
composite
on
nickel
foam
via
two-step
hydrothermal
route,
which
delivers
capacity
of
736
C
g–1
at
1
A
g–1.
Meanwhile,
it
achieves
retention
rate
92.87%
5
after
cycling
10,000
times.
Furthermore,
the
assembled
asymmetric
device
offers
an
density
59.25
Wh
kg–1
power
2700
W
kg–1.
Also,
devices
maintain
excellent
mechanical
stability
durability
multiple
bending.
