Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 30, 2023
Abstract
The
Co-based
organic
skeleton
was
combined
with
graphene
oxide
(GO)
as
a
precursor,
Ni
2+
hydrolysis
etching
introduced,
and
finally,
NiCo-LDH
obtained.
final
composite
electrode
material
NiCo
2
S
4
/rGO
obtained
by
high-temperature
vulcanization.
introduction
of
MOFs
rGO
significantly
increased
the
specific
surface
area
made
it
have
excellent
electrochemical
properties.
capacitance
/20rGO
reaches
an
astonishing
2452.65
F
g
−
1
when
current
density
is
A
.
In
addition,
at
large
10
,
can
also
reach
1250
after
long
cycle
5000
cycles
such
density,
capacity
remains
original
73.2%.
With
positive
activated
carbon
negative
electrode,
hybrid
supercapacitor
assembled.
At
energy
56.9
Wh
kg
its
power
799
W
still
has
retention
rate
74%
properties
composites
demonstrated
in
this
work
open
up
new
possibilities
for
high-quality
storage
devices.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 14, 2024
Abstract
Ternary
metal
sulfides
(TMSs)
have
garnered
significant
attention
as
alternative
electrode
materials
for
rechargeable
metal‐ion
battery
anodes
and
electrodes
electrochemical
supercapacitors
(SCs).
With
the
escalating
costs
of
lithium,
research
has
shifted
toward
sources
like
sodium‐ion
batteries
(NIBs)
potassium‐ion
(KIBs),
offering
cost‐effectiveness
greater
natural
abundance
globally.
However,
pursuing
suitable
beyond
lithium‐ion
(LIBs),
such
NIBs,
KIBs,
SCs
with
enhanced
energy
power
density,
remains
a
formidable
challenge.
In
this
context,
TMSs
demonstrate
remarkable
reversibility
NIB,
KIB,
SC
materials,
showcasing
multi‐electron
redox
reactions,
improved
electronic
conductivity,
higher
theoretical
capacities.
Numerous
articles
highlighted
promising
future
conversion
storage
(EECS).
Nonetheless,
practical
applications
are
hindered
by
limitations,
including
structural
stability
during
long‐standing
cyclability,
scalability.
This
review
systematically
demonstrates
how
varying
synthesis
routes
can
tailor
nanostructures
their
influence
on
activity.
Additionally,
an
in‐depth
literature
survey
is
provided
performances
in
summarize
recent
advancements
best
available
literature.
Moreover,
prospects
challenges
highlighted,
expressing
optimism
that
will
emerge
pivotal
EECS.
Chemistry - An Asian Journal,
Journal Year:
2024,
Volume and Issue:
19(13)
Published: April 30, 2024
Abstract
Herein,
the
performance
of
asymmetric
supercapacitors
(ASC)
fabricated
using
ZnCo
2
O
4
(ZCO)
nano‐hexagons
and
orange
peel‐derived
activated
carbon
(OPAC)
as
electrodes
was
studied.
ZCO
prepared
by
a
double
hydroxide
method
OPAC
from
peel
followed
KOH
activation.
For
ZCO,
calcination
temperature
determined
TGA
analysis.
The
XRD
showed
presence
cubic
spinel
structure.
chemical
structure
analyzed
XPS,
FTIR,
Raman
spectroscopy
respectively.
OPAC,
an
amorphous
nature
inferred;
FTIR
studies
indicate
functional
groups
defect
in
material.
observed
SEM
TEM
interconnected
pore
image.
specific
capacitance
for
found
to
be
194
F.g
−1
159
at
current
density
0.25
A.g
.
Further,
ASC
positive
negative
electrode
2M
KOH‐soaked
separator.
A
cell
voltage
1.2
V
achieved
calculated
64
cyclic
stability
changes
electrode/electrolyte
interface
were
Journal of Materials Chemistry C,
Journal Year:
2024,
Volume and Issue:
12(36), P. 14650 - 14657
Published: Jan. 1, 2024
In
this
work,
the
Zn/OLPC-2
hard
shell
cells
present
a
specific
capacity
of
176.2
mA
h
g
−1
at
0.1
A
.
They
achieve
cycle
life
15
000
times
and
retention
96.8%
10
RSC Advances,
Journal Year:
2024,
Volume and Issue:
14(14), P. 9587 - 9593
Published: Jan. 1, 2024
The
specific
capacity
of
urchin-like
NiCo
2
S
is
1352
F
g
−1
at
a
current
density
1
A
.
4
//AC
ASC
device
provides
high
energy
power
2025
W
kg
capacitance
retention
NCS-1.5//AC
81.98%
after
10
000
cycles
charging
and
discharging.
