International Journal of Electrochemical Science,
Год журнала:
2024,
Номер
19(6), С. 100590 - 100590
Опубликована: Апрель 16, 2024
Layered
double
hydroxides
(LDH)
are
being
explored
as
a
promising
electrode
material
for
supercapacitors
due
to
their
cost-effectiveness,
high
reactivity,
and
environmental
friendliness.
Nowadays,
considerable
efforts
about
LDH
have
focus
on
the
composition
of
different
bimetals
or
trimetals,
few
studies
impact
bimetal
ratio.
In
this
study,
NiFe-LDH
materials
with
proportions
were
synthesized
by
one-step
hydrothermal
method.
The
results
show
that
content
Ni
Fe
in
has
certain
effect
electrochemical
performance
electrode.
particular,
Ni5Fe1-LDH
exhibits
outstanding
terms
both
specific
capacity
energy
density,
even
than
some
composite
based
NiFe-LDH.
Specifically,
demonstrates
139.83
mAh
g−1at
0.5
A
g−1,
maintaining
cycle
efficiency
66.36%
after
3000
cycles.
Furthermore,
Ni5Fe1-LDH//AC
density
35.85
Wh
kg−1
at
power
800
W
kg−1.
Dalton Transactions,
Год журнала:
2024,
Номер
53(25), С. 10403 - 10415
Опубликована: Янв. 1, 2024
Metal-organic
frameworks
(MOFs)
have
emerged
as
promising
electrode
materials
for
supercapacitors
(SCs)
due
to
their
highly
porous
structures,
tunable
chemical
compositions,
and
diverse
morphologies.
However,
applications
are
hindered
by
low
conductivity
poor
cycling
performance.
A
novel
approach
resolving
this
issue
involves
the
growth
of
layered
double
hydroxides
(LDHs)
using
MOFs
efficient
templates
or
precursors
material
preparation.
This
method
effectively
enhances
stability,
electrical
conductivity,
mass
transport
ability
MOFs.
The
MOF-derived
LDH
exhibits
a
well-defined
micro-/nano-structure,
facilitating
dispersion
active
sites
preventing
aggregation
LDHs.
Firstly,
paper
introduces
synthesis
strategies
converting
into
Subsequently,
recent
research
progress
in
LDHs
encompassing
pristine
powders,
composites,
LDH-based
arrays,
along
with
SCs,
is
overviewed.
Finally,
challenges
associated
potential
solutions
discussed.
