Angewandte Chemie,
Год журнала:
2024,
Номер
136(36)
Опубликована: Июнь 17, 2024
Abstract
Metal–organic
frameworks
(MOFs)
are
considered
as
a
promising
candidate
for
advancing
energy
storage
owing
to
their
intrinsic
multi‐channel
architecture,
high
theoretical
capacity,
and
precise
adjustability.
However,
the
low
conductivity
poor
structural
stability
lead
unsatisfactory
rate
cycling
performance,
greatly
hindering
practical
application.
Herein,
we
propose
sea
urchin‐like
Co‐ZIF‐L
superstructure
using
molecular
template
induce
self‐assembly
followed
by
ion
exchange
method,
which
shows
improved
conductivity,
successive
channels,
stability.
The
can
gradually
etch
superstructure,
leading
reconstruction
of
with
three‐dimensional
(3D)
cross‐linked
ultrathin
porous
nanosheets.
Moreover,
control
Co
Ni
ratios
construct
effective
micro‐electric
field
synergistically
enhance
rapid
transfer
electrons
electrolyte
ions,
improving
CoNi‐ZIF‐L.
6.53
Ni‐ZIF‐L
electrode
exhibits
specific
capacity
(602
F
g
−1
at
1
A
)
long
(95.3
%
retention
after
4,000
cycles
5
).
Ni‐ZIF‐L//AC
asymmetric
flexible
supercapacitor
employing
gel
also
excellent
(93.3
4000
This
discovery
provides
valuable
insights
material
selection
efficiency
improvement.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(36)
Опубликована: Июнь 17, 2024
Metal-organic
frameworks
(MOFs)
are
considered
as
a
promising
candidate
for
advancing
energy
storage
owing
to
their
intrinsic
multi-channel
architecture,
high
theoretical
capacity,
and
precise
adjustability.
However,
the
low
conductivity
poor
structural
stability
lead
unsatisfactory
rate
cycling
performance,
greatly
hindering
practical
application.
Herein,
we
propose
sea
urchin-like
Co-ZIF-L
superstructure
using
molecular
template
induce
self-assembly
followed
by
ion
exchange
method,
which
shows
improved
conductivity,
successive
channels,
stability.
The
can
gradually
etch
superstructure,
leading
reconstruction
of
with
three-dimensional
(3D)
cross-linked
ultrathin
porous
nanosheets.
Moreover,
control
Co
Ni
ratios
construct
effective
micro-electric
field
synergistically
enhance
rapid
transfer
electrons
electrolyte
ions,
improving
CoNi-ZIF-L.