Molecules,
Journal Year:
2024,
Volume and Issue:
29(24), P. 5906 - 5906
Published: Dec. 14, 2024
Nickel
disulfide
(NiS2)
nanoparticles
are
encapsulated
within
nitrogen
and
sulfur
co-doped
carbon
nanosheets,
which
grown
onto
nanofibers
to
form
an
array
structure
(NiS2/C@CNF),
resulting
in
a
self-supporting
film.
This
not
only
prevents
the
agglomeration
of
NiS2
nanoparticles,
but
also
memorably
buffers
its
volume
changes
during
charge/discharge
cycles,
thereby
maintaining
structural
integrity.
The
co-doping
enhances
electronic
conductivity
facilitates
faster
ion
transport
backbone,
improving
low
NiS2/C@CNF
anodes.
Consequently,
electrode
exhibits
remarkable
rate
ability,
reaching
55.4%
capacity
at
5
A
g−1
compared
that
0.1
g−1,
alongside
impressive
cycling
stability,
with
89.9%
retention
over
1500
cycles
2
g−1.
work
underscores
efficacy
3D
backbone
encapsulation
strategy
for
enhancing
sodium
storage
property
transition
metal-based
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
Carbon
materials
are
the
promising
cathode
material
for
sodium‐ion
capacitors
(SICs)
with
high
energy/power
density,
however,
clarifying
evolution
processes
of
functional
groups
in
carbon
and
revealing
their
energy
storage
mechanisms
full
challenges.
Inspired
by
ancient
practice
alchemy,
which
sought
to
purify
Dan
medicine
remove
impurities
through
precise
control
refining
temperature,
local
oxygen
reconstruction
strategy,
alter
species
SP
3
‐C,
is
pioneeringly
utilized,
achieving
targeted
regulation
carbonyl
increase
from
27.9
43.3
at%,
efficiently
change
electronic
structure
framework
realize
dual‐ion
adsorption
Na
+
ClO
4
−
,
according
well
theoretical
calculations.
As
expected,
obtained
delivers
a
specific
capacity
145
mAh
g
−1
higher
than
that
parent
(95
).
Impressively,
ex
situ
X‐ray
Photoelectron
Spectroscopy
Raman
reveals
can
act
as
active
sites
pseudocapacitive
behavior
under
different
voltage
states.
Notably,
assembled
SIC
using
carbonyl‐rich
exhibits
an
ultrahigh
density
162
Wh
kg
.
This
work
opens
novel
avenue
regulating
content
materials.
Molecules,
Journal Year:
2024,
Volume and Issue:
29(24), P. 5906 - 5906
Published: Dec. 14, 2024
Nickel
disulfide
(NiS2)
nanoparticles
are
encapsulated
within
nitrogen
and
sulfur
co-doped
carbon
nanosheets,
which
grown
onto
nanofibers
to
form
an
array
structure
(NiS2/C@CNF),
resulting
in
a
self-supporting
film.
This
not
only
prevents
the
agglomeration
of
NiS2
nanoparticles,
but
also
memorably
buffers
its
volume
changes
during
charge/discharge
cycles,
thereby
maintaining
structural
integrity.
The
co-doping
enhances
electronic
conductivity
facilitates
faster
ion
transport
backbone,
improving
low
NiS2/C@CNF
anodes.
Consequently,
electrode
exhibits
remarkable
rate
ability,
reaching
55.4%
capacity
at
5
A
g−1
compared
that
0.1
g−1,
alongside
impressive
cycling
stability,
with
89.9%
retention
over
1500
cycles
2
g−1.
work
underscores
efficacy
3D
backbone
encapsulation
strategy
for
enhancing
sodium
storage
property
transition
metal-based
