Construction of High‐Performance Anode of Potassium‐Ion Batteries by Stripping Covalent Triazine Frameworks with Molten Salt
Advanced Science,
Год журнала:
2024,
Номер
11(32)
Опубликована: Июнь 26, 2024
Abstract
Covalent
triazine
frameworks
(CTFs)
are
promising
battery
electrodes
owing
to
their
designable
functional
groups,
tunable
pore
sizes,
and
exceptional
stability.
However,
practical
use
is
limited
because
of
the
difficulty
in
establishing
stable
ion
adsorption/desorption
sites.
In
this
study,
a
melt‐salt‐stripping
process
utilizing
molten
trichloro
iron
(FeCl
3
)
used
delaminate
layer‐stacked
structure
fluorinated
covalent
framework
(FCTF)
generate
iron‐based
storage
active
This
increases
interlayer
spacing
uniformly
deposits
iron‐containing
materials,
enhancing
electron
transport.
The
resultant
melt‐FeCl
‐stripped
FCTF
(Fe@FCTF)
shows
excellent
performance
as
potassium
with
high
capacity
447
mAh
g
−1
at
0.1
A
257
1.6
good
cycling
Notably,
molten‐salt
stripping
also
effective
improving
CTF's
Na
+
Li
properties.
stepwise
reaction
mechanism
K/Na/Li
chelation
C═N
groups
proposed
verified
by
situ
X‐ray
diffraction
testing
(XRD),
ex‐situ
photoelectron
spectroscopy
(XPS),
theoretical
calculations,
illustrating
that
pyrazines
coordination
play
main
roles
reacting
K
/Na
/Li
cations.
These
results
conclude
Fe@FCTF
suitable
anode
material
for
potassium‐ion
batteries
(PIBs),
sodium‐ion
(SIBs),
lithium‐ion
(LIBs).
Язык: Английский
Electrochemical behavior and reaction mechanism of nano-BiOBr/rGO composite micro flower with strong interface coupling as potassium-ion battery anodes
Yuan Wei,
Yang Qin,
Mingqi Li
и другие.
Journal of Colloid and Interface Science,
Год журнала:
2024,
Номер
679, С. 1 - 9
Опубликована: Сен. 27, 2024
Язык: Английский
Facile Preparation of MoS2/Few Layer Graphene Composites by Plasma-enhanced Ball Milling for Potassium-ion Batteries
Electrochimica Acta,
Год журнала:
2025,
Номер
unknown, С. 146117 - 146117
Опубликована: Март 1, 2025
Язык: Английский
A needle-like covalent organic framework with highly accessible phenazine and π-conjugated structure for potassium storage and its reaction mechanism
Energy storage materials,
Год журнала:
2024,
Номер
73, С. 103849 - 103849
Опубликована: Окт. 18, 2024
Язык: Английский
Topological Defect‐Regulated Porous Carbon Nanoribbon for High‐Performance Potassium‐Ion Batteries
Small,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 28, 2024
Abstract
Potassium‐ion
batteries
(PIBs)
using
carbonaceous
anode
materials
have
attracted
a
great
deal
of
research
interest.
However,
the
large
atomic
size
potassium
ions
inevitably
leads
to
huge
volume
expansion
and
collapse
anodes
during
intercalation,
which
greatly
hinders
rate
performance
cycling
life.
In
this
work,
carbon
nanotube‐derived
porous
N‐doped
nanoribbon
(CNR)
bundles
are
designed
as
an
for
PIBs.
These
CNR
in
rich
defects
provide
fast
channels
charge
transport
abundant
active
sites
ion
storage.
The
exhibit
maximum
capacity
441.4
mA
h
g
−1
at
current
density
0.2
A
after
200
cycles
well
highly
reversible
263.6
5.0
even
1000
cycles.
This
work
provides
guidance
structure
design
high‐performance
Язык: Английский