Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 25, 2025
Abstract
Covalent
organic
frameworks
(COFs)
hold
great
potential
in
sodium‐ion
battery
cathodes.
However,
most
reported
COF‐based
electrodes
show
unsatisfying
capacity
and
rate
performance
due
to
their
limited
redox
site
density,
low
crystallinity,
poor
conductivity.
Herein,
a
highly
crystalline
robust
donor‐acceptor
type
COF
with
abundant
active
sites
is
developed
by
the
polymerization
of
donor
unit
benzo[1,2‐b:3,4‐b″:5,6‐b″']trithiophene‐2,5,8‐tricarbaldehyde)
(BTT)
acceptor
s‐indacene‐1,3,5,7(2H,6H)‐tetrone
(ICTO)
(denoted
as
BTT‐ICTO)
for
cathodic
Na
+
storage.
The
BTT‐ICTO‐graphene
composites
(BTT‐ICTO@G)
synthesized
situ
growth
have
loose
sheet
structure
rough
surfaces,
contributing
improved
conductivity
utilization
BTT‐ICTO.
Benefiting
from
robustness
BTT‐ICTO
linked
ethylene
bonds,
BTT‐ICTO@G
cathodes
exhibit
high
325
mAh
g
−1
at
0.1
A
80%,
excellent
190
5.0
,
exceptional
cycle
performances
196
over
10
000
cycles
2.0
only
0.0015%
decay
per
cycle.
These
properties
make
among
best‐reported
In
addition,
Raman,
ex
Fourier
transform
infrared,
theoretical
calculations
disclose
reaction
pathway
Materials Chemistry Frontiers,
Journal Year:
2023,
Volume and Issue:
7(14), P. 2731 - 2749
Published: Jan. 1, 2023
Advances
in
organic
cathode
materials
for
aqueous
multivalent
metal-ion
storage
are
briefly
reviewed
realizing
more
sustainable,
affordable,
and
high-performance
electrochemical
energy
storage.
Angewandte Chemie International Edition,
Journal Year:
2024,
Volume and Issue:
63(47)
Published: July 24, 2024
Abstract
Covalent
organic
frameworks
(COFs)
hold
great
promise
for
rechargeable
batteries.
However,
the
synthesis
of
COFs
with
abundant
active
sites,
excellent
stability,
and
increased
conductivity
remains
a
challenge.
Here,
chemically
stable
fully
sp
2
carbon‐conjugated
(sp
c‐COFs)
multiple
sites
are
designed
by
polymerization
benzo[1,2‐b:3,4‐b′:5,6‐b′′]trithiophene‐2,5,8‐tricarbaldehyde)
(BTT)
s‐indacene‐1,3,5,7(2H,6H)‐tetrone
(ICTO)
(denoted
as
BTT‐ICTO).
The
morphology
structure
COF
precisely
regulated
from
“butterfly‐shaped”
to
“cable‐like”
through
an
in
situ
controllable
growth
strategy,
significantly
promoting
exposure
utilization
sites.
When
unique
BTT‐ICTO@CNT
is
employed
lithium‐ion
batteries
(LIBs)
cathode,
it
exhibits
exceptional
capacity
(396
mAh
g
−1
at
0.1
A
97.9
%
rate),
superb
rate
(227
5.0
),
cycling
performance
(184
over
8000
cycles
2.0
0.00365
decay
per
cycle).
lithium
storage
mechanism
BTT‐ICTO
exhaustively
revealed
Fourier
transform
infrared,
Raman,
density
functional
theory
calculations.
This
work
provides
in‐depth
insights
into
c‐COFs
high‐performance
LIBs.
InfoMat,
Journal Year:
2023,
Volume and Issue:
5(11)
Published: Sept. 19, 2023
Abstract
The
high
demand
for
critical
minerals
such
as
lithium,
copper,
nickel,
and
cobalt,
required
lithium‐ion
batteries,
has
raised
questions
regarding
the
feasibility
of
maintaining
a
steady
affordable
supply
raw
materials
their
production.
In
last
years,
researchers
have
shifted
attention
toward
organic
materials,
which
are
potentially
more
widely
available,
affordable,
sustainable
due
to
ubiquitous
presence
constituent
elements.
n‐type
redox
mechanism
analogous
that
cathodes
anodes,
hence
they
suitable
meaningful
comparison
with
state‐of‐the‐art
technology.
While
many
reviews
evaluated
properties
at
material
or
electrode
level,
herein,
assessed
in
complex
system,
full
battery,
evaluate
performance
these
commercial‐scale
battery
systems.
most
relevant
cathode
batteries
reviewed,
detailed
cost
analysis
material‐based
packs
using
BatPaC
5.0
software
is
presented.
considers
influence
design
choices,
conductive
carbon
content,
active
mass
loading,
density,
on
energy
density
cost.
potential
low‐cost
solution
storage
applications
highlighted,
while
emphasizing
need
further
advancements
applications.
image
Journal of Colloid and Interface Science,
Journal Year:
2024,
Volume and Issue:
665, P. 286 - 298
Published: March 20, 2024
Tailoring
porous
host
materials,
as
an
effective
strategy
for
storing
sulfur
and
restraining
the
shuttling
of
soluble
polysulfides
in
electrolyte,
is
crucial
design
high-performance
lithium-sulfur
(Li-S)
batteries.
However,
widely
studied
conductive
hosts
such
mesoporous
carbon,
how
aspect
ratio
affects
confining
ability
to
polysulfides,
ion
diffusion
well
performances
Li-S
batteries
has
been
rarely
studied.
Herein,
ordered
carbon
(OMC)
chosen
a
proof-of-concept
prototype
host,
its
tuned
from
over
∼
2
down
below
1.2
by
using
silica
hard
templates
with
variable
length/width
scales.
The
correlation
between
OMCs
electrochemical
corresponding
sulfur-carbon
cathodes
are
systematically
combined
measurements
microscopic
characterizations.
Moreover,
evolution
species
at
different
discharge
states
scrutinized
small-angle
X-ray
scattering.
This
study
gives
insight
into
effects
on
battery
cathodes,
providing
guidelines
designing
materials
high-energy
cathodes.
Langmuir,
Journal Year:
2023,
Volume and Issue:
39(29), P. 10270 - 10279
Published: July 13, 2023
The
bilayer
borophene
has
been
successfully
fabricated
in
experiments
recently
and
possesses
superior
antioxidation
robust
metallic
properties,
which
holds
great
promise
for
the
future
anode
materials
of
Li-ion
batteries.
Herein,
using
first-principles
calculations,
two
borophenes
including
P6/mmm
or
P6̅m2
symmetry
groups
with
without
vacancy
defects
are
comprehensively
explored
acted
as
electrode
high
performance
charge
density
difference,
adsorption
energies,
Bader
analysis
calculated
discussed
single
lithium
adsorbed
on
borophene.
results
shown
that
increase
concentration,
energies
rapidly
decreased
due
to
repulsion
boron
atoms
except
systems
double
side
corresponding
remain
narrow
range.
Meanwhile,
partial
states
shows
character
after
indicates
good
conductivity
charge-discharge
process.
Furthermore,
small
diffusion
barriers,
low
average
open-circuit
voltage,
can
be
achieved,
large
storage
capacity
is
up
930.2
mA
h/g
at
lower
content
0.375.
These
propose
might
a
choice
material
applications
batteries
fast
ion
power
density.
