Nano-Micro Letters,
Год журнала:
2023,
Номер
16(1)
Опубликована: Ноя. 13, 2023
Abstract
Organic
electrode
materials
are
promising
for
batteries.
However,
the
reported
organic
electrodes
often
facing
challenges
of
low
specific
capacity,
voltage,
poor
rate
capability
and
vague
charge
storage
mechanisms,
etc.
Isomers
good
platform
to
investigate
mechanisms
enhance
performance
batteries,
which,
however,
have
not
been
focused
in
Herein,
two
isomers
As
a
result,
isomer
tetrathiafulvalene
(TTF)
could
store
monovalent
anions
reversibly,
deriving
an
average
discharge
voltage
1.05
V
capacity
220
mAh
g
−1
at
current
density
2
C.
On
other
hand,
tetrathianaphthalene
only
reversibly
one
anion
upon
further
oxidation,
it
would
undergo
irreversible
solid-state
molecular
rearrangement
TTF.
The
was
confirmed
by
electrochemical
performances,
X-ray
diffraction
patterns,
nuclear
magnetic
resonance
spectra,
1
H
detected
heteronuclear
multiple
bond
correlation
spectra.
These
results
suggested
small
structural
change
lead
big
difference
storage,
we
hope
this
work
will
stimulate
more
attention
design
boosting
Advanced Materials,
Год журнала:
2023,
Номер
35(22)
Опубликована: Апрель 10, 2023
Organic
materials
have
attracted
much
attention
in
aqueous
zinc-ion
batteries
(AZIBs)
due
to
their
sustainability
and
structure-designable,
but
further
development
is
hindered
by
the
high
solubility,
poor
conductivity,
low
utilization
of
active
groups,
resulting
cycling
stability,
terrible
rate
capability,
capacity.
In
order
solve
these
three
major
obstacles,
a
novel
organic
host,
benzo[b]naphtho[2',3':5,6][1,4]dithiino[2,3-i]thianthrene-5,7,9,14,16,18-hexone
(BNDTH),
with
abundant
electroactive
groups
stable
extended
π-conjugated
structure
synthesized
composited
reduced
graphene
oxide
(RGO)
through
solvent
exchange
composition
method
act
as
cathode
material
for
AZIBs.
The
well-designed
BNDTH/RGO
composite
exhibits
capacity
296
mAh
g-1
(nearly
full
groups),
superior
capability
120
,
long
lifetime
58
000
cycles
retention
65%
at
10
A
.
Such
excellent
performance
can
be
attributed
ingenious
structural
design
molecule,
well
unique
strategy
that
enables
effective
dispersion
excess
charge
on
molecule
during
discharge/charge
process.
This
work
provides
important
insights
rational
has
significant
guidance
realizing
ideal
Advanced Functional Materials,
Год журнала:
2023,
Номер
33(47)
Опубликована: Июль 8, 2023
Abstract
Organic
cathodes
for
aqueous
zinc‐ion
batteries
(AZIBs)
feature
intrinsic
flexibility
and
favorable
kinetics,
but
they
suffer
from
high
solubility.
Herein,
a
partial
charge
regulation
strategy
is
deployed
by
designing
small
organic
molecule
with
extended
π
‐conjugated
plane,
namely
benzo[i]benzo[6′,7′]quinoxalino[2′,3′:9,10]phenanthro[4,5‐abc]phenazine‐5,10,16,21‐tetraone
(PTONQ).
The
equalization
of
active
sites
induced
the
plane
PTONQ
combined
aromaticity
renders
low
solubility,
fast
transfer,
structural
stability.
fabricated
Zn//PTONQ
battery
cycles
more
than
500
h
at
175
mA
g
−1
capacity
reduction,
charged/discharged
anti‐freeze
performance
(below
‐20°C).
By
series
ex
situ
characterizations,
it
attested
that
originates
mainly
Zn
2+
insertion/removal
without
H
+
incorporation,
which
also
accounts
formation
x
(CF
3
SO
)
y
(OH)
2x‐y
·nH
2
O
by‐products.
This
result
benefits
understanding
by‐product
mechanism
cathode
paves
new
way
to
advance
Zn‐organic
batteries.
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Фев. 2, 2024
Aqueous
rechargeable
Zn-metal
batteries
(ARZBs)
are
considered
one
of
the
most
promising
candidates
for
grid-scale
energy
storage.
However,
their
widespread
commercial
application
is
largely
plagued
by
three
major
challenges:
The
uncontrollable
Zn
dendrites,
notorious
parasitic
side
reactions,
and
sluggish
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
are
gaining
popularity
for
their
cost‐effectiveness,
safety,
and
utilization
of
abundant
resources.
MXenes,
which
possess
outstanding
conductivity,
controllable
surface
chemistry,
structural
adaptability,
widely
recognized
as
a
highly
versatile
platform
AZIBs.
MXenes
offer
unique
set
functions
AZIBs,
yet
significance
has
not
been
systematically
summarized.
This
review
article
provides
an
up‐to‐date
overview
MXenes‐based
electrode
materials
with
focus
on
the
in
these
materials.
The
discussion
starts
derivatives
cathode
side,
where
they
serve
2D
conductive
substrate,
3D
framework,
flexible
support,
coating
layer.
can
act
both
active
material
precursor
to
cathode.
On
anode
include
host,
zinc
metal
protection,
electrolyte
additive,
separator
modification.
also
highlights
technical
challenges
key
hurdles
that
currently
face
Nano-Micro Letters,
Год журнала:
2024,
Номер
16(1)
Опубликована: Май 14, 2024
Aqueous
zinc-ion
batteries
(AZIBs)
are
one
of
the
most
compelling
alternatives
lithium-ion
due
to
their
inherent
safety
and
economics
viability.
In
response
growing
demand
for
green
sustainable
energy
storage
solutions,
organic
electrodes
with
scalability
from
inexpensive
starting
materials
potential
biodegradation
after
use
have
become
a
prominent
choice
AZIBs.
Despite
gratifying
progresses
molecules
electrochemical
performance
in
AZIBs,
research
is
still
infancy
hampered
by
certain
issues
underlying
complex
electrochemistry.
Strategies
designing
electrode
AZIBs
high
specific
capacity
long
cycling
life
discussed
detail
this
review.
Specifically,
we
put
emphasis
on
unique
electrochemistry
different
redox-active
structures
provide
in-depth
understanding
working
mechanisms.
addition,
highlight
importance
molecular
size/dimension
regarding
profound
impact
performances.
Finally,
challenges
perspectives
developing
point
view
future
We
hope
valuable
evaluation
our
context
give
inspiration
rational
design
high-performance
Journal of Materials Chemistry A,
Год журнала:
2024,
Номер
12(21), С. 12818 - 12825
Опубликована: Янв. 1, 2024
A
superior
molecular
design
allows
a
bipolar
conjugated
microporous
polymer
to
be
firmly
anchored
on
the
rGO
surface.
The
unique
anchoring
structure
realizes
alternate
Zn
2+
/CF
3
SO
−
ion
storage
while
providing
high
capacity
and
an
ultra-long
lifespan
for
zinc–organic
batteries.
