Chemical Science,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
Small
quinone
molecules
are
promising
cathode
materials
for
aqueous
zinc
batteries.
However,
they
experience
fast
capacity
decay
due
to
dissolution
in
electrolytes.
Herein,
we
introduce
a
simple
methyl
group
naphthoquinone
(NQ)
and
demonstrate
facile
self-saturation
strategy.
The
exhibits
hydrophobic
properties
together
with
light
weight
weak
electron-donation
effect,
which
allows
good
balance
among
cycling
stability,
voltage
materials.
resulting
menadione
(Me-NQ)
presents
around
one-third
solubility
of
NQ.
former
thus
rapidly
reaches
saturation
the
electrolyte
during
cycling,
suppresses
subsequent
dissolution.
Thanks
this
process,
Me-NQ
preserves
146
mA
h
g
Chemical Society Reviews,
Год журнала:
2024,
Номер
unknown
Опубликована: Янв. 1, 2024
This
review
presents
an
comprehensive
overview
of
various
advanced
aqueous
electrolytes
for
zinc-ion
batteries,
including
“water-in-salt”
electrolytes,
eutectic
molecular
crowding
and
hydrogel
electrolytes.
National Science Review,
Год журнала:
2024,
Номер
11(10)
Опубликована: Сен. 18, 2024
ABSTRACT
Given
their
high
safety,
environmental
friendliness
and
low
cost,
aqueous
zinc-ion
batteries
(AZIBs)
have
the
potential
for
high-performance
energy
storage.
However,
issues
with
structural
stability
electrochemical
kinetics
during
discharge/charge
limit
development
of
AZIBs.
In
this
study,
vanadium
oxide
electrodes
organic
molecular
intercalation
were
designed
based
on
intercalating
11
kinds
charged
carboxylic
acid
ligands
between
2D
layers
to
regulate
interlayer
spacing.
The
negatively
group
can
neutralize
Zn2+,
reduce
electrostatic
repulsion
enhance
kinetics.
intercalated
molecules
increased
Among
them,
0.028EDTA
·
0.28NH4+
V2O5
0.069H2O
was
employed
as
cathode
a
specific
capacity
(464.6
mAh
g−1
at
0.5
A
g−1)
excellent
rate
performance
(324.4
10
g−1).
Even
current
density
20
g−1,
after
2000
charge/discharge
cycles
215.2
(capacity
retention
78%).
results
study
demonstrate
that
modulation
spacing
through
properties
vanadium-based
materials.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 19, 2025
Abstract
1,4‐naphthoquinone
(NQ)
is
anticipated
to
emerge
as
a
promising
electrode
material
for
designing
high‐performance
aqueous
proton
batteries
(APBs),
attributed
its
high
theoretical
capacity
and
flexible
designability.
However,
solubility
sluggish
kinetics
are
not
conducive
long‐term
cycling
stability
high‐rate
capability.
Herein,
unique
molecular
structure
design
strategy
proposed
construct
effective
p‐π
conjugated
structures
by
inducing
the
p‐electrons
in
substituent
groups
𝜋‐electrons
on
naphthalene
rings.
Theoretical
calculations
experimental
results
indicate
that
conjugation
effect
of
2,3‐dichloro‐1,4‐naphthoquinone
(2Cl‐NQ)
1‐hydroxy‐1,4‐naphthoquinone
(1OH‐NQ)
greatly
reduces
polarity
expands
π‐conjugate
system,
which
endows
them
with
minimal
superior
structural
stability,
thereby
achieving
excellent
99.53%
98.62%
retention
after
1800
cycles,
respectively.
Moreover,
induce
narrowed
bandgap,
improving
electronic
conductivity
redox
kinetics,
significantly
enhancing
their
rate
When
coupling
perylene‐3,4,9,10‐tetracarboxylic
dianhydride
(PTCDA)
anode,
full
battery
2Cl‐NQ//PTCDA
exhibits
specific
173
mAh
g
−1
at
15
A
,
maintaining
73.2%
40
000
cycles
demonstrating
exceptional
performance
even
−20
°C.
This
work
provides
valuable
insights
guidance
energy
storage
materials
APBs.
Angewandte Chemie,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
Abstract
Matrix
immobilization
has
been
proven
to
be
a
favored
method
for
enhancing
the
phosphorescence
of
carbon
dots
(CDs),
however,
it
remains
significant
challenge
realize
time‐dependent
colors
(TDPC)
by
embedding
CDs
with
single
emission
center.
In
this
study,
we
present
novel
matrix‐controlling
strategy
regulate
microenvironment
doping
limited
Mn
2+
in
zeolite.
The
surrounding
environment
influences
surface
state
CDs,
leading
formation
different
excitons.
At
low
temperatures,
Mn‐coordinated
(C‐CDs)
show
fast‐decaying
green
phosphorescence,
while
non‐coordinated
(NC‐CDs)
exhibit
inherent
slow‐decaying
blue
phosphorescence.
Notably,
energy
transfer
occurs
between
NC‐CDs
and
produce
an
ultrafast‐decaying
red
intensity
component
increasing
as
temperature
rises.
interplay
these
luminescent
centers
distinct
decay
rates
activates
fascinating
multi‐mode
TDPC
behavior
changes,
resulting
dynamic
afterglow
evolutions
from
at
298
K,
orange
273
cyan
77
K.
Leveraging
diverse
luminescence
CDs@MnAPO‐5,
multi‐dimensional
color
pattern
was
developed
advanced
anti‐counterfeiting
applications.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 19, 2024
Abstract
Matrix
immobilization
has
been
proven
to
be
a
favored
method
for
enhancing
the
phosphorescence
of
carbon
dots
(CDs),
however,
it
remains
significant
challenge
realize
time‐dependent
colors
(TDPC)
by
embedding
CDs
with
single
emission
center.
In
this
study,
we
present
novel
matrix‐controlling
strategy
regulate
microenvironment
doping
limited
Mn
2+
in
zeolite.
The
surrounding
environment
influences
surface
state
CDs,
leading
formation
different
excitons.
At
low
temperatures,
Mn‐coordinated
(C‐CDs)
show
fast‐decaying
green
phosphorescence,
while
non‐coordinated
(NC‐CDs)
exhibit
inherent
slow‐decaying
blue
phosphorescence.
Notably,
energy
transfer
occurs
between
NC‐CDs
and
produce
an
ultrafast‐decaying
red
intensity
component
increasing
as
temperature
rises.
interplay
these
luminescent
centers
distinct
decay
rates
activates
fascinating
multi‐mode
TDPC
behavior
changes,
resulting
dynamic
afterglow
evolutions
from
at
298
K,
orange
273
cyan
77
K.
Leveraging
diverse
luminescence
CDs@MnAPO‐5,
multi‐dimensional
color
pattern
was
developed
advanced
anti‐counterfeiting
applications.
