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
Materials Chemistry Frontiers,
Год журнала:
2023,
Номер
7(14), С. 2731 - 2749
Опубликована: Янв. 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.
Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
11(27), С. 14921 - 14932
Опубликована: Янв. 1, 2023
A
bio-inspired
electrolyte
was
first
designed
with
tetraethyl
orthosilicate
(TEOS)
additive
as
a
“healing
agent”
to
in
situ
repair
the
Zn
surface
crack
and
modulate
2+
solvation
chemistry,
rendering
long-life
deep-cycling
metal
anodes.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(22)
Опубликована: Апрель 9, 2024
Abstract
The
commercialization
of
aqueous
Zn‐ion
batteries
(AZIBs)
for
power‐grid
energy
storage
systems
is
hindered
by
the
safety
concerns
arising
from
Zn
dendrite
growth.
primary
approach
in
addressing
this
issue
to
induce
planar
depositions.
However,
modulating
dissolution
process
which
directly
reshapes
surface
morphology
and
reserves
growth
sites
has
long
been
overlooked.
Herein,
utilizing
ester
compounds
as
an
illustration,
it
revealed
that
engineering
barrier
a
pivotal
factor
promoting
homogeneous
dissolution.
Ester
adsorbents
effectively
redistribute
charge
densities
at
electrode–electrolyte
interface
due
presence
zincophilic
functional
group
conductive
π‐conjugation
structure.
This
effect
eventually
facilitates
across
surface,
transforming
potholed
defective
into
smooth
consistent
form.
Thus,
enhanced
cycling
stability
can
be
achieved
both
half‐cells
full‐cells,
offering
extensive
lifespan
thousands
hours
deposition
cycles.
work
provides
principle
selection
improvers
suppress
metal
regulating
behavior.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(19)
Опубликована: Март 7, 2024
Abstract
The
low
specific
capacity
determined
by
the
limited
electron
transfer
of
p‐type
cathode
materials
is
main
obstruction
to
their
application
towards
high‐performance
aqueous
zinc‐ion
batteries
(ZIBs).
To
overcome
this
challenge,
boosting
multi‐electron
essential
for
improving
charge
storage
capacity.
Here,
as
a
typical
heteroaromatic
material,
we
unveil
unique
reversible
two‐electron
redox
properties
phenoxazine
in
electrolytes
first
time.
second
oxidation
process
stabilized
electrolytes,
notable
contrast
its
less
reversibility
non‐aqueous
electrolytes.
A
comprehensive
investigation
chemistry
mechanism
demonstrates
remarkably
stable
intermediates,
including
cation
radical
PNO⋅
+
characterized
effective
delocalization
and
closed‐shell
state
dication
PNO
2+
.
Meanwhile,
heightened
aromaticity
contributes
superior
structural
stability
during
process,
distinguishing
it
from
phenazine,
which
features
non‐equivalent
hybridized
sp
2
‐N
motif.
Leveraging
these
synergistic
advantages,
electrodes
deliver
high
215
mAh
g
−1
compared
other
materials,
impressive
long
cycling
with
100
%
retention
over
3500
cycles.
This
work
marks
crucial
step
forward
advanced
organic
based
on
moieties
ZIBs.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(6), С. 7806 - 7818
Опубликована: Фев. 5, 2024
As
the
electrode
of
a
supercapacitor,
polypyrrole
(PPy)
inevitably
suffers
from
structural
rupture
during
repeated
doping/dedoping
processes
and
releases
low
practical
capacitance
due
to
large
amount
aggregation
or
cross-linking
in
PPy
chains.
The
coupling
mode
(α–α,
α–β,
β–β
coupling)
pyrroles
is
critical
conjugated
structure,
conductivity,
cycling
stability
PPy.
Here,
we
prepared
an
α–α
coupling-dominated
film
via
simple
frozen
interfacial
polymerization.
with
nanostructure
exposes
more
electrochemical
active
sites
for
electrode,
which
can
enhance
capacitance.
high
proportion
results
degree
π-conjugation
planar
structure
that
effectively
improve
reversible
ion
transport
efficiency
promote
uniform
stress
distribution
charge
discharge
process.
assembled
symmetric
water-based
supercapacitor
delivers
specific
267.1
F
g–1
at
1
A
266.7
5
exhibits
outstanding
performance
above
200
even
after
60,000
cycles.
