Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Abstract
As
a
promising
power
supplier,
flexible
aqueous
zinc
ion
batteries
(AZIBs)
have
drawn
great
attention
and
been
demonstrated
potential
applications
in
portable
electronic
devices,
yet
their
capacity,
stability,
rate
performance
are
severely
limited
by
cathode
materials.
Herein,
spontaneous
encapsulation
situ
phase
transformation
strategy
is
proposed
for
the
construction
of
heterostructured
amorphous
vanadium
oxide@carbon/graphene
(A‐VO
x
@C/G)
nanoplates
as
highly
stable
efficient
materials
Zn
2+
storage.
In
this
design,
A‐VO
provides
abundant
active
sites
with
rapid
diffusion
channels
robust
tolerance
against
insertion/extraction,
while
N‐doped
carbon
interlaced
graphene
network
ensure
electron
transfer.
The
mechanisms
respectively
during
electrochemical
amorphization
charge
storage
cycling
investigated
detail.
as‐prepared
@C/G
achieves
an
outstanding
429
mAh
g
−1
at
0.5
A
,
73%
retained
20
(315
),
excellent
stability
over
2000
cycles
(91%
retention).
Moreover,
quasi‐solid‐state
AZIBs
assembled
from
exhibit
high
flexibility
can
sustain
large
mechanical
deformation
without
degradation.
It
believed
that
study
guideline
toward
designing
high‐performance
through
structure
optimization.
Advanced Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 13, 2025
Abstract
Conventional
electrolytes
in
aqueous
zinc‐iodine
batteries
struggle
to
suppress
the
shuttle
effect
and
enhance
interfacial
stability,
resulting
high
self‐discharge
rate,
low
areal
capacity,
short
cycle
life.
To
address
these
issues,
a
dual‐confinement
hydrogel
electrolyte
(DCHE)
is
designed
simultaneously
stabilize
iodine
cathode
zinc
anode
at
capacities
via
functionally
segregated
ion
regulation
strategy.
As
for
cathode,
anion‐functional
groups
DCHE
repel
polyiodides,
while
cation‐functional
adsorb
those
that
escape
repulsion,
thereby
reinforcing
suppression
of
polyiodide
migration
toward
anode.
This
dual
confinement
effect,
validated
by
theoretical
simulations
situ
characterization,
effectively
mitigates
effect.
Additionally,
hydrophilic
zincophilic
functional
regulate
hydrogen‐bond
network
Zn
2+
flux,
strengthening
electrochemical
stability
result,
Zn//ZnI
2
cell
assembled
with
delivers
practical
capacity
4.5
mAh
cm
−2
achieves
record‐long
lifespan
exceeding
6000
h
88.9%
retention
100
mA
g
−1
.
Furthermore,
single‐layer
pouch
exhibits
good
mechanical
retaining
80%
its
after
cycles
90°
bending.
work
highlights
importance
advancing
high‐performance
batteries.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 26, 2024
Abstract
As
a
promising
power
supplier,
flexible
aqueous
zinc
ion
batteries
(AZIBs)
have
drawn
great
attention
and
been
demonstrated
potential
applications
in
portable
electronic
devices,
yet
their
capacity,
stability,
rate
performance
are
severely
limited
by
cathode
materials.
Herein,
spontaneous
encapsulation
situ
phase
transformation
strategy
is
proposed
for
the
construction
of
heterostructured
amorphous
vanadium
oxide@carbon/graphene
(A‐VO
x
@C/G)
nanoplates
as
highly
stable
efficient
materials
Zn
2+
storage.
In
this
design,
A‐VO
provides
abundant
active
sites
with
rapid
diffusion
channels
robust
tolerance
against
insertion/extraction,
while
N‐doped
carbon
interlaced
graphene
network
ensure
electron
transfer.
The
mechanisms
respectively
during
electrochemical
amorphization
charge
storage
cycling
investigated
detail.
as‐prepared
@C/G
achieves
an
outstanding
429
mAh
g
−1
at
0.5
A
,
73%
retained
20
(315
),
excellent
stability
over
2000
cycles
(91%
retention).
Moreover,
quasi‐solid‐state
AZIBs
assembled
from
exhibit
high
flexibility
can
sustain
large
mechanical
deformation
without
degradation.
It
believed
that
study
guideline
toward
designing
high‐performance
through
structure
optimization.
