Journal of Materials Chemistry A,
Год журнала:
2023,
Номер
12(3), С. 1725 - 1735
Опубликована: Дек. 11, 2023
Layered
vanadium
oxides
with
highly
open
crystal
structures
and
high
theoretical
capacity
are
regarded
as
the
most
promising
cathode
materials
for
high-performance
aqueous
zinc-ion
batteries
(ZIBs).
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 25, 2025
Abstract
The
electrostatic
interaction
between
zinc
ions
and
the
host
structure
significantly
limits
practicality
of
vanadium‐based
cathodes
in
aqueous
zinc‐ion
batteries
(AZIBs).
Herein,
an
anion
doping
strategy
is
demonstrated
to
mitigate
resistance
steric
hindrance
during
ion
insertion
by
incorporating
iodine
atoms
into
lattice
cathode
material,
Na
2
V
6
O
16
·3H
O.
Iodine
reduces
adsorption
energy
at
most
stable
site,
thereby
weakening
Zn
2+
‐host
lowering
diffusion
barrier,
resulting
a
one‐order‐of‐magnitude
increase
coefficient.
Moreover,
large
atomic
size
expands
lattice,
creating
ample
space
for
increased
storage
capacity,
further
supported
introduced
oxygen
vacancies.
As
result,
iodine‐doped
achieves
impressive
specific
capacity
528.8
mAh
g
−1
current
density
0.5
A
,
retains
262
after
12,000
cycles
high
rate
10
.
This
work
provides
new
insights
design
high‐performance
materials
AZIBs.
Abstract
Vanadium‐based
compounds
with
various
crystal
structures
are
highly
promising
cathode
materials
for
aqueous
zinc‐based
batteries.
However,
their
further
development
is
limited
due
to
the
low
electrical
conductivity,
slow
zinc
ion
diffusion,
and
weak
structural
stability.
It
a
feasible
strategy
resolve
above
mentioned
issues
through
surface
modification.
Herein,
we
design
bi‐phase
coexisting
CaV
2
O
6
/NaV
15
nanobelt
abundant
interfaces,
which
provide
more
reactive
sites
than
single‐phase
ones.
The
samples
as
electrode
deliver
specific
capacity
of
312
mAh
g
−1
at
5
A
after
2000
cycles.
They
still
keep
231
10
cycle
life
6500
times.
image
Multivalent-ion
batteries
have
garnered
significant
attention
as
promising
alternatives
to
traditional
lithium-ion
due
their
higher
charge
density
and
potential
for
sustainable
energy
storage
solutions.
Nevertheless,
the
slow
diffusion
of
multivalent
ions
is
primary
issue
with
electrode
materials
multivalent-ion
batteries.
In
this
review,
suitability
MXene-based
applications
explored,
focusing
onions
such
magnesium
(Mg