Aqueous
zinc-ion
batteries
(AZIBs)
are
emerging
as
a
promising
candidate,
enjoying
accolades
for
their
safety,
low
cost,
and
ease
of
operation.
However,
some
challenges
like
the
slow
kinetics
structural
collapse
cathode
materials
hamper
rate
capability
cyclability.
To
address
these
limitations,
heterogeneous
Mn(VO3)2/NaVO3
(MNVO)
nanoribbon
hybrid
was
designed
high-performance
cathodes
zinc
storage.
Owing
to
heterointerface
between
Mn(VO3)2
NaVO3
boosting
charge-transfer
leading
enhanced
diffusion
kinetics,
MNVO
exhibits
high
specific
capacity
381.2
mAh
g-1
at
0.2
A
g-1,
(286.7
5
g-1),
excellent
electrochemical
kinetics.
Additionally,
stable
cyclability
(a
high-capacity
retention
95.7
%
1
after
200
cycles)
long-term
83.0
2000
cycles).
Moreover,
storage
mechanism
co-intercalation
Zn2+
H2O
into
host
were
investigated
by
ex
situ
XRD
XPS
characterizations.
Our
work
offers
new
insight
understanding
development
through
constructing
structure.
Batteries,
Journal Year:
2024,
Volume and Issue:
10(3), P. 97 - 97
Published: March 11, 2024
Despite
features
of
cost-effectiveness,
high
safety,
and
superior
capacity,
aqueous
zinc-ion
batteries
(ZIBs)
have
issues
uncontrolled
dendritic
cell
failure
poor
Zn
utilization,
resulting
in
inferior
cycling
reversibility.
Herein,
the
environmentally
friendly
naturally
abundant
sodium
citrate
(SC)
was
adopted
as
a
dual-functional
additive
for
ZnSO4-based
(ZSO)
electrolytes.
Owing
to
hydrogen-bond
donors
acceptors
SC,
Zn2+-solvation
shell
is
interrupted
facilitate
desolvation,
inhibited
corrosion
reactions.
Additionally,
ions
(Na+)
from
SC
with
lower
effective
reduction
potential
than
that
zinc
(Zn2+)
form
an
electrostatic
shield
inhibiting
formation
initial
surface
protuberances
subsequent
dendrite
growth.
This
assists
three-dimensional
(3D)
diffusion
deposition,
thereby
effectively
enhancing
stability.
Specifically,
long
lifespan
(more
760
h)
Zn//Zn
symmetric
achieved
2
M
ZSO-1.0
electrolyte
at
current
density
1
mA
cm−2.
When
coupled
NaV3O8·1.5
H2O
(NVO)
cathode,
full
battery
containing
exhibited
capacity
retention
rate
(40.0%)
life
400
cycles
A
g−1
compared
pure
ZnSO4
(23.8%).
work
provides
protocol
selecting
achieve
solvation
regulation
anode
protection
practical
large-scale
application
ZIBs.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(19), P. 24723 - 24733
Published: May 2, 2024
We
demonstrated
the
use
of
hydrated
calcium
vanadate
(CaV6O16·3H2O,
denoted
as
CaVO-2)
a
cathode
for
aqueous
zinc-ion
batteries
(AZIBs).
Nanoribbons
facilitated
shortening
Zn2+
transport
distance
and
accelerated
insertion.
The
introduction
interlayer
structure
water
increased
spacing
"lubricant".
Ca2+
insertion
also
expanded
further
stabilized
vanadium-based
oxide.
density
functional
theory
results
showed
that
structured
could
effectively
improve
diffusion
kinetics,
resulting
in
rapid
zinc
ions.
As
result,
AZIBs
based
on
CaVO-2
offered
high
specific
capacity
(329.6
mAh
g–1
at
200
mA
g–1)
fast
charge/discharge
capability
(147
10
A
g–1).
Impressively,
quasi-solid-state
polyacrylamide–cellulose
nanofiber
hydrogel
electrolytes
maintained
an
outstanding
long
cycle
life
(162
over
000
cycles
5
This
study
provided
reliable
strategy
metal-ion
structural
oxides
to
produce
high-quality
ZIBs.
Meanwhile,
it
provides
ideas
combination
materials
gel
construct
solid-state
batteries.
Small Methods,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Feb. 29, 2024
Abstract
Aqueous
zinc
(Zn)
ions
battery
is
promising
for
future
large‐scale
applications
of
energy
storage
due
to
the
abundant
reserves,
high
capacity
metallic
Zn.
However,
dendritic
growth,
severe
side
reactions
have
limited
development
Zn‐metal
anodes.
A
single
skeleton
structure
or
interface
protection
difficult
simultaneously
mitigate
these
issues.
Here,
a
novel
composite
design
based
on
synergistic
interaction
between
hydrophobic
host,
zincophilic
reported.
On
one
hand,
3D
substrate
reduces
local
current
density,
inhibits
growth.
other
protective
homogenizes
nucleation
formation
ZnAu
3
alloy
layer.
More
importantly,
collaborative
construction
hydrophobicity,
zincophilicity
electrode
alleviates
aggravated
hydrogen
evolution
reaction
(only
2.5
mmol
h
−1
),
enables
low
overpotential
(31.7
mV)
during
cycling.
Consequently,
Coulombic
efficiency
≈98.25%
after
300
cycles
harvested
electrode.
The
pouch
cells
assembled
by
this
anode,
LiMn
2
O
4
cathode
maintain
82
mAh
g
retention
140
cycles.
This
research
shows
an
innovative
Zn‐based
structural
aqueous
Zn‐ion
batteries.
ACS Nano,
Journal Year:
2023,
Volume and Issue:
18(1), P. 839 - 848
Published: Dec. 18, 2023
Zn-ion
batteries
(ZIBs)
are
developing
rapidly
due
to
their
advantages
of
safety,
moderate
energy
density,
and
abundant
Zn-metal
reserves.
However,
the
dendritic
growth
side
reactions
at
Zn-based
anode
dissolution
metallic
elements
transition
metal-based
cathodes
destabilize
electrode/electrolyte
interface,
which
ultimately
reduces
electrochemical
performance
ZIBs.
Herein,
an
aqueous/organic
hybrid
electrolyte
that
endows
synergistic
cathode/anode
interfacial
layers
is
proposed.
On
anode,
ZnF2/Zn3(PO4)2-rich
film
induces
Zn
nucleation,
enabling
a
dendrite-free
corrosion-free
electrode
morphology.
cathode,
in
contrast
deposition
anomalously
on
cathode
surface
underpotential
during
cycling
unmodified
electrolyte,
obtained
using
inhibits
avoids
cathode.
As
result,
pouch
cell
with
LiMn2O4
(depth
discharge:
40%)
based
modified
maintains
capacity
92
mAh
g–1
after
235
cycles
stable
clean
interface.
This
research
presents
insight
into
construction
interface
for
long-cycling
