Metallic
zinc
exhibits
immense
potential
as
an
anode
material
for
aqueous
rechargeable
batteries
due
to
its
high
theoretical
capacity,
low
redox
potential,
and
inherent
safety.
However,
practical
applications
are
hindered
by
dendrite
formation
poor
cycling
stability.
Herein,
a
facile
substitution
reaction
method
is
presented
fabricate
3D
leaf-like
Cu@Zn
composite
anode.
This
unique
architecture,
featuring
network
of
Cu
on
Zn
foil
surface,
significantly
reduces
nucleation
overpotential
facilitates
uniform
plating/stripping,
effectively
suppressing
growth.
Notably,
alloy
layer
CuZn
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(15), С. 5563 - 5575
Опубликована: Янв. 1, 2024
The
comprehensive
regulation
of
an
in
situ
grown
overlayer
and
ionic
liquid
additive
enables
the
Zn
anode
to
harvest
homoepitaxial
deposition
along
certain
crystal
facets,
facilitating
commercial
application
aqueous
Zn-ion
batteries.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Сен. 20, 2024
Abstract
Aqueous
Zn
battery
is
promising
for
grid‐level
energy
storage
due
to
its
high
safety
and
low
cost,
but
dendrite
growth
side
reactions
at
the
metal
anode
hinder
development.
Designing
with
(002)
orientation
improves
stability
of
anode,
yet
grain
boundaries
remain
susceptible
corrosion
growth.
Addressing
these
intergranular
issues
crucial
enhancing
electrochemical
performance
(002)‐textured
Zn.
Here,
a
strategy
based
on
boundary
wetting
fill
regions
mitigate
reported.
By
systematically
investigating
fillers
filling
conditions,
In
chosen
as
filler,
one‐step
annealing
used
synergistically
convert
commercial
foils
into
single
while
boundaries.
The
inter‐crystalline‐modified
(IM(002)
Zn)
effectively
inhibits
growth,
resulting
in
excellent
batteries.
This
work
offers
new
insights
protection
development
high‐energy
Abstract
Aqueous
zinc
metal
batteries
have
attracted
much
attention
in
the
field
of
large‐scale
energy
storage
due
to
their
abundant
resources,
high
safety,
low
cost,
and
theoretical
density.
However,
Zn
anodes
suffer
from
serious
problems
such
as
dendrite
growth,
hydrogen
evolution
reaction,
corrosion,
passivation.
Cu‐based
materials
a
wide
range
applications
excellent
zincophilicity.
Unfortunately,
relevant
review
on
anode
electrode
is
still
lacking.
This
focuses
progress,
issues,
optimization
strategies
anodes.
The
application
Cu
collectors
corresponding
modifications
are
also
highlighted.
Finally,
insights
future
directions
related
for
modified
presented
provide
scientific
guidance
research.
Nature Communications,
Год журнала:
2024,
Номер
15(1)
Опубликована: Ноя. 1, 2024
Rechargeable
aqueous
zinc-metal
batteries,
considered
as
the
possible
post-lithium-ion
battery
technology
for
large-scale
energy
storage,
face
severe
challenges
such
dendrite
growth
and
hydrogen
evolution
side
reaction
(HER)
on
Zn
negative
electrode.
Herein,
a
three-dimensional
Cu-In
alloy
interface
is
developed
through
facile
potential
co-replacement
route
to
realize
uniform
nucleation
HER
anticatalytic
effect
simultaneously.
Both
theoretical
calculations
experimental
results
demonstrate
that
this
bifunctional
inherits
merits
of
low
Zn-nucleation
overpotential
high
from
individual
copper
indium
constituents,
respectively.
Moreover,
dynamical
self-reconstruction
during
cycling
leads
an
HER-anticatalytic
zincophilic
gradient
hierarchical
structure,
enabling
highly
reversible
chemistry
with
dendrite-free
(002)
deposition
inhibited
HER.
improved
stability
featured
by
negligible
pH
fluctuations
in
diffusion
layer
suppressed
by-product
formation
evidenced
in-situ
scanning
probe
technology,
Raman
spectroscopy,
electrochemical
gas
chromatography.
Consequently,
lifespan
CuIn@Zn
symmetric
cell
extended
more
than
one
year
voltage
hysteresis
6
mV.
Importantly,
electrode
also
successfully
coupled
high-loading
iodine
positive
fabricate
Ah-level
(1.1
Ah)
laminated
pouch
cell,
which
exhibits
capacity
retention
67.9%
after
1700
cycles.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 7, 2024
Abstract
The
practical
applications
of
zinc
metal
anode
are
restricted
by
detrimental
dendrite
growth
and
hydrogen
evolution
reaction
(HER),
especially
at
high
current
densities.
Previous
works
have
demonstrated
that
constructing
Zn(002)
texture
could
effectively
suppress
HER.
However,
the
surface
grain
distribution
commercial
remains
indistinct.
Herein,
a
simple
mechanical
grinding
approach
is
to
construct
(002)‐textured
anodes.
After
grinding,
(002)
relative
coefficient
increases
from
10.58
42.28,
indicating
significant
more
planes
exposure.
As
prepared
exhibits
critical
density
141
mA
cm
−2
stably
cycles
for
over
1500
50
1
mAh
.
Benefiting
stability
fast
kinetics
this
anode,
zinc‐ion
capacitor
achieves
power
8500
W
kg
−1
long
cycle
10
000
with
Coulombic
efficiency
(CE)
exceeding
99.9%.
This
work
provides
both
fundamental
insights
dendrite‐free
HER‐suppressed
anodes
inspiring
guidance
other
batteries.
