Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 26, 2025
Abstract
Aqueous
Zn‐ion
batteries
(AZIBs)
are
considered
a
promising
candidate
for
large‐scale
energy
storage
application
owing
to
their
high
capacity,
good
safety,
low
cost,
and
environmental
friendliness.
However,
the
presence
of
active
water
leads
issues
such
as
corrosion,
dendrite
growth
hydrogen
evolution
reaction
on
Zn
metal
anodes,
severely
limiting
cycle
lifetime
reversibility
AZIBs.
To
address
these
challenges,
this
study
introduces
simple
drop‐casting
method
deposit
composite
protective
coating
2D
titanium
carbide
(Ti
3
C
2
T
x
)
MXene
polyethyleneimine
(PEI)
surface
foil,
i.e.,
MXene/PEI@Zn.
The
MXene/PEI
contains
polar
groups
−OH
that
can
regulate
deposition.
Additionally,
prevent
from
directly
contacting
surface.
results
show
MXene/PEI@Zn
anodes
over
2600
1100
h
at
corresponding
current
density
1
5
mA
cm
−2
(Areal
capacity:
mAh
).
When
paired
with
V
O
·1.6H
cathode,
it
contributes
evidently
improved
full‐cell
performance
85%
capacity
retention
after
4800
cycles
A
g
−1
.
This
work
provides
new
insights
into
practical
design
highly
reversible
anodes.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 9, 2025
Abstract
Achieving
highly
ordered
and
compact
assembly
of
zinc
(Zn)
deposits,
side‐reaction‐free,
no
by‐product
deposition
manner
Zn
anodes
is
crucial
to
avoid
the
premature
failure
for
Zn‐ion
batteries,
which
jointly
determined
by
state
polycrystalline
substrates,
interfacial
microenvironment,
epitaxial
growth,
crystal
orientation,
their
interaction.
Herein,
progressive
electrochemical
behavior
anodes,
regulated
converted
species
l
‐theanine
(THE)
molecules
from
hydrogel
matrix,
uncovered.
THE
are
capable
accommodating
electrolyte
environment
provide
a
weakly
acidic
condition
at
infancy
stage
electrodeposition,
induces
an
in
situ
acid
etching
process
releasing
residual
stress
substrates.
This
achieves
lattice
match
between
substrate
overgrowth
crystals,
renders
crystals
seamlessly
amalgamate
with
form
oriented
densely
packed
deposit
via
homoepitaxial
growth
combined
+
cations.
Concomitantly,
adsorbed
cations
facilitate
formation
inorganic–organic
hybrid
solid
interphase
layer.
Consequently,
Zn||Zn
cell
THE‐filled
significantly
long
cycling
stability
2000
cycles,
ultrahigh
average
Coulombic
efficiency
99.0%
over
1000
cycles.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 28, 2025
Zn
metal
anodes
in
mildly
acidic
electrolytes
usually
suffer
from
a
series
of
problems,
including
parasitic
dendrite
growth
and
severe
side
reactions,
significantly
limiting
the
utilization
efficiency
cycling
life.
A
deep
understanding
stripping/plating
process
is
essential
to
obtain
high-efficiency
long-life
anodes.
Here,
factors
affecting
are
revealed,
suggesting
that
thermodynamic
uniformity
bulk
structures
promotes
an
orderly
stripping
process,
fast
kinetic
diffusion
rate
on
surface
facilitates
uniform
deposition.
Then,
co-optimized
strategy
for
stabilizing
proposed,
which
confirmed
effectively
suppress
reactions.
Thus,
modified
display
record-breaking
lives
1200
200
h
under
ultrahigh
efficiencies
80
93.5%,
respectively.
More
importantly,
using
this
anode
enables
us
realize
Ah-level
pouch
cells
continuous
cycles
harsh
conditions.
Advanced Energy Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 10, 2025
Abstract
The
electrode/electrolyte
interfacial
side
reaction
is
a
critical
issue
for
aqueous
zinc
ion
batteries
(ZIBs).
In
this
study,
it
presents
an
innovative
electrolyte
designed
to
utilize
steric
hindrance
effects
modulate
Zn
deposition
behavior
while
mitigating
undesirable
hydrogen
evolution
reactions.
incorporation
of
sugar
alcohols
into
the
facilitates
reconfiguration
bonding
network,
alters
solvation
structure
2
⁺
ions,
and
promotes
rapid
desolvation
process,
resulting
in
enhanced
transport
kinetics.
Additionally,
xylitol
molecules
preferentially
adsorb
onto
(100)
crystalline
surface,
inducing
structural
changes
promote
(101)
growth.
Consequently,
configuration
enables
anode
achieve
impressive
operational
lifespan
2100
h
exceptional
Coulombic
efficiency
99.8%.
Furthermore,
when
paired
with
ZnHCF
as
anode,
full
cell
operates
at
high
voltage
1.75
V,
illustrating
promising
pathway
practical
application
ZIBs.
Nanoscale,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 1, 2025
The
intercalation/deintercalation
mechanism
of
copper
ions
in
iron
hexacyanoferrate
(FeHCF)
was
explored,
and
an
aqueous
battery
with
a
voltage
range
1.6–2.5
V
prepared.
These
findings
highlight
the
potential
FeHCF-based
batteries.
ACS Nano,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 8, 2025
The
longevity
of
aqueous
batteries
after
scaling
up
is
largely
restricted
by
metal
anodes
(Zn,
Al,
and
Mg).
Parasitic
reactions
uncontrolled
dendrites
dominate
failure
modes,
especially
at
high
current
densities.
To
fully
improve
its
reversibility,
tailored
surface
chemistry
well-designed
ion
transport
channels
are
simultaneously
demanded.
Here,
inspired
the
reticulated
structure
sea
urchin
shell,
an
aligned
porous
coating
assembled
from
graphene
oxide
sodium
alginate
anchored
on
zinc
anodes,
termed
a
unidirectional
sieve.
As
revealed
multiscale
modeling
tests,
this
biomimetic
layer
produces
area,
creating
low-tortuosity
that
greatly
enhance
kinetics
uniform
distribution
ions.
introduction
ion-conductive
natural
polymer
enables
well-tuned
hydration
selectivity,
alleviating
side
reactions.
With
structural-functional
integrity
design,
decorated
symmetrical
cell
presents
reversible
cycling
for
1600
h,
with
reduced
nucleation
potential
21
mV
Coulombic
efficiency.
Aided
Distribution
Relaxation
Time
tool,
different
electrochemical
processes
deconvoluted
to
understand
respective
mechanisms,
thereby
providing
referable
strategy
product
scaling.
In
end,
7Ah
Zn||VO2
pouch
demonstrates
stable
over
500
cycles
1
A·g-1,
capacity
retention
90%.
