Chemical Science,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Aqueous
zinc-ion
batteries
(ZIBs)
are
emerging
as
promising
next-generation
energy
storage
systems
due
to
their
inherent
safety,
environmental
sustainability,
and
cost-effectiveness.
However,
widespread
application
is
hindered
by
challenges
such
dendritic
Zn
growth,
hydrogen
evolution,
corrosion-induced
passivation,
which
compromise
performance
scalability.
To
overcome
these
obstacles,
we
developed
a
novel
dual-interface
modified
zinc
anode
integrating
fluoride
(ZnF2)-silicon
(Si)
interface
using
fluorine-doped
silicon
nanoparticles
encapsulated
within
hollow
mesoporous
carbon
nanospheres
(F-Si@HMCS).
The
in
situ
formation
of
ZnF2
layer
provides
high
electrochemical
stability,
effectively
suppressing
dendrite
formation,
mitigating
corrosion,
reducing
side
reactions
with
the
electrolyte.
silica
further
facilitates
uniform
electrodeposition
forming
Si-O-Zn
bonds,
regulate
electric
field
distribution
lower
nucleation
barriers.
Additionally,
structure
efficient
ion
transport
acts
buffer
against
volume
changes
during
cycling.
Consequently,
F-Si@HMCS@Zn
electrode
exhibits
long
lifespan
over
2500
h
at
5
mA
cm-2
capacity
0.5
symmetrical
cell
test.
When
coupled
α-MnO2
cathodes,
resulting
ZIBs
exhibit
outstanding
stable
cycle
life
2000
cycles
2
A
g-1.
Abstract
Commercial
3D
zinc
foam
anodes
with
high
deposition
space
and
ion
permeation
have
shown
great
potential
in
aqueous
batteries.
However,
the
local
accumulated
stress
from
its
high‐curvature
surface
exacerbates
Zn
dendrite
issue,
leading
to
poor
reversibility.
Herein,
we
employed
zincophilic
N‐doped
carbon
@
Sn
composites
(N‐C@Sn)
as
nano‐fillings
effectively
release
of
curvature
foams
toward
dendrite‐free
anode
battery
(AZIB).
These
electronegative
conductive
N‐C@Sn
supporters
can
provide
a
highly
channel
for
initial
nucleation
reduce
current
density
regulating
deposition.
Uniform
further
assists
homogenous
distribution
on
platting
surface,
which
gives
positive
feedback
loop
improve
As
result,
composite
(ZCSn
Foam)
symmetric
cell
achieves
long
cycle
lifespan
1100h
at
0.5
mA
cm
−2
,
much
more
than
that
Foam
(∼80
h
lifespan).
The
full
ZCSn
Foam||MnO
2
exhibits
remarkable
reversibility
67%
retention
after
1000
cycles
0.8
A
g
−1
76%
1600
Ag
.
This
3D‐constructing
strategy
may
offer
promising
practical
pathway
metal
application.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 20, 2024
Abstract
Zinc
metal
is
a
high‐capacity
and
cost‐effective
anode
material
for
aqueous
zinc‐ion
batteries,
but
its
development
impeded
by
dendrite
growth
interfacial
side
reactions.
In
this
study,
unique
dipole
molecule
(DPM)
layer
constructed
on
zinc
surface
via
an
in
situ
etching‐growth
strategy
to
regulate
the
electric
field
ion
distribution.
Theoretical
calculations
experiments
confirm
that
asymmetrical
charge
distribution
within
DPM
can
significantly
remodel
of
Zn
surface.
The
zincophilic
accelerates
migration
ions
through
ordered
channels.
Electro‐ionic
regulation
achieves
dendrite‐free
deposition
reduces
formation
byproducts.
DPM‐Zn
symmetrical
cells
exhibit
ultralow
voltage
hysteresis
(≈
24.2
mV),
highly
reversible
plating/stripping
behavior,
stable
cycling
over
1700
h
at
1
mA
cm
−2
.
DPM‐Zn||MnO
2
full
exhibited
higher
specific
capacity
cycle
stability
than
bare
anode.
This
work
verifies
feasibility
electro‐ionic‐field
synergistic
robust
anodes
provides
new
insights
into
interface
design
anodes.
Angewandte Chemie,
Год журнала:
2024,
Номер
136(39)
Опубликована: Июнь 28, 2024
Abstract
The
solar‐driven
photorechargeable
zinc‐ion
batteries
have
emerged
as
a
promising
power
solution
for
smart
electronic
devices
and
equipment.
However,
the
subpar
cyclic
stability
of
Zn
anode
remains
significant
impediment
to
their
practical
application.
Herein,
poly(diethynylbenzene‐1,3,5‐triimine‐2,4,6‐trione)
(PDPTT)
was
designed
functional
polymer
coating
Zn.
Theoretical
calculations
demonstrate
that
PDPTT
not
only
significantly
homogenizes
electric
field
distribution
on
surface,
but
also
promotes
ion‐accessible
surface
With
multiple
N
C=O
groups
exhibiting
strong
adsorption
energies,
this
reduces
nucleation
overpotential
Zn,
alters
diffusion
pathway
2+
at
interface,
decreases
corrosion
current
hydrogen
evolution
current.
Leveraging
these
advantages,
Zn‐PDPTT//Zn‐PDPTT
exhibits
an
exceptionally
long
cycling
time
(≥4300
h,
1
mA
cm
−2
).
Zn‐PDPTT//AC
hybrid
capacitors
can
withstand
50,000
cycles
5
A/g.
Zn‐PDPTT//NVO
battery
faster
charge
storage
rate,
higher
capacity,
excellent
stability.
Coupling
with
high‐performance
perovskite
solar
cells
results
in
13.12
%
overall
conversion
efficiency
battery,
showcasing
value
advancing
upgrading
renewable
energy
utilization.
High-performance
zinc-ion
batteries
(ZIBs)
have
attracted
a
great
deal
of
attention
due
to
their
high
theoretical
capacity
and
level
safety.
Herein,
we
propose
covalent
organic
framework
(COF)
hybrid
poly(vinyl
alcohol)
(PVA)-based
gel
electrolyte,
which
can
induce
the
uniform
deposition
Zn2+
achieve
dendrite-free
formation.
By
grafting
sulfonic
acid
groups
on
surface
COFs
absorb
Zn2+,
strengthen
interaction
between
strong
ions
dipoles
in
improve
ionic
conductivity,
stable
electroplating
stripping.
Due
good
thermal
stability
COF
material
itself,
electrolyte
with
PVA
hydrogel
shows
mechanical
strength
heat
resistance
is
capable
cycling
for
>1000
h
at
50
°C,
retention
rate
≤75%.
This
study
provides
new
approach
developing
high-temperature-resistant
highly
ZIBs.
