Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
attract
attention
due
to
their
safety
and
high
specific
capacity.
However,
practical
applications
are
constrained
by
Zn
anode
corrosion,
dendritic
growth,
poor
high‐temperature
adaptability
induced
a
strong
hydrogen‐bond
network
in
aqueous
electrolytes.
In
this
work,
dual
polyanionic
gel
electrolyte
(denoted
as
PAM‐PAMPS‐10PD)
is
developed
capable
of
withstanding
temperatures
(100
°C)
situ
polymerization.
The
abundant
anionic
groups
the
greatly
improve
2+
transport
inducing
uniform
deposition
.
Then
addition
high‐boiling
molecular
crowding
agent
1,5‐pentanediol
(PD)
can
inhibit
water
activity
enhancing
hydrogen
bonding
with
H
2
O
changing
solvation
structure
corrosion.
As
result,
symmetric
battery
using
PAM‐PAMPS‐10PD
be
stably
cycled
for
at
least
500
h
100
°C
0.5
mA
cm
−2
/0.5
mAh
,
realizing
dendrite‐free
zinc
anodes
temperatures.
Moreover,
Zn–AC
full
has
capacity
retention
47.8%
after
3000
cycles
4
This
study
provides
beneficial
reference
design
high‐performance
electrolytes
establishes
solid
foundation
application
AZIBs.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 9, 2024
Abstract
Dendrite
growth
and
parasitic
side
reactions
on
zinc
(Zn)
metal
anode
are
major
challenges
limiting
the
practical
application
of
aqueous
ion
batteries
(AZIBs),
particularly
under
wide
temperatures
conditions.
This
study
proposes
a
novel
hydrated
deep
eutectic
solvent
based
electrolyte
by
using
ethylene
glycol
(EG)
SnI
4
,
enabling
AZIBs
to
achieve
excellent
cycling
life
from
−30
60
°C.
Spectroscopic
characterizations
reveal
H
2
O
molecules
effectively
confined
within
network
due
dual
effects
Zn
2+
coordination
EG
hydrogen
bonding,
thereby
weakening
free
water
activity
broadening
electrochemical
window.
Furthermore,
resulting
dissociation‐reduction
an
organic‐inorganic
hybridized
solid
interphase
(SEI)
layer
is
formed
surface
with
zincophile
gradient,
this
gradient
SEI
inhibits
evolution
regulates
oriented
deposition.
The
Zn//Zn
symmetric
cell
utilizing
achieves
remarkable
stability
over
7800
h
at
room
temperature,
6000
°C,
2500
work
provides
insights
into
new
approach
formation
mechanism
anode,
which
demonstrates
significant
potential
for
developing
high
Chemical Communications,
Год журнала:
2024,
Номер
60(58), С. 7467 - 7470
Опубликована: Янв. 1, 2024
A
finely
controlled
concentration
polarization
environment
was
deliberately
created
to
fabricate
a
three-dimensional
ordered
Zn
metal
anode
with
(002)-dominated
planes,
which
enabled
high-rate
aqueous
Ni-Zn
pouch
cell
high
discharge
capacity
of
187.3
mA
h
g
The
low
plating/stripping
efficiency
of
zinc
anodes,
dendrite
growth,
and
high
freezing
points
aqueous
solutions
hinder
the
practical
application
zinc-ion
batteries.
This
paper
proposes
a
zwitterionic
permeable
network
solid-state
electrolyte
based
on
"anchor-capture"
effect
to
address
these
problems
by
incorporating
proline
(Pro,
biological
antifreeze
agent)
into
electrolyte.
Extensive
validation
tests,
Quantum
Chemistry
(QC)
calculations,
Molecular
Dynamics
(MD)
Simulations,
ab
initio
molecular
dynamics
simulations
consistently
indicate
that
amino
groups
in
adsorb
onto
Zn
metal
surface,
stabilizing
anode-electrolyte
interface,
suppressing
side
reactions
from
water
decomposition,
homogenizing
flux.
demonstrates
excellent
reversibility
Zn-Mn
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 27, 2024
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
attract
attention
due
to
their
safety
and
high
specific
capacity.
However,
practical
applications
are
constrained
by
Zn
anode
corrosion,
dendritic
growth,
poor
high‐temperature
adaptability
induced
a
strong
hydrogen‐bond
network
in
aqueous
electrolytes.
In
this
work,
dual
polyanionic
gel
electrolyte
(denoted
as
PAM‐PAMPS‐10PD)
is
developed
capable
of
withstanding
temperatures
(100
°C)
situ
polymerization.
The
abundant
anionic
groups
the
greatly
improve
2+
transport
inducing
uniform
deposition
.
Then
addition
high‐boiling
molecular
crowding
agent
1,5‐pentanediol
(PD)
can
inhibit
water
activity
enhancing
hydrogen
bonding
with
H
2
O
changing
solvation
structure
corrosion.
As
result,
symmetric
battery
using
PAM‐PAMPS‐10PD
be
stably
cycled
for
at
least
500
h
100
°C
0.5
mA
cm
−2
/0.5
mAh
,
realizing
dendrite‐free
zinc
anodes
temperatures.
Moreover,
Zn–AC
full
has
capacity
retention
47.8%
after
3000
cycles
4
This
study
provides
beneficial
reference
design
high‐performance
electrolytes
establishes
solid
foundation
application
AZIBs.
