Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 26, 2024
Abstract
The
performance
of
aqueous
zinc‐ion
batteries
(AZIBs)
at
high
temperatures
(HT)
is
severely
compromised
by
active
water
corrosion,
parasitic
reactions,
and
dendrite
growth.
Herein,
zinc
trifluoroacetate
introduced
a
low
concentration
(0.2
m
),
dissolved
in
triethyl
phosphate
(TEP)and
H
2
O.
suppressed
due
to
the
reconstructed
original
hydrogen
bond
network,
which
helps
inhibit
reactions
severe
corrosion.
Meanwhile,
solid
electrolyte
interphase
(SEI)
formed
on
anode
decomposition
salt.
high‐tolerance
SEI
physically
separates
anode,
reducing
corrosion
caused
water.
Moreover,
TEP,
as
prevalent
fire‐retardant
cosolvent,
can
preferentially
anchor
sheet,
serving
shielding
buffer
layer.
TEP
not
only
reconstructing
structure
electric
double
layer
(EDL),
decreasing
content
water,
but
also
accelerating
prompt
formation
further.
As
proof
this
synergistic
effect,
assembled
symmetric
Zn.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 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 Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 26, 2024
Abstract
The
performance
of
aqueous
zinc‐ion
batteries
(AZIBs)
at
high
temperatures
(HT)
is
severely
compromised
by
active
water
corrosion,
parasitic
reactions,
and
dendrite
growth.
Herein,
zinc
trifluoroacetate
introduced
a
low
concentration
(0.2
m
),
dissolved
in
triethyl
phosphate
(TEP)and
H
2
O.
suppressed
due
to
the
reconstructed
original
hydrogen
bond
network,
which
helps
inhibit
reactions
severe
corrosion.
Meanwhile,
solid
electrolyte
interphase
(SEI)
formed
on
anode
decomposition
salt.
high‐tolerance
SEI
physically
separates
anode,
reducing
corrosion
caused
water.
Moreover,
TEP,
as
prevalent
fire‐retardant
cosolvent,
can
preferentially
anchor
sheet,
serving
shielding
buffer
layer.
TEP
not
only
reconstructing
structure
electric
double
layer
(EDL),
decreasing
content
water,
but
also
accelerating
prompt
formation
further.
As
proof
this
synergistic
effect,
assembled
symmetric
Zn.
