Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 7, 2025
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
offer
significant
potential
for
grid‐scale
energy
storage
due
to
their
cost‐effectiveness,
safety,
and
eco‐friendliness.
However,
interfacial
instability
parasitic
reactions
under
extreme
temperatures
(−20
60
°C)
severely
degrade
cyclability.
To
address
these
limitations,
a
ternary
copolymer
gel
electrolyte
(PAM‐T‐S)
is
developed
through
copolymerization
of
acrylamide
(AM)
with
[2‐(methacryloyloxy)ethyl]dimethyl(3‐sulfopropyl)ammonium
betaine
(SPE)
thymine
(Thy),
forming
multidimensional
crosslinked
network.
Thy
immobilizes
free
water
molecules
suppress
activity,
while
SPE
establishes
rapid
Zn
2+
transport
pathways,
boosting
ionic
conductivity.
Synergistically,
reconstruct
the
solvation
sheath
induce
hybrid
organic–inorganic
solid
interphase
(SEI)
via
preferential
adsorption
decomposition,
effectively
inhibiting
dendrite
growth
side
reactions.
Consequently,
Zn||Zn
symmetric
cells
PAM‐T‐S
achieve
long
lifespans
3200
h
at
1
mA
cm
−2
/1
mAh
1000
20
,
along
exceptional
wide‐temperature
performance
(3000
−20
°C
820
°C,
).
The
Zn||VO
2
full
cell
retains
87.8%
capacity
after
2000
cycles
5C,
highlighting
its
high‐rate
durability.
This
multifunctional
hydrogel
design
advances
AZIBs
toward
reliable
operation
across
broad
temperature
ranges,
providing
scalable
strategy
next‐generation
systems.
Aqueous
batteries,
renowned
for
their
high
capacity,
safety,
and
low
cost,
have
emerged
as
promising
candidates
next-generation,
sustainable
energy
storage.
However,
large-scale
application
is
hindered
by
challenges,
such
dendrite
formation
side
reactions
at
the
anode.
Hydrogel
electrolytes,
which
integrate
advantages
of
liquid
solid
phases,
exhibit
superior
ionic
conductivity
interfacial
compatibility,
giving
them
potential
to
suppress
evolution.
This
Perspective
first
briefly
introduces
fundamentals
underlying
unique
features
hydrogels.
It
then
identifies
key
role
water
polymer
networks
in
inhibiting
formation,
highlighting
regulation
activity,
ion
transport,
electrode
kinetics.
By
elucidating
principles
hydrogels
suppression,
this
work
aims
provide
valuable
insights
advance
implementation
aqueous
batteries
incorporating
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 14, 2025
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
based
on
hydrogel
electrolytes
are
considered
promising
flexible
power
supplies
owing
to
their
intrinsic
safety,
competent
volumetric
energy
density,
and
eco‐friendliness.
However,
severe
mechanical
deterioration
of
the
caused
by
insufficient
inter‐component
contact,
zinc
(Zn)
dendrites,
freezing
prevents
commercialization.
Herein,
it
is
found
that,
doping
a
trace
Fe
3+
ions
afford
‐carboxylate
supramolecular
interaction,
practicality
an
archetypal
cellulose
nanofiber‐reinforced
electrolyte
significantly
improved
in
couple
aspects,
including
three
eight
times
increase
tensile
strength
toughness
without
loss
ion
conducting
ability
(up
32
mS
cm
−1
)
being
room‐temperature
self‐healable
strongly
adhesive
various
battery
components.
Together
with
use
anti‐freezing
mixed
Zn
salt,
resulting
able
deliver
ultrahigh
cycling
reversibility
(averaging
99.4%),
great
cyclability
AZIBs
(a
high
specific
capacity
180
mAh
g
retention
81%),
render
operable
under
abuse
conditions
180°
folding,
exposure
liquid
nitrogen,
cutting–rehealing
cycles.
This
work
unlocks
enormous
potential
chemistry
development
self‐healable,
anti‐freezing,
extreme‐environment‐adaptable
gel
for
storage
devices.
Hydrogen
evolution
reaction
(HER)
on
Zn-metal
constrains
the
development
of
aqueous
zinc
batteries.
Ionic
liquid
(IL)
additives
are
proposed
to
isolate
interfacial
H2O
and
suppress
HER.
However,
whether
addition
either
hydrophilic
or
hydrophobic
ILs
can
effectively
HER
seems
"contradictory".
Herein,
although
disproportionation
hydrophilic/hydrophobic
properties
leads
an
content
difference,
we
demonstrate
that
both
present
a
consistent
influence
configuration
hydrogen
bonds.
Specifically,
they
decrease
amount
weak
bonds
increase
number
strong
simultaneously,
which
makes
deprotonation
(related
HER)
more
difficult.
In
addition,
by
capturing
dynamic
through
in
situ
spectroscopy,
successfully
correlate
with
detrimental
parasitic
surface.
This
study
enhances
understanding
interface
engineering
from
perspective
bond
evolution.
Abstract
Considering
the
merits
and
shortcomings
of
conventional
hydrogels
in
terms
low‐temperature
adaptability,
a
new
type
hydrogel
electrolyte,
reinforced
by
hydrogen
bonding
containing
just
6.8%
water,
is
fabricated.
This
film
exhibits
high
ionic
conductivity
3.9
mS
cm
−1
at
room
temperature
maintains
its
flexibility
even
−40
°C.
The
hydrogel‐based
quasi‐solid‐state
cell
shows
good
cyclic
stability
performance,
retaining
80.3%
initial
capacity
after
800
cycles.
Furthermore,
it
performs
well
sub‐zero
conditions,
89.6%
−30
°C
(0.5C)
releasing
56.4
mAh
g
(0.1C).
Notably,
LTE‐based
flexible
full
under
180°
bending
15%
stretching.
can
be
attributed
to
polymer
network
with
hydrophilic
groups,
which
disrupts
hydrogen‐bond
networks
original
water
molecules
forms
abundant
interactions
between
chains
molecules.
These
are
crucial
for
improving
adaptability.
Overall,
this
work
offers
promising
approach
creating
adaptable
that
used
develop
wearable
energy‐storage
devices.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 1, 2024
Abstract
Rechargeable
aqueous
zinc
batteries
(AZBs)
utilizing
water‐borne
electrolytes
are
intrinsically
safe
electrochemical
devices
that
promising
in
next‐generation
energy
storage.
Such
application
requires
adaptivity
to
global
climate,
especially
at
grid‐scale,
thus
their
stability
of
performance
varying
temperatures
is
critical.
Many
essential
properties
AZBs,
i.e.,
ion
transfer,
redox
kinetics,
etc.,
largely
governed
by
the
because
relatively
limited
stable
phase
temperature
water.
This
limitation
extremely
vital
cold
regions
since
charging
and
discharging
become
more
difficult
sub‐zero
range
due
water
freezing.
Despite
development
various
electrolyte
strategies
recent
years,
comprehensive
reviews
focusing
on
this
topic
remain
limited.
research
diverse
reasons
underneath
failure
AZBs
extreme
provides
a
thorough
analysis
possible
resolutions
from
an
perspective.
It
starts
with
challenges
faced
both
high
low
concerning
electrolytes.
Different
addressing
these
discussed,
providing
insights
into
under
conditions.
Finally,
review
concludes
summary
outlook
design
structure
for
all‐weather
integrating
innovative
non‐aqueous
battery
systems.
