Sensors,
Journal Year:
2024,
Volume and Issue:
24(19), P. 6197 - 6197
Published: Sept. 25, 2024
Ion−conducting
hydrogels
show
significant
potential
in
plant
growth
monitoring.
Nevertheless,
traditional
ionic
hydrogel
sensors
experience
substantial
internal
creep
and
inadequate
sensitivity,
hindering
precise
In
this
study,
we
developed
a
flexible
sensor
composed
of
polyvinyl
alcohol
acrylamide.
The
exhibits
low
high
sensitivity.
Polyvinyl
alcohol,
acrylamide,
glycerol
are
crosslinked
to
create
robust
interpenetrating
double
network
structure.
strong
interactions,
such
as
van
der
Waals
forces,
between
the
networks
minimize
under
external
stress,
reducing
drift
ratio
by
50%
rate
more
than
60%.
Additionally,
sodium
chloride
AgNWs
enrich
with
conductive
ions
pathways,
enhancing
sensor’s
conductivity
demonstrating
excellent
response
time
(0.4
s)
recovery
(0.3
s).
When
used
for
monitoring,
sensitivity
small
strains
stability
long−term
This
establishes
foundation
developing
health
monitoring
systems
utilizing
renewable
biomass
materials.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 10, 2024
Aqueous
zinc
batteries
(AZBs)
hold
great
potential
for
green
grid-scale
energy
storage
due
to
their
affordability,
resource
abundance,
safety,
and
environmental
friendliness.
However,
practical
deployment
is
hindered
by
challenges
related
the
electrode,
electrolyte,
interface.
Functional
hydrogels
offer
a
promising
solution
address
such
owing
broad
electrochemical
window,
tunable
structures,
pressure-responsive
mechanical
properties.
In
this
review,
key
properties
that
functional
must
possess
advancing
AZBs,
including
strength,
ionic
conductivity,
swelling
behavior,
degradability,
from
perspective
of
full
life
cycle
in
AZBs
are
summarized.
Current
modification
strategies
aimed
at
enhancing
these
improving
AZB
performance
also
explored.
The
design
considerations
integrating
with
electrodes
interface
discussed.
end,
limitations
future
directions
bridge
gap
between
academia
industries
successful
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
Zinc
(Zn)
metal,
with
abundant
resources,
intrinsic
safety,
and
environmental
benignity,
presents
an
attractive
prospect
as
a
novel
electrode
material.
However,
many
substantial
challenges
remain
in
realizing
the
widespread
application
of
aqueous
Zn-ion
batteries
(AZIBs)
technologies.
These
encompass
significant
material
corrosion
(This
can
lead
to
battery
failure
unloaded
state.),
hydrogen
evolution
reactions,
pronounced
dendrite
growth
at
anode
interface,
constrained
electrochemical
stability
window.
Consequently,
these
factors
contribute
diminished
lifespan
energy
efficiency
while
restricting
high-voltage
performance.
Although
numerous
reviews
have
addressed
potential
separator
design
mitigate
issues
some
extent,
inherent
reactivity
water
remains
fundamental
source
challenges,
underscoring
necessity
for
precise
regulation
active
molecules
within
electrolyte.
In
this
review,
mechanism
AZIBs
(unloaded
charge
discharge
state)
is
analyzed,
optimization
strategy
working
principle
electrolyte
are
reviewed,
aiming
provide
insights
effectively
controlling
process
reaction,
further
formation,
expanding
range
stability.
Furthermore,
it
outlines
promote
its
practical
future
development
pathways.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 3, 2025
Abstract
Environmental‐friendly
aqueous
Zn−CO
2
batteries
present
bifunctional
potentials
of
achieving
carbon
neutrality
and
energy
storage.
Nonetheless,
anode
corrosions
derived
from
H
O
molecules
high
risks
volatilization
leakage
hinder
the
advancement
batteries.
In
this
work,
polyvinyl
alcohol
(PVA)‐based
hydrogel
electrolyte
with
fast
ion
diffusion
kinetics,
mechanical
strength,
flexibility
is
developed
to
replace
liquid
electrolyte.
Since
hydroxyl
radicals
in
polymer
chain
can
interact
Zn
2+
,
electrode
corrosion
free
active
around
significantly
inhibited,
facilitating
uniform
deposition
cations.
The
introduction
an
ionic
plasticizer
further
enhances
interaction
between
backbone,
as
well
amorphous
extent
possesses
adequate
self‐healing
ability,
whose
conductivity
reaches
7.95
×
10
−3
S
cm
−1
.
symmetric
metal
containing
remain
steady
for
>2000
h
under
different
current
densities.
Furthermore,
battery
based
on
Ru
nanoparticles
cathode
realizes
a
discharge
capacity
6028
mAh
g
stable
cyclicity
90
times.
reaction
path
electrolyte‐based
that
CO
reduced
ZnCO
3
C
species
followed
by
reversible
decomposition
products
recharge.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 25, 2025
Flexible
ZIBs
are
gaining
significant
attention
as
a
cost-effective
and
inherently
safe
energy
storage
technology
with
promising
applications
in
next-generation
flexible
wearable
devices.
The
rising
demand
for
electronics
has
spurred
the
advancement
of
batteries.
However,
widespread
adoption
liquid
electrolytes
zinc-ion
batteries
been
hindered
by
persistent
challenges,
including
leakage,
water
evaporation,
parasitic
water-splitting
reactions,
which
pose
obstacles
to
commercialization.
Free-standing
substrates
solid-state
polymer
key
enhancing
density,
ionic
conductivity,
power
mechanical
strength,
flexibility
ZIBs.
Herein,
this
review
highlights
recent
progress
strategies
developing
high-efficiency
systems,
focusing
on
advancements
(transitioning
from
rigid
flexible),
(shifting
solid),
adaptability
(from
non-portable
portable
designs),
transition
laboratory
research
practical
industrial
applications.
Critical
assessments
advanced
modification
approaches
presented,
emphasizing
their
role
achieving
safe,
flexible,
stretchable,
wearable,
self-healing
Finally,
future
directions
development
designing
effective
discussed.
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: April 28, 2025
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 Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 13, 2025
Abstract
Conventional
electrolytes
in
aqueous
zinc‐iodine
batteries
struggle
to
suppress
the
shuttle
effect
and
enhance
interfacial
stability,
resulting
high
self‐discharge
rate,
low
areal
capacity,
short
cycle
life.
To
address
these
issues,
a
dual‐confinement
hydrogel
electrolyte
(DCHE)
is
designed
simultaneously
stabilize
iodine
cathode
zinc
anode
at
capacities
via
functionally
segregated
ion
regulation
strategy.
As
for
cathode,
anion‐functional
groups
DCHE
repel
polyiodides,
while
cation‐functional
adsorb
those
that
escape
repulsion,
thereby
reinforcing
suppression
of
polyiodide
migration
toward
anode.
This
dual
confinement
effect,
validated
by
theoretical
simulations
situ
characterization,
effectively
mitigates
effect.
Additionally,
hydrophilic
zincophilic
functional
regulate
hydrogen‐bond
network
Zn
2+
flux,
strengthening
electrochemical
stability
result,
Zn//ZnI
2
cell
assembled
with
delivers
practical
capacity
4.5
mAh
cm
−2
achieves
record‐long
lifespan
exceeding
6000
h
88.9%
retention
100
mA
g
−1
.
Furthermore,
single‐layer
pouch
exhibits
good
mechanical
retaining
80%
its
after
cycles
90°
bending.
work
highlights
importance
advancing
high‐performance
batteries.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: March 23, 2025
Abstract
Aqueous
zinc‐ion
batteries
(AZIBs)
are
emerging
as
sustainable
energy
storage
systems,
yet
their
practical
application
is
challenged
by
issues
such
dendrite
growth
and
hydrogen
evolution.
A
critical
factor
in
enhancing
the
performance
of
AZIBs
development
hydrogel
electrolytes
(HEs)
which
offer
reduced
free
water,
thereby
mitigating
side
reactions
preventing
leakage.
However,
achieving
a
balance
between
water
maintaining
high
ionic
conductivity
challenging.
Herein,
sulfonate‐modified
covalent
organic
framework
(COF‐BSO
3
Zn)
designed
via
facile
method
intergated
it
into
polyacrylamide
(PAM)
to
form
PAM/COF‐BSO
Zn
(PAM/CBZn)
HEs.
The
COF‐BSO
exhibits
enhanced
aqueous
dispersibility
significantly
improved
adsorption
capacity
for
2+
.
PAM/CBZn
electrolyte
possesses
ultrahigh
(64.43
mS
cm
−1
)
excellent
transference
number
(0.84)
due
ordered
porous
structure
COF‐BSO3
within
hydrogel,
provides
channels
efficient
transport.
Besides,
sulfonate
groups
can
regulate
solvation
structure,
contributing
uniform
deposition
inhibiting
reactions.
Electrochemical
tests
demonstrate
stable
cycling
over
1800
h
with
minimal
polarization
symmetrical
cells.
This
work
innovatively
highlights
new
direction
tailoring
microstructures
functional
HEs
enhance
AZIBs,
showing
great
potential
toward
next‐generation
systems.
