Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(24)
Published: April 9, 2021
Abstract
Stretchable
self‐healing
supercapacitors
(SCs)
can
operate
under
extreme
deformation
and
restore
their
initial
properties
after
damage
with
considerably
improved
durability
reliability,
expanding
opportunities
in
numerous
applications,
including
smart
wearable
electronics,
bioinspired
devices,
human–machine
interactions,
etc.
It
is
challenging,
however,
to
achieve
mechanical
stretchability
self‐healability
energy
storage
technologies,
wherein
the
key
issue
lies
exploitation
of
ideal
electrode
electrolyte
materials
exceptional
ability
besides
conductivity.
Conductive
hydrogels
(CHs)
possess
unique
hierarchical
porous
structure,
high
electrical/ionic
conductivity,
broadly
tunable
physical
chemical
through
molecular
design
structure
regulation,
holding
tremendous
promise
for
stretchable
SCs.
Hence,
this
review
innovatively
constructed
a
focus
on
CH
based
electrodes
electrolytes
First,
common
synthetic
approaches
CHs
are
introduced;
then
stretching
strategies
involved
systematically
elaborated;
followed
by
an
explanation
conductive
mechanism
CHs;
focusing
CH‐based
SCs;
subsequently,
application
SCs
electronics
discussed;
finally,
conclusion
drawn
along
views
challenges
future
research
directions
regarding
field
Chemical Society Reviews,
Journal Year:
2022,
Volume and Issue:
52(2), P. 473 - 509
Published: Dec. 9, 2022
Hydrogel-based
conductive
materials
for
smart
wearable
devices
have
attracted
increasing
attention
due
to
their
excellent
flexibility,
versatility,
and
outstanding
biocompatibility.
This
review
presents
the
recent
advances
in
multifunctional
hydrogels
electronic
devices.
First,
with
different
components
are
discussed,
including
pure
single
network
based
on
polymers,
additional
additives
(i.e.,
nanoparticles,
nanowires,
nanosheets),
double
additives.
Second,
a
variety
of
functionalities,
self-healing,
super
toughness,
self-growing,
adhesive,
anti-swelling,
antibacterial,
structural
color,
hydrophobic,
anti-freezing,
shape
memory
external
stimulus
responsiveness
introduced
detail.
Third,
applications
flexible
illustrated
strain
sensors,
supercapacitors,
touch
panels,
triboelectric
nanogenerator,
bioelectronic
devices,
robot).
Next,
current
challenges
facing
summarized.
Finally,
an
imaginative
but
reasonable
outlook
is
given,
which
aims
drive
further
development
future.
Materials Today Physics,
Journal Year:
2020,
Volume and Issue:
15, P. 100258 - 100258
Published: Aug. 5, 2020
With
the
rapidly
growing
attention
to
human-robot
interfaces,
soft
robotics
has
attracted
a
great
deal
of
interest.
Soft
robots
have
diverse
advantages,
including
compliancy
and
safety,
which
contribute
seamless
interactions
with
humans.
To
boost
progress
in
field,
there
is
need
for
compliant
materials.
Hydrogels
are
promising
as
materials
because
their
outstanding
features,
high
stretchability,
transparency,
ion
conductivity,
biocompatibility.
Furthermore,
hydrogels
provide
innovative
capabilities
based
on
unique
responsiveness
stimuli.
In
this
review,
we
discuss
features
hydrogel-based
robots,
from
fundamental
working
mechanisms
notable
applications.
Finally,
suggest
perspectives
future
directions
that
addressing
potential
challenges
field
hydrogel
robotics.
Small,
Journal Year:
2021,
Volume and Issue:
18(5)
Published: Oct. 17, 2021
Abstract
Conductive
hydrogels
can
be
prepared
by
incorporating
various
conductive
materials
into
polymeric
network
hydrogels.
In
recent
years,
have
been
developed
and
applied
in
the
field
of
strain
sensors
owing
to
their
unique
properties,
such
as
electrical
conductivity,
mechanical
self‐healing,
anti‐freezing
properties.
These
remarkable
properties
allow
hydrogel‐based
show
excellent
performance
for
identifying
external
stimuli
detecting
human
body
movement,
even
at
subzero
temperatures.
This
review
summarizes
application
fabrication
working
different
modes.
Finally,
a
brief
prospectus
development
future
is
provided.
Nature Communications,
Journal Year:
2019,
Volume and Issue:
10(1)
Published: July 31, 2019
Intrinsically
stretchable
conductors
have
undergone
rapid
development
in
the
past
few
years
and
a
variety
of
strategies
been
established
to
improve
their
electro-mechanical
properties.
However,
ranging
from
electronically
ionically
conductive
materials,
they
are
usually
vulnerable
either
large
deformation
or
at
high/low
temperatures,
mainly
due
fact
that
domains
generally
incompatible
with
neighboring
elastic
networks.
This
is
problem
overlooked
remains
challenging
address.
Here,
we
introduce
synergistic
effect
between
zwitterionic
nanochannels
dynamic
hydrogen-bonding
networks
break
limitations.
The
conductor
highly
transparent
(>90%
transmittance),
ultra-stretchable
(>10,000%
strain),
high-modulus
(>2
MPa
Young's
modulus),
self-healing,
capable
maintaining
stable
conductivity
during
different
temperatures.
Transparent
integrated
systems
further
demonstrated
via
3D
printing
its
precursor
could
achieve
diverse
sensory
capabilities
towards
strain,
temperature,
humidity,
etc.,
even
recognition
liquids.
Advanced Healthcare Materials,
Journal Year:
2021,
Volume and Issue:
10(17)
Published: May 6, 2021
Abstract
Cardiovascular
diseases
account
for
the
highest
mortality
globally,
but
recent
advances
in
wearable
technologies
may
potentially
change
how
these
illnesses
are
diagnosed
and
managed.
In
particular,
continuous
monitoring
of
cardiovascular
vital
signs
early
intervention
is
highly
desired.
To
this
end,
flexible
sensors
that
can
be
comfortably
worn
over
long
durations
gaining
significant
attention.
review,
advanced
signals
outlined
discussed.
Specifically,
functional
materials,
configurations,
mechanisms,
heart
rate,
blood
pressure,
oxygen
saturation,
glucose
highlighted.
Different
mechanisms
bioelectric,
mechano‐electric,
optoelectric,
ultrasonic
presented
to
monitor
from
different
body
locations.
Present
challenges,
possible
strategies,
future
directions
also
With
rapid
development,
will
applicable
both
medical
diagnosis
daily
healthcare
use
tackling
diseases.
Advanced Materials,
Journal Year:
2022,
Volume and Issue:
34(15)
Published: Feb. 16, 2022
Conducting
polymer
hydrogels
are
promising
materials
in
soft
bioelectronics
because
of
their
tissue-like
mechanical
properties
and
the
capability
electrical
interaction
with
tissues.
However,
it
is
challenging
to
balance
conductivity
stretchability:
pure
conducting
highly
conductive,
but
they
brittle;
while
incorporating
network
a
form
double
can
improve
stretchability,
its
significantly
decreases.
Here,
problem
addressed
by
concentrating
poorly
crosslinked
precursor
hydrogel
high
content
ratio
achieve
densified
double-network
(5.5
wt%
polymer),
exhibiting
both
(≈10
S
cm-1
)
large
fracture
strain
(≈150%),
addition
biocompatibility,
softness,
low
swelling
ratio,
desired
electrochemical
for
bioelectronics.
A
surface
grafting
method
further
used
an
adhesive
layer
on
hydrogel,
enabling
robust
rapid
bonding
Furthermore,
proposed
applied
show
high-quality
physiological
signal
recording
reliable,
low-voltage
stimulation
based
vivo
rat
model.
This
provides
ideal
strategy
reliable
tissue-device
integration
communications.
Advanced Functional Materials,
Journal Year:
2019,
Volume and Issue:
30(5)
Published: Nov. 18, 2019
Abstract
2D
conductive
nanosheets
are
central
to
electronic
applications
because
of
their
large
surface
areas
and
excellent
properties.
However,
tuning
the
multifunctions
hydrophilicity
still
challenging.
Herein,
a
green
strategy
is
developed
for
fabricating
conductive,
redox‐active,
water‐soluble
via
self‐assembly
poly(3,4‐ethylenedioxythiophene)
(PEDOT)
on
polydopamine‐reduced
sulfonated
graphene
oxide
(PSGO)
template.
The
conductivity
highly
improved
by
PSGO.
redox
active
due
abundant
catechol
groups
can
be
used
as
versatile
nanofillers
in
developing
adhesive
hydrogels.
create
mussel‐inspired
environment
inside
hydrogel
networks
endow
with
long‐term
repeatable
adhesiveness.
This
biocompatible
implanted
biosignals
detection
vivo.
assembling
adapted
producing
diverse
multifunctional
nanomaterials,
various
potential
bioelectronics.
