ACS Applied Materials & Interfaces,
Journal Year:
2021,
Volume and Issue:
13(4), P. 5614 - 5624
Published: Jan. 25, 2021
Stretchable
ionogels
have
recently
emerged
as
promising
soft
and
safe
ionic
conductive
materials
for
use
in
wearable
stretchable
electrochemical
devices.
However,
the
complex
preparation
process
insufficient
thermomechanical
stability
greatly
limit
precise
rapid
fabrication
application
of
ionogels.
Here,
we
report
an
situ
3D
printing
method
fabricating
high-performance
single
network
chemical
advanced
strain
sensors.
The
consist
a
special
cross-linking
constructed
by
poly(ionic
liquid)
hyperbranched
polymer
(macro-cross-linkers)
that
exhibits
high
stretchability
(>1000%),
superior
room-temperature
conductivity
(up
to
5.8
mS/cm),
excellent
(−75
250
°C).
sensors
based
on
low
response
time
(200
ms),
sensitivity
with
temperature
independence,
long-term
durability
(2000
cycles),
tolerance
(−60
°C)
can
be
used
human
motion
This
work
provides
new
strategy
design
highly
stable
electronic
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(24)
Published: May 6, 2021
Abstract
Marine
animals,
such
as
leptocephalus
and
jellyfish,
can
sense
external
stimuli
achieve
optical
camouflage
in
the
aquatic
environment.
Fabricating
an
intelligent
soft
sensor
that
mimic
capabilities
of
transparent
marine
animals
function
underwater
enable
transformative
applications
various
novel
fields.
However,
previously
reported
sensors
struggle
to
meet
requirements
adhesion,
self‐healing
ability,
transparency,
stable
conductivity
Herein,
high‐performance
ionogels
by
virtue
ion–dipole
ion–ion
interactions
between
fluorine‐rich
poly(ionic
liquid)
ionic
liquid
are
designed.
The
hydrophobic
dynamic
viscoelastic
networks
provide
excellent
properties
for
ionogels,
including
adjustable
mechanical
properties,
adhesiveness,
conductivity,
3D
printability.
A
mechanically
compliant
visually
invisible
based
on
ionogel
is
developed.
This
camouflage,
human‐body‐motion
detection,
barrier‐free
communication
contactless
sensing
mechanism
changing
electron
transfer
pathway
proposed.
Several
interesting
functions,
detection
water
environment
changes,
recognition
objects,
delivery
information,
even
identification
human
standing
posture
be
realized.
Importantly,
avoid
fatigue
physical
damage
process.
Materials Horizons,
Journal Year:
2020,
Volume and Issue:
8(2), P. 351 - 369
Published: Sept. 3, 2020
As
one
of
the
most
outstanding
materials,
analysis
structure
and
function
hydrogels
has
been
extensively
carried
out
to
tailor
adapt
them
various
fields
application.
The
high
water
content,
which
is
beneficial
for
plenty
applications
in
biomedical
setting,
prevents
adoption
flexible
electronics
sensors
real
life
applications,
because
lose
their
excellent
properties,
including
conductivity,
transparency,
flexibility,
etc.,
upon
freezing
at
sub-zero
temperatures.
Therefore,
depressing
liquid-solid
phase
transition
temperature
a
powerful
means
expand
application
scope
hydrogels,
will
benefit
chemical
engineering
materials
science
communities.
This
review
summarizes
recent
research
progress
anti-freezing
hydrogels.
At
first,
approaches
generation
(hydro)gels
are
introduced
mechanisms
performances
briefly
discussed.
These
either
based
on
addition
salts,
alcohols
(cryoprotectants
organohydrogels),
ionic
liquids
(ionogels),
modification
polymer
network
or
combination
several
techniques.
Then,
concise
overview
leveraged
by
widened
resistance
provided
future
areas
developments
envisaged.
Advanced Functional Materials,
Journal Year:
2021,
Volume and Issue:
31(42)
Published: July 20, 2021
Abstract
Inspired
by
the
human
skin,
electronic
skins
(e‐skins)
composed
of
various
flexible
sensors,
such
as
strain
sensor,
pressure
shear
force
temperature
and
humility
delicate
circuits,
are
emerged
to
mimic
sensing
functions
skins.
In
this
review,
strategies
realize
versatile
functionalities
natural
skin‐like
e‐skins,
including
strain‐,
pressure‐,
force‐,
temperature‐
humility‐sensing
abilities,
well
self‐healing
ability
other
summarized.
Some
representative
examples
high‐performance
e‐skins
their
applications
outlined
discussed.
Finally,
outlook
future
is
presented.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(11)
Published: Feb. 11, 2021
Abstract
Soft
ionic
conductors,
such
as
hydrogels
and
ionogels,
have
enabled
stretchable
transparent
ionotronics,
but
they
suffer
from
key
limitations
inherent
to
the
liquid
components,
which
may
leak
evaporate.
Here,
novel
liquid‐free
conductive
elastomers
(ICE)
that
are
copolymer
networks
hosting
lithium
cations
associated
anions
via
bonds
hydrogen
demonstrated,
intrinsically
immune
leakage
evaporation.
The
ICEs
show
extraordinary
mechanical
versatility
including
excellent
stretchability,
high
strength
toughness,
self‐healing,
quick
self‐recovery,
3D‐printability.
More
intriguingly,
can
defeat
conflict
of
versus
toughness—a
compromise
well
recognized
in
mechanics
material
science—and
simultaneously
overcome
between
conductivity
properties,
is
common
for
ionogels.
Several
ionotronics
based
on
ICE
further
developed,
resistive
force
sensors,
multifunctional
skins,
triboelectric
nanogenerators
(TENGs),
not
subject
previous
gel‐based
devices,
leakage,
evaporation,
weak
hydrogel–elastomer
interfaces.
Also,
3D
printability
demonstrated
by
printing
a
series
structures
with
fine
features.
findings
offer
promise
variety
requiring
environmental
stability
durability.
Materials Horizons,
Journal Year:
2021,
Volume and Issue:
8(10), P. 2761 - 2770
Published: Jan. 1, 2021
Underwater
sensing
has
extraordinary
significance
in
ocean
exploration
(e.g.,
marine
resources
development,
biology
research,
and
environment
reconnaissance),
but
the
great
difference
between
land
seriously
prevents
current
traditional
sensors
from
being
applied
underwater
sensing.
Herein,
we
reported
a
fully
hydrophobic
ionogel
with
long-term
adhesion
stability
as
highly
efficient
wearable
sensor
that
displays
an
excellent
performance,
including
high
sensitivity,
rapid
responsiveness
superior
durability.
Of
greater
significance,
showed
tremendous
potential
applications
for
communication,
posture
monitoring
biological
research.
Nature Communications,
Journal Year:
2022,
Volume and Issue:
13(1)
Published: Aug. 18, 2022
Stretchable
ionic
conductors
are
considerable
to
be
the
most
attractive
candidate
for
next-generation
flexible
ionotronic
devices.
Nevertheless,
high
conductivity,
excellent
mechanical
properties,
good
self-healing
capacity
and
recyclability
necessary
but
can
rarely
satisfied
in
one
material.
Herein,
we
propose
an
conductor
design,
dynamic
supramolecular
conductive
elastomers
(DSICE),
via
phase-locked
strategy,
wherein
locking
soft
phase
polyether
backbone
conducts
lithium-ion
(Li+)
transport
combination
of
disulfide
metathesis
stronger
quadruple
hydrogen
bonds
hard
domains
contributes
versatility.
The
dual-phase
design
performs
its
own
functions
conflict
among
capability,
compatibility
thus
defeated.
well-designed
DSICE
exhibits
conductivity
(3.77
×
10-3
S
m-1
at
30
°C),
transparency
(92.3%),
superior
stretchability
(2615.17%
elongation),
strength
(27.83
MPa)
toughness
(164.36
MJ
m-3),
capability
(~99%
room
temperature)
favorable
recyclability.
This
work
provides
interesting
strategy
designing
advanced
offers
promise
devices
or
solid-state
batteries.
Advanced Materials,
Journal Year:
2021,
Volume and Issue:
33(12)
Published: Feb. 12, 2021
Abstract
Human
fingers
exhibit
both
high
sensitivity
and
wide
tactile
range.
The
finger
skin
structures
are
designed
to
display
gradient
microstructures
compressibility.
Inspired
by
the
mechanical
Young's
modulus
distribution,
an
electric‐field‐induced
cationic
crosslinker
migration
strategy
is
demonstrated
prepare
ionogels.
Due
of
crosslinkers,
ionogels
more
than
four
orders
magnitude
difference
between
anode
cathode
side,
enabling
ionogel‐based
flexible
iontronic
sensors
having
high‐sensitivity
broader‐range
detection
(from
3
×
10
2
2.5
6
Pa)
simultaneously.
Moreover,
owing
remarkable
properties
ionogels,
also
show
good
long‐time
stability
(even
after
000
cycles
loadings)
excellent
performance
over
a
temperature
range
−108
300
°C).
further
integrated
on
soft
grips,
exhibiting
under
various
conditions.
These
attractive
features
demonstrate
that
will
be
promising
candidates
for
smart
sensor
applications
in
complex
extreme
