Biomacromolecules,
Год журнала:
2024,
Номер
25(7), С. 4384 - 4393
Опубликована: Июнь 1, 2024
Traditional
hydrogel-based
wearable
sensors
with
flexibility,
biocompatibility,
and
mechanical
compliance
exhibit
potential
applications
in
flexible
electronics.
However,
the
low
sensitivity
poor
environmental
resistance
of
traditional
hydrogels
severely
limit
their
practical
application.
Herein,
high-ion-conducting
poly(vinyl
alcohol)
(PVA)
nanocomposite
were
fabricated
applied
for
harsh
environments.
MXene
ion-conducting
microchannels
poly(sodium
4-styrenesulfonate)
ion
sources
contributed
to
directional
transport
abundant
free
ions
hydrogel,
which
significantly
improved
mechanical–electric
conversion
piezoelectric
triboelectric
sensors.
More
importantly,
glycerol
as
an
antifreezing
agent
enabled
function
Therefore,
hydrogel
exhibited
high
gauge
factor
(GF)
at
−20
°C
(GF
=
3.37)
60
3.62),
enabling
sensor
distinguish
different
writing
letters
sounding
words.
Meanwhile,
generators
showed
excellent
performance
regardless
low-
(−20
°C)
or
high-
(60
temperature
environments,
can
be
a
visual
feedback
system
information
transmission
without
external
power
sources.
This
work
provides
self-powered
that
electronics
under
conditions.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(13)
Опубликована: Дек. 14, 2023
Abstract
Artificial
electronic
skin
(E‐skin),
a
class
of
promising
materials
mimicking
the
physical‐chemical
and
sensory
performance
human
skin,
has
gained
extensive
interest
in
field
health‐monitoring
robotic
skins.
However,
developing
E‐skin
simultaneously
achieving
high
resilience,
hysteresis‐free,
absent
external
power
is
always
formidable
challenge.
Herein,
liquid‐free
eutectic
gel‐based
self‐powered
with
fatigue
resistance,
conductivity
prepared
by
introducing
hydroxypropyl
cellulose
(HPC)
into
metal
salt‐based
deep
solvents
(MDES).
The
unique
structural
design
cellulose‐anchored
permanent
entangled
poly(acrylic
acid)
(PAA)
chain,
combination
rapid
broken/reconstruction
dense
dynamic
sacrificial
bonds,
realizes
fabrication
high‐elastic
negligible
hysteresis.
This
further
demonstrates
practical
application
cellulose‐based
eutectogel
transmittance
(92%),
(36.6
mS
m
−1
),
resilience
(98.1%),
excellent
environment
stability
robust
triboelectric
nanogenerator
for
energy
harvesting
health‐caring
human‐machine
interaction.
ACS Energy Letters,
Год журнала:
2024,
Номер
9(4), С. 1803 - 1825
Опубликована: Март 29, 2024
Growing
concern
regarding
the
impact
of
fossil
fuels
has
led
to
demands
for
development
green
and
renewable
materials
advanced
electrochemical
energy
storage
devices.
Biopolymers
with
unique
hierarchical
structures
physicochemical
properties,
serving
as
an
appealing
platform
advancement
sustainable
energy,
have
found
widespread
application
in
gel
electrolytes
supercapacitors.
In
this
Review,
we
outline
structure
characteristics
various
biopolymers,
discuss
proposed
mechanisms
assess
evaluation
metrics
supercapacitor
devices,
further
analyze
roles
biopolymer
context.
The
state-of-the-art
performance
biopolymer-based
hydrogel
supercapacitors
their
multiple
functionalities
are
summarized,
while
underscoring
current
technical
challenges
potential
solutions.
This
Review
is
intended
offer
a
thorough
overview
recent
developments
electrolytes,
highlighting
research
concerning
devices
avenues
development.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(13), С. 16712 - 16723
Опубликована: Март 20, 2024
The
fabrication
of
carbon
aerogels
with
ultralow
density,
high
electrical
conductivity,
and
ultraelasticity
still
remains
substantial
challenges.
This
study
utilizes
electrospun
polyimide
aerogel
as
the
source
to
fabricate
flexible
nanofibrous
(PI-CNA)
capable
multifunctional
applications.
lightweight
PI-CNA
based
piezoresistive
sensor
shows
a
wide
linear
range
(0–217
kPa),
rapid
response/recovery
time,
fatigue
resistance
(12,000
cycles).
More
importantly,
superior
pressure
sensing
enables
for
all-range
healthcare
sensing,
including
pulse
monitoring,
physiological
activity
detection,
speech
recognition,
gait
recognition.
Moreover,
EMI
SE
A
coefficient
reach
45
dB
0.62,
respectively,
indicating
outstanding
absorption
dominated
shielding
effects
due
multiple
reflections
absorption.
Furthermore,
exhibits
satisfying
Joule
heating
performance
up
120
°C
response
time
(10–30
s)
under
low
supply
voltages
(1.5–5
V)
possesses
sufficient
reliability
repeatability
in
long-term
repeated
heating/cooling
cycles.
fabricated
significant
potential
applications
wearable
technologies,
energy
conversion,
electronic
skin,
artificial
intelligence.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(7)
Опубликована: Ноя. 1, 2023
Abstract
Printed
zinc
ion
micro‐batteries
(PZIMBs)
possess
characteristics
such
as
miniaturization,
customizability,
and
affordability,
making
them
highly
promising
for
the
field
of
flexible
electronic
devices.
Nevertheless,
current
development
PZIMBs
is
seriously
hindered
by
their
limited
areal
capacity.
In
this
study,
with
a
high
capacity
are
conducted
based
on
3D
printing
technology
optimizing
material
properties,
electrode
ink
formulation,
parameters.
The
cathode
material,
polyvinylpyrrolidone‐induced
ammonium
vanadate
(P‐NVO)
nanobelt,
exhibits
457.3
mAh
g
−1
at
0.1
mA
,
along
good
cycling
performance
rate
capability.
double‐network
hydrogel
electrolyte,
composed
crosslinked
polyacrylamide‐polyvinylpyrrolidone
(PAM‐PVP
electrolyte),
demonstrates
excellent
ionic
conductivity
(107.22
mS
cm
),
stretchability
(970%),
viscosity.
constructed
exhibit
4.02
−2
0.5
mechanical
flexibility.
Moreover,
through
integration
pressure
sensors,
an
interactive
system
developed
that
resembles
skin,
enables
practical
applications
wearable
This
study
presents
novel
approach
fabricating
capacity,
thereby
contributing
to
propelling
advancement
energy
storage.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(11)
Опубликована: Дек. 3, 2023
Abstract
The
cracks
in
flexible
triboelectric
nanogenerators
(TENG)
cannot
naturally
repair
themselves
during
low‐temperature
operation,
which
significantly
restricts
their
practical
applications.
Yet,
the
development
of
elastomers
capable
self‐repair
at
low
temperatures
has
remained
a
formidable
challenge.
In
this
study,
dual
dynamic
cross‐linking
network
using
multiple
hydrogen
bonds
and
β
‐hydroxy
esters
is
constructed
to
fabricate
fully
bio‐based
elastomer
known
as
PLMBE.
This
can
be
stretched
up
an
impressive
1200%
its
original
length
possesses
remarkable
autonomous
self‐healing
capability
even
under
harsh
conditions,
including
(−10
°C,
12
h,
with
75%
efficiency
rate)
exposure
supercooled,
high‐concentration
saline
(10%
NaCl
solution
−10
64%
rate).
These
properties
are
attributed
elastomer's
glass
transition
temperature
(Tg)
−30
°C
abundance
hydrogen‐bonded
supramolecular
interactions.
Importantly,
highly
suitable
layer
for
creating
TENG
(Bio‐TENG)
.
results
demonstrate
that
Bio‐TENG
achieve
output
power
density
2.4
W
m
−2
,
voltage
recovers
95%
after
°C.
Consequently,
these
have
promising
applications
various
fields,
energy
storage
devices.
