Advanced Materials,
Год журнала:
2024,
Номер
36(32)
Опубликована: Май 28, 2024
Boosting
stretchability
and
electric
output
is
critical
for
high-performance
wearable
triboelectric
nanogenerators
(TENG).
Herein,
the
first
time,
a
new
approach
tuning
composition
of
surface
functional
groups
through
surfactant
self-assembly
to
improve
tribopositivity,
where
assembly
increases
transferred
charge
density
relative
permittivity
water
polyurethane
(WPU).
Incorporating
bis(trifluoromethanesulfonyl)imide
(TFSI
Abstract
Reversible
and
recyclable
thermosets
have
garnered
increasing
attention
for
their
smart
functionality
sustainability.
However,
they
still
face
challenges
in
balancing
comprehensive
performance
dynamic
features.
Herein,
silicon
(Si)─oxygen
(O)
imidazole
units
covalent
bonds
are
coupled
to
generate
a
new
class
of
bio‐polyimines
(Bio‐Si‐PABZs),
endow
them
with
high
excellent
reprocessing
capability
acid‐degradability.
By
tailoring
the
molar
content
diamines,
this
Bio‐Si‐PABZs
displayed
both
markedly
glass
transition
temperature
(162
°C)
char
yield
at
800
°C
an
oxygen
atmosphere
(73.1%).
These
favorable
properties
outperformed
various
previously
reported
polyimines
competed
effectively
commercial
fossil‐based
polycarbonate.
Moreover,
scratch
(≈10
µ
m)
on
surface
samples
can
be
self‐healing
within
only
2
min,
effective
“
Bird
Nest
”‐to‐“
Torch
”
recycling
also
achieved
through
free
amines
solution.
Most
importantly,
bio‐based
siloxane
adhesive
derived
from
intermediate
Bio‐Si‐PABZ‐1
by
acidic
degradation
demonstrated
broad
robust
adhesion
substrates,
values
reaching
up
≈3.5
MPa.
For
first
time,
study
lays
scientific
groundwork
designing
polyimine
Si─O
units,
as
well
converting
plastic
wastes
into
thermal‐reversibility
renewable
adhesives.
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 6, 2025
Abstract
Low‐frequency
kinetic
energy,
abundant
in
the
ambient
environment,
presents
a
promising
source
for
powering
low‐power
devices
applications
such
as
marine
hydrographic
monitoring,
smart
city
construction,
and
self‐powered
wearable
devices.
Despite
its
potential,
efficiently
harvesting
energy
from
low‐frequency
motions
remains
significant
challenge.
This
review
provides
comprehensive
of
state‐of‐the‐art
harvesters,
focusing
on
their
device
architectures
underlying
mechanisms.
Key
approaches
discussed
include
frequency
upconversion
multistability
mechanisms
resonant
well
rotational
other
structures
nonresonant
harvesters.
By
analyzing
strengths,
limitations,
emerging
trends
these
technologies,
this
offers
valuable
insights
into
advancing
solutions.
Advanced Functional Materials,
Год журнала:
2023,
Номер
34(13)
Опубликована: Дек. 18, 2023
Abstract
Polyimide
(PI)
has
excellent
resistance
to
high
or
low
temperatures
due
its
unique
molecular
structure,
and
is
widely
used
in
advanced
electronics
power
systems
extreme
environments.
In
recent
years,
a
small
amount
of
studies
have
been
published
modulate
the
dynamic
behavior
PI
such
as
self‐healable,
recyclable,
degradable
abilities
by
adjusting
structure
chains
composition
monomers.
However,
conceptual
design,
formation
conditions,
application
prospects
are
still
unclear.
this
paper,
new
concepts
introduced
from
perspective
design
development
regulating
performance
area,
insulation,
based
on
work
other
representative
work.
Specifically,
appeals
researchers
involved
synthesis,
smart,
dielectric,
energy
storage,
insulation.
Advanced Materials,
Год журнала:
2024,
Номер
36(28)
Опубликована: Апрель 26, 2024
Abstract
With
the
continuous
upsurge
in
demand
for
wearable
energy,
nanogenerators
are
increasingly
required
to
operate
under
extreme
environmental
conditions.
Even
though
they
at
cutting
edge
of
technology,
have
difficulty
producing
high‐quality
electrical
output
very
temperatures.
Here,
a
triboelectric
basalt
textile
(TBT)
with
an
ultrawide
operational
temperature
range
(from
−196
520
°C)
is
created
employing
material
as
main
body.
The
power
density
TBT,
contrast
most
conventional
nanogenerators,
would
counterintuitively
rise
by
2.3
times
740.6
mW
m
−2
after
heating
100
°C
because
high
will
enhance
material's
interface
polarization
and
electronic
kinetic
energy.
TBT
retains
≈55%
its
initial
even
flame
alcohol
lamp
(520
°C).
Surprisingly,
TBTs
voltage
may
retain
over
85%
value
submerging
liquid
nitrogen.
exceptional
resistance
heat
cold
indicates
possible
use
low
latitudes,
altitudes,
deserts,
space
settings.
