Advanced Materials Technologies,
Год журнала:
2024,
Номер
9(10)
Опубликована: Март 19, 2024
Abstract
Disc
and
cylinder‐based
triboelectric
nanogenerators
(TENGs)
have
great
potential
for
harvesting
wind
energy.
However,
a
significant
challenge
faced
by
these
TENGs
is
the
wear
issues
arising
from
required
close
contact
between
tribo‐materials,
especially
at
high
frequencies.
In
response
to
this
challenge,
gear‐slider
TENG
(GS‐TENG)
designed
transition
continuous
close‐contact
friction
mode
intermittent
contact.
Working
in
unison
with
central
gear
two
sliders,
four
units
housed
within
GS‐TENG
yield
electrical
output
through
periodic
separation.
During
durability
test
of
845
000
cycles,
short‐circuit
current
only
experiences
slight
decrease,
going
25.38
24.03
µA,
retaining
94.68%
its
initial
value.
Operating
matched
impedance
6
MΩ,
M1
achieves
peak
power
density
386
mW
m
−2
,
exceeding
some
previously
proposed
solutions
harvesting.
When
integrated
into
speed
sensing
system,
has
wide
range
(13.1
28
s
−1
)
maximum
error
3.39%.
This
work
demonstrates
rotation‐to‐translation
strategy
that
lays
foundation
long‐term,
high‐frequency
energy
development
self‐powered
system.
Advanced Materials,
Год журнала:
2024,
Номер
36(52)
Опубликована: Март 22, 2024
Abstract
Triboelectric
nanogenerator
(TENG)
manifests
distinct
advantages
such
as
multiple
structural
selectivity,
diverse
selection
of
materials,
environmental
adaptability,
low
cost,
and
remarkable
conversion
efficiency,
which
becomes
a
promising
technology
for
micro‐nano
energy
harvesting
self‐powered
sensing.
Tribo‐dielectric
materials
are
the
fundamental
core
components
high‐performance
TENGs.
In
particular,
charge
generation,
dissipation,
storage,
migration
dielectrics,
dynamic
equilibrium
behaviors
determine
overall
performance.
Herein,
comprehensive
summary
is
presented
to
elucidate
dielectric
transport
mechanism
tribo‐dielectric
material
modification
principle
toward
The
contact
electrification
started
first,
followed
by
introducing
basic
Subsequently,
mechanisms
strategies
highlighted
regarding
physical/chemical,
surface/bulk,
coupling,
structure
optimization.
Furthermore,
representative
applications
based
TENGs
power
sources,
sensors
demonstrated.
existing
challenges
potential
opportunities
advanced
outlined,
guiding
design,
fabrication,
materials.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 6, 2024
Abstract
In
the
environment,
there
is
an
abundance
of
gust
energy
which
challenging
to
harvest
with
conventional
rotating
wind
turbines,
such
as
gusts
generated
by
passing
vehicles
along
roadsides.
Addressing
irregular
and
low‐frequency
characteristics
gusts,
a
bladeless
turbine
triboelectric
nanogenerator
(BWT‐TENG)
enhanced
aerodynamic
performance
proposed,
enabling
effective
harvesting
random
energy.
First,
cylindrical
bluff
body
shape
designed,
its
principles
under
gust‐driven
conditions
are
elucidated
through
computational
fluid
dynamics
method.
Subsequently,
parameter
optimization
conducted
for
multilayered
TENG.
Systematic
experiments
demonstrated
that
BWT‐TENG
achieved
peak
power
density
4.08
W
m
−3
driven
10
s
−1
,
can
even
operate
at
frequencies
low
0.1
Hz.
Finally,
showcased
powering
warning
light
in
simulated
rainfall
environment
from
real
roadside
wireless
gyroscopic
sensors,
thereby
achieving
self‐powered
structural
health
monitoring
roads
or
bridges.
This
work
provides
novel
strategy
utilizing
TENGs
environmental
demonstrates
vast
potential
field
monitoring.
ACS Applied Nano Materials,
Год журнала:
2024,
Номер
7(8), С. 8407 - 8423
Опубликована: Апрель 4, 2024
Triboelectric
nanogenerators
(TENGs)
developed
from
eco-friendly
natural
materials
rather
than
traditional
electronic
are
more
favorable
for
biocompatible
applications
and
use
in
sustainable
life-cycle
analysis.
Silk
fibroin
(SF)
has
emerged
as
an
abundant
biomaterial
that
shows
great
potential
the
preparation
of
TENGs.
Silk-based
triboelectric
(SF-TENGs)
have
green
energy
harvesting
properties,
environmentally
friendly,
biocompatible,
not
fully
present
conventional
TENGs,
important
next
generation
self-powered
devices.
In
this
review,
latest
progress
SF-TENGs,
including
their
applied
materials,
structural
manufacturing
processes,
application
scenarios,
is
discussed.
These
SF-TENGs
show
emerging
well
smart
living
medical
assistance.
addition,
value
been
further
explored,
possibility
main
challenges
expanding
applying
to
field
microneedles
(MNs)
