Small Structures,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 25, 2025
A
poly(ethylene
terephthalate)
(PET)
nonwoven‐fabric‐based
triboelectric
nanogenerator
(NWF‐TENG)
with
high
energy‐harvesting
efficiency
at
ultralow
contact
frequencies
is
introduced,
enabled
by
the
concept
of
pseudo‐thickness.
PET‐based
NWF
exhibits
consistent
mechanical
properties
regardless
its
origin,
even
including
recycled
PET
sources,
providing
sustainable
benefits
NWF‐TENG
system.
Above
all,
this
study
first
demonstration
to
analyze
impact
thickness
changes
in
compressible
dielectric
materials
within
dielectric‐to‐dielectric
TENG
models.
Through
RC
decay
analysis,
it
revealed
that
peak‐to‐peak
voltage
NWF‐PET
2,653
V,
significantly
higher
than
conventional
noncompressible
film‐based
(F‐TENG).
After
combining
a
power
management
system,
achieves
continuous
direct
current
output
24.8
mW
m
−2
,
indicating
potential
for
powering
electronic
devices.
Lastly,
outstanding
charge
preservation
capability
due
sustained
state
during
compression
cycles
material.
In
an
application
test,
stopwatch
continuously
powered
0.0025
2
operating
frequency
0.2
Hz.
work,
valuable
insights
are
provided
into
design
and
optimization
energy
harvesting
systems
using
compressing
valid
pseudo‐thickness
concept.
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(11), С. 3700 - 3738
Опубликована: Янв. 1, 2024
Fluid-based
triboelectric
nanogenerators
(F-TENGs)
represent
a
cutting-edge
technology
that
leverages
fluids
as
contact
medium
to
harness
renewable
energy
through
electrification
(CE)
and
electrostatic
induction.
Abstract
Wearable
devices
play
an
indispensable
role
in
modern
life,
and
the
human
body
contains
multiple
wasted
energies
available
for
wearable
devices.
This
study
proposes
a
self‐sensing
self‐powered
system
(SS‐WS)
based
on
scavenging
waist
motion
energy
knee
negative
energy.
The
proposed
SS‐WS
consists
of
three‐degree‐of‐freedom
triboelectric
nanogenerator
(TDF‐TENG)
harvester
(NEH).
TDF‐TENG
is
driven
by
generated
signals
are
processed
deep
learning
recognizing
motion.
can
accurately
recognize
state
after
processing
Gate
Recurrent
Unit
model.
With
double
frequency
up‐conversion,
NEH
recovers
generation
powering
A
model
wearing
single
generate
power
27.01
mW
when
movement
speed
8
km
h
−1
,
density
reaches
0.3
W
kg
at
external
excitation
condition
3
Hz.
Experiments
analysis
prove
that
realize
effectively
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Янв. 31, 2025
The
large-scale
use
of
ample
marine
energy
will
be
one
the
most
important
ways
for
human
to
achieve
sustainable
development
through
carbon
neutral
plans.
As
a
burgeoning
technological
method
electromechanical
conversion,
triboelectric
nanogenerator
(TENG)
has
significant
advantages
in
its
low
weight,
cost-effectiveness,
and
high
efficiency
low-frequency
range.
It
can
realize
efficient
economical
harvesting
blue
by
constructing
floating
TENG.
This
paper
firstly
introduces
power
transfer
process
structural
composition
TENG
detail.
In
addition,
latest
research
works
on
basic
design
are
systematically
reviewed
category.
Finally,
advanced
progress
take-off
types
engineering
study
with
comprehensively
generalized.
Importantly,
challenges
problems
faced
situ
electrochemical
application
summarized
corresponding
prospects
suggestions
proposed
subsequent
direction
look
forward
promoting
commercialization
this
field.
Advanced Energy Materials,
Год журнала:
2024,
Номер
14(26)
Опубликована: Май 19, 2024
Abstract
Hydrokinetic
energy,
a
vital
renewable
resource,
holds
promise
for
addressing
fossil
fuel
shortages
to
ensure
sustainable
future.
This
study
proposes
an
efficient
and
stable
ocean
wave
energy
harvesting
system
that
combines
triboelectric
nanogenerator
(TENG),
electromagnetic
generator
(EMG)
with
planetary
gear
system,
driving
turbine.
The
turbine
transforms
the
up‐and‐down
motion
in
water
into
continuous,
unidirectional
rotational
motion.
An
EMG
device
accelerated
by
further
ensures
sustained
output
at
very
low
frequencies
(0.25
Hz)
boosts
upper
limit
of
power
generation
medium
high
frequencies.
Under
conditions
1
Hz
frequency,
TENG
component
yields
up
2200
V
122
µA,
while
average
is
15
80
mA.
Remarkably,
entire
maintains
steady
uninterrupted
even
extremely
Hz).
peak
outputs
components
are
115
350
mW,
respectively,
densities
32.55
329.78
W
m
−3
,
surpassing
prior
achievements.
research
demonstrates
self‐powered
applications
provides
method
amplify
forces,
enhancing
capabilities
practical
marine
environmental
monitoring.
Abstract
Ocean
energy
harvesting
based
on
a
triboelectric
nanogenerator
(TENG)
has
great
application
potential,
while
the
encapsulation
of
devices
in
water
poses
critical
issue.
Herein,
triboelectric–electromagnetic
hybrid
(TE‐HNG)
consisting
TENGs
and
electromagnetic
generators
(EMGs)
is
proposed
to
harvest
flow
energy.
A
magnetic
coupling
transmission
component
applied
replace
traditional
bearing
structures,
which
can
realize
fully
enclosed
packaging
TENG
achieve
long‐lasting
from
flow.
Under
intense
impact,
reduces
possibility
internal
gear
damage
due
excessive
torque,
indicating
superior
stability
robustness
compared
conventional
TENG.
At
waterwheel
rotates
speed
75
rpm,
TE‐HNG
generate
an
output
peak
power
114.83
mW,
corresponding
density
37.105
W
m
−3
.
After
5
h
continuous
operation,
electrical
attenuation
less
than
3%,
demonstrating
excellent
device
durability.
Moreover,
self‐powered
temperature
sensing
system
cathodic
protection
are
developed
illustrated.
This
work
provides
prospective
strategy
for
improving
TENGs,
benefits
practical
applications
large‐scale
blue
harvesting.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 29, 2024
Abstract
Deploying
triboelectric
nanogenerator
(TENG)
units
on
and
below
the
water
surface
has
been
a
conventional
method
for
harvesting
wave
energy.
However,
this
approach
restricts
TENG's
amplitude
to
that
of
waves,
limiting
actual
offshore
output.
Here,
new
placing
TENG
above
using
amplifier
is
reported.
This
addresses
issue
insufficient
in
traditional
energy
TENGs
achieves
higher
electrical
output
performance
real
conditions.
Moreover,
innovative
four‐helix
(FH‐TENG),
designed
with
special
pattern
cutting
bridging
techniques,
eliminates
need
internal
wires,
foundational
frameworks,
counterweights.
Results
show
FH‐TENG
placed
over
76%
increase
235%
enhancement
charge
compared
floating
directly
surface,
maximum
voltage,
transferred
current
reach
246
V,
7.9
µC,
156.1
µA,
respectively.
Importantly,
when
deployed
marine
environments,
system
generates
more
electric
than
lab
pool
under
same
peak
height,
providing
reliable
power
supply
solution.
work
establishes
precedent
deploying
lightweight
surface.
Abstract
Hybrid
nanogenerators
(HNGs)
represent
a
promising
avenue
for
water
energy
harvesting,
yet
their
commercial
viability
faces
hurdles
such
as
limited
power
output,
poor
coupling,
and
constrained
operational
lifespans.
Here,
highly
coupled
triboelectric‐electromagnetic
magnetic‐levitation
hybrid
nanogenerator
(ML‐HNG)
is
introduced
that
shows
great
potential
harvesting.
The
ML‐HNG
fulfills
the
challenges
of
high
strong
long
During
contact‐separation
process
triboelectric
(TENG),
changing
magnetic
flux
in
electromagnetic
generator's
coils
generates
difference
between
Cu
electrodes.
unique
design
employs
shared
coil
electrode
configuration,
which
enhances
coupling
without
adding
extra
volume.
This
integration
allows
to
achieve
multi‐frequency
vibrations
multiple
output
cycles
per
external
longitudinal
movement,
phenomenon
known
frequency
multiplication
effect.
With
an
average
density
1.69
W
m
−3
water,
provides
continuous
thermo‐hygrometer
can
quickly
drive
wireless
level
alarm
system
within
minute.
groundbreaking
holds
significant
promise
efficient
consistent
harvesting
low‐frequency
ocean
wave
energy,
marking
substantial
advancement
blue
technology.
