Water
energy-converting
techniques
that
focus
on
interfacial
charge
separation
and
transfer
have
aroused
significant
attention.
However,
the
water-repelling
nature
leads
to
a
less
dense
liquid
layer
sharp
gradient
of
velocity,
which
limits
its
output
performance.
Here,
water
sliding
generator
(WSG)
based
smooth
liquid-like/semiconductor
surface
(SLSS)
is
developed
harnesses
full
advantage
friction.
The
prepared
SLSS
not
only
retained
slippery
surface's
close
contact
with
droplets
characteristic
without
residue
but
also
exhibited
an
enhanced
friction
effect
low-friction
surface.
(SLSS-WSG)
exerts
outstanding
energy
harvesting
high
(≈16
V
≈60
µA)
demonstrated,
capability
in
series
connection,
dual
operation
power
generation
self-cleaning
effect,
physical
chemical
stability
(continuous
current
scour
sun
exposure).
can
be
integrated
photovoltaic
panels,
enabling
them
generate
electricity
from
water-sliding
during
rainy
days,
compensating
for
reduced
panels
overcast
weather.
Furthermore,
it
allows
collection
even
nights.
potentially
applied
various
fields,
showing
great
potential
development
water-based
clean
energy.
Abstract
Electromagnetic
generators
are
conventionally
used
to
harvest
energy
from
large
water
bodies,
but
they
ineffective
for
harvesting
low
hydro‐energy,
such
as
raindrops
or
fogs,
due
their
bulky,
heavy
and
immovable.
Unfortunately,
developing
new
strategies
that
lightweight,
small,
have
high
conversion
efficiency
convert
hydro‐energy
into
electricity
remains
a
challenge.
Herein,
flexible
droplet‐based
hybrid
generator
(DHEG)
consisting
of
(DEG)
an
electromagnetic
(EMG)
is
proposed
the
dual
droplets
simultaneously.
The
DHEG
assembled
by
facilely
merging
DEG
EMG
using
conductive
elastic
multi‐walled
carbon
nanotubes/polydimethylsiloxane
(MWCNTs/PDMS)
film
.
MWCNTs/PDMS
can
not
only
serve
bottom
electrode
switching
on
DEG,
also
component
vibrate
coil
when
impacted
droplets.
Activated
single
58.2
µL
droplet
falling
height
50
cm,
peak
voltage,
current
power
generated
≈84.6
V,
≈19.85
mA,
≈595.8
µW,
respectively.
up
≈13.8%.
This
may
provide
promising
strategy
effectively
raindrops.
ACS Applied Energy Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 9, 2025
The
rapid
development
of
energy
harvesting
devices,
driven
by
the
need
for
sustainable
energy,
has
led
to
innovative
solutions
in
nanotechnology.
Triboelectric
nanogenerators
(TENGs)
stand
out
their
ability
convert
mechanical
from
various
environmental
sources
into
electrical
power.
This
review
delves
recent
advancements
TENGs,
particularly
those
focusing
on
liquid–liquid
interfaces.
Liquid–liquid
charge
exchange
(L-LCE)
an
emerging
innovation,
offer
several
advantages
over
traditional
solid-based
including
enhanced
adaptability
and
efficiency
under
variable
conditions.
triboelectric
effect
electrostatic
induction,
essential
enable
familiar
sources,
such
as
human
motion,
wind,
ocean
waves,
vibrations.
explores
transfer
mechanisms
between
immiscible
liquids,
deionized
water
transformer
oil,
electric
double
layer
(EDL)
formation
at
interface.
Factors
ion
concentration
chemical
composition
influencing
EDL
are
analyzed.
interactions
allow
higher
surface
densities
a
superior
efficiency.
makes
L-LCE
TENGs
promising
small-scale
applications
wearable
electronics
medical
devices
well
large-scale
systems.
potential
remote,
off-grid
environments
is
also
discussed,
where
power
may
not
be
viable.
covers
current
mechanisms,
applications,
future
highlighting
transformative
role
technologies.
Advanced Materials Technologies,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 24, 2025
Abstract
The
icing
of
transmission
lines,
primarily
caused
by
frost
weather‐induced
freezing
disasters,
poses
a
severe
threat
to
the
grids.
Real‐time
early
warning
for
monitoring
is
great
significance
in
preventing
power
outages
and
ensuring
stable
energy
supply.
This
study
proposes
multi‐dimensional
sensing
method
thickness,
shape,
sag
based
on
triboelectric
nanogenerator
(TENG).
pressure
model
TSS‐TENG
(Thickness‐shape‐sag
TENG)
established,
prototype
device
developed.
Experimental
verification
this
shows
that
within
range
0–20
mm
achieves
high‐precision
measurement
with
durability
stability,
coefficient
determination
R
2
its
linear
regression
consistently
maintained
between
0.98
0.99.
To
achieve
high
degree
consistency
experimental
signals
theoretical
predictions,
multi‐channel
signal
acquisition
unit
designed,
enabling
TSS‐TENGs
effectively
recognize
shapes.
reduce
complexity
processing,
waveform
transformation
designed
efficient
statistics
signals.
integrates
self‐powered
energy,
recognition,
measurement,
thereby
providing
robust
technical
support
safe
operation
Abstract
Triboelectric
nanogenerators
(TENGs)
are
highly
efficient
devices
for
harvesting
mechanical
energy.
Nevertheless,
conventional
TENGs
often
produce
AC
output,
which,
coupled
with
their
high
crest
factor
and
pulsed
output
characteristics,
poses
limitations
on
widespread
adoption
in
real
scenarios.
In
this
paper,
a
multi‐phase
rotating
disk
triboelectric
nanogenerator
(MPRD‐TENG)
characterized
by
low
DC
is
prepared
through
the
method
of
phase
superposition.
The
findings
reveal
that
enhancing
these
parameters,
namely,
increasing
number
TENGs,
augmenting
grids,
elevating
rotational
speed,
MPRD‐TENG
can
be
effectively
reduced.
Furthermore,
innovative
demonstrates
its
versatility
successfully
powering
fire
alarm
system,
thereby
offering
promising
solution
early
warning
monitoring
offshore
oil
exploration
fires.
Ultimately,
implementation
machine
learning
algorithms
to
train
data
collected
significantly
enhances
capability
predict
classify
signals
corresponding
varying
speeds
greater
precision.
Consequently,
integration
methods
not
only
facilitates
more
effective
system
but
also
bolsters
capabilities
unforeseen
situations
encountered
real‐world
engineering
projects.
International Journal of Extreme Manufacturing,
Год журнала:
2024,
Номер
7(1), С. 015505 - 015505
Опубликована: Окт. 18, 2024
Abstract
The
use
of
water
resources
for
energy
generation
has
become
increasingly
prevalent,
encompassing
the
conversion
kinetic
from
streams,
tides,
and
waves
into
renewable
electrical
power.
Water
sources
offer
numerous
benefits,
including
widespread
availability,
stability,
absence
carbon
dioxide
other
greenhouse
gas
emissions,
making
them
a
clean
environmentally
friendly
form
energy.
In
this
work,
we
develop
droplet-based
liquid–solid
triboelectric
nanogenerator
(LS-TENG)
using
sophisticatedly
designed
inflatable
columnar
structures
with
inner
outer
dual-electrodes.
This
device
can
be
utilized
to
harvest
both
internal
droplet-rolling
mechanical
external
droplet-falling
energy,
capable
being
assembled
various
versatile
applications.
design
incorporates
combined
structure
TENG
optimize
output
performance
via
multiple
harvesting
strategies.
features
dual-electrode
columnar-shaped
LS-TENG,
fluid
droplets.
By
leveraging
back-and-forth
motion
small
amount
within
air
column,
readily
collected,
achieving
maximum
mass
power
density
9.02
W·Kg
−1
an
efficiency
10.358%.
component
is
which
utilizes
double-layer
capacitor
switch
effect
elucidated
equivalent
circuit
model.
Remarkably,
without
need
pre-charging,
single
droplet
generate
over
140
V
high
voltage,
7.35
W·m
−2
22.058%.
LS-TENG
sophisticated
simultaneously
collect
types
efficacy,
exhibiting
great
significance
in
potential
applications
such
as
aeration
rollers,
lifejacket,
wind
harvesting,
tents,
green
houses.
