Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 23, 2024
Abstract
Traditional
triboelectric
nanogenerators
(TENGs)
face
significant
challenges
related
to
low
charge
density
and
high
internal
impedance.
Many
methods
have
been
proposed
enhance
the
surface
of
TENGs,
yet
they
do
not
simultaneously
achieve
resistance.
Here,
a
switch‐shuttling
nanogenerator
(SS‐TENG)
is
proposed.
By
periodically
interrupting
circuit
during
intrinsic
capacitance
variation
TENG
shuttle
process,
SS‐TENG
alters
potential
difference
while
maintaining
constant
in
capacitor,
thereby
enhancing
energy
storage
improving
overall
output
performance.
The
rapid
activation
switch
significantly
reduces
Compared
traditional
transfer
amount
increases
by
1.9
times,
short‐circuit
current
rises
9.6
with
resistance
reduced
factor
20.
Furthermore,
prototype
novel
cylindrical‐hexagram
bluff
body
(CHB)
vortex‐induced
vibration
harvester
based
on
designed
tested,
demonstrating
its
ability
reliably
harvest
from
underwater
tidal
flows
wave
energy.
Additionally,
self‐powered
marine
pollution
detection
strategy
has
developed
using
SS‐TENG.
This
work
provides
valuable
insights
for
performance
TENGs
actively
promotes
their
commercialization.
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 Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 21, 2025
Abstract
Triboelectric
nanogenerators
(TENGs)
have
gained
significant
attention
for
ability
to
convert
mechanical
energy
into
electrical
energy.
As
the
applications
of
TENG
devices
expand,
their
safety
and
reliability
becomes
priority,
particularly
where
there
is
risk
fire
or
spontaneous
combustion.
Flame‐retardant
materials
can
be
employed
address
these
concerns
without
compromising
performance
efficiency
TENGs.
The
primary
focus
this
review
on
flame‐retardant
materials,
including
polymers,
biomaterials,
liquid
aerogels,
carbon‐based
materials.
fundamental
properties
are
elucidated.
characteristics
each
material
type
described,
along
with
potential
boost
importance
flame
retardancy
in
advancing
technology
projected
from
its
usage
wearable
electronics,
self‐powered
sensors,
smart
textiles.
Current
challenges
such
as
compatibility,
fabrication
complexity,
environmental
addressed,
proposed
strategies
overcoming
them.
This
underscores
significance
strengthening
functionality
devices,
paving
way
widespread
adoption
across
various
industries.
Underwater
ultrasonic
detection
is
critical
for
marine
security,
playing
a
vital
role
in
resource
development,
environmental
protection,
and
national
defense.
However,
existing
systems,
which
primarily
rely
on
active
scanning
technologies,
are
hindered
by
high
costs,
significant
energy
demands,
challenges
achieving
large-scale
deployment.
Here,
we
introduce
microfiber-based
triboelectric
acoustic
sensor
(MTAS)
featuring
core-shell
hierarchical
structure,
offering
self-powered
solution
precise
measurement
of
underwater
ultrasound
source
distance.
By
leveraging
the
principles
contact
electrification/triboelectrification
electrostatic
induction,
MTAS
efficiently
converts
complex
vibrations
into
real-time
electrical
signals.
The
demonstrates
rapid
response
times
as
low
8.6
μs,
signal-to-noise
ratio
29.8
dB,
capability
to
detect
sources
with
power
levels
above
1.6
W
via
time-difference-of-arrival
analysis.
To
address
sea
applications,
further
propose
distributed
network
that
integrates
multiple
units
capable
localization
motion
trajectory
visualization.
This
innovation
represents
transformative
approach,
combining
operation,
ease
deployment,
imperceptibility,
paving
way
large-area,
energy-efficient
submarine
security
systems.
Such
advancements
redefine
paradigm
target
detection,
aligning
technological
pressing
demands
safety
sustainability.
Advanced Energy Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 26, 2024
Abstract
With
the
development
of
smart
grids,
efficient
condition
monitoring
high
voltage
transmission
system
has
become
crucial,
necessitating
reliable
power
supplies
for
distributed
sensors.
Traditional
energy
harvesters
often
focus
on
either
internal
or
external
sources,
limiting
overall
efficiency.
This
study
introduces
a
triboelectric‐electromagnetic‐electric
field
hybrid
harvester
(TEE‐HEH)
that
synergistically
integrates
triboelectric
nanogenerators
(TENGs),
electromagnetic
generators
(EMGs),
and
electric
(EEHs)
to
simultaneously
capture
wind
energy.
Electric
is
harvested
via
displacement
currents
between
lines
ground,
while
TENGs
EMGs
efficiently
low‐
high‐speed
energy,
respectively,
enabling
broadband
harvesting
(2.3–10
m
s
−1
).
The
synergistic
combination
TENG,
EMG,
EEH
within
TEE‐HEH
leads
significantly
enhanced
efficiency
from
multiple
sources.
At
speed
5
,
line
25
kV,
distance
1.5
m,
achieved
peak
outputs
18.5
mW
(TENG),
262
(EMG),
1.85
(EEH),
demonstrating
collection
An
environmental
been
powered,
TEE‐HEH's
practicality
dual‐source
in
grid
applications.
