Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(29)
Published: March 17, 2024
Abstract
Biodegradable
polymers
(BPs)‐based
triboelectric
nanogenerators
(TENGs)
have
advantages,
including
biocompatibility
and
biodegradability.
However,
biodegradable
TENGs
(BD‐TENGs)
possess
relatively
low
output
performance,
limiting
their
application
due
to
the
small
differences
in
polarities
for
most
BPs.
Molecular
doping
is
a
simple
effective
method
altering
polarity
of
materials
improving
performance
BD‐TENGs.
there
lack
laws
mechanism
about
different
doped
molecules,
especially
molecules
with
biodegradability
biocompatibility.
Here,
kinds
are
selected
tribopositive
tribonegative
materials,
respectively,
related
researched.
In
particular,
BD‐TENG
improved
several
times
by
amounts
poly
(propylene
glycol)
(PPG)
ethyl
cellulose
(EC),
enhanced
resolution
abnormal
respiratory
signal
monitoring.
This
work
not
only
provides
theoretical
guidance
selection
but
also
conducts
in‐depth
research
molecular‐level
mechanisms.
ACS Applied Electronic Materials,
Journal Year:
2024,
Volume and Issue:
6(2), P. 887 - 900
Published: Jan. 25, 2024
Triboelectric
nanogenerators
(TENG)
based
on
natural
biomaterials
are
essential
for
energy-harvesting
applications.
In
this
work,
an
efficient
approach
was
proposed
to
enhance
the
electrical
performance
of
chitosan
(CS),
which
is
a
naturally
occurring
biopolymer
with
incorporation
polyethylenimine-grafted
graphene
oxide
(PEI-GO)
nanoparticles.
properties
different
weight
combinations
PEI-GO
in
CS
were
tested
against
polytetrafluoroethylene
(PTFE).
An
improvement
mechanical
and
nanocomposites
observed
comparison
pure
chitosan.
Thus,
composite
10
wt
%
used
as
positive
layer
TENG
device,
open-circuit
voltage
(Voc)
∼222
V,
short
circuit
current
(Isc)
∼6.6
μA,
transfer
charge
(Qsc)
∼149.6
nC
observed.
Almost
5.5
fold
increase
output
power
(∼1465.2
μW)
its
density
(∼407
mW/m2)
seen
nanocomposite
that
CS.
The
able
calculators
wristwatches
light
up
126
blue
light-emitting
diodes
(LEDs).
Further,
fabricated
same
polymer
(CS
nanocomposite)
tribo-layers,
where
acts
tribo-negative
PEI-GO-incorporated
tribo-positive
polymer-based
TENG.
device
found
14
white
LEDs
human
hand
tapping.
This
study
thus
presents
opportunities
utilizing
biomechanical
energy
everyday
life
bioelectronics
bioderived
materials.
InfoMat,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 27, 2025
Abstract
Triboelectric
nanogenerators
(TENGs)
as
a
clean
energy‐harvesting
technology
are
experiencing
significant
growth
in
the
pursuit
of
carbon
neutrality,
accompanied
by
increasing
use
environmentally
friendly
biomaterials.
However,
biomaterials
exhibit
inferior
triboelectric
properties
compared
with
petro‐materials,
hindering
development
bio‐based
TENGs.
Here,
leveraging
crystal
boundary‐tuning
strategy,
we
develop
chitosan
aerogel‐based
TENG
(CS‐TENG)
that
is
capable
delivering
power
density
over
116
W
m
–
2
,
beyond
previous
reports
for
CS‐TENG
an
order
magnitude.
With
high
output
voltage
3200
V,
directly
illuminated
1000
LEDs
series.
Notably,
CS
aerogel
exhibits
self‐healing,
waste
recycling
and
gas‐sensitive
properties,
ensuring
long‐term
durability,
environmental
benignity
sensing
characteristics
CS‐TENG.
Furthermore,
breath‐activated
mask‐integrated
ammonia
monitoring
system
engineered,
which
accurately
detects
changes
concentration
within
range
10–160
ppm,
enabling
real‐time
environment.
Our
results
set
record
ultrahigh
CS‐TENG,
representing
advancement
practical
application
image
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Oct. 30, 2024
Abstract
The
past
decade
has
witnessed
remarkable
progress
in
high‐performance
Triboelectric
nanogenerators
(TENG)
with
the
design
and
synthesis
of
functional
dielectric
materials,
exploration
novel
dynamic
charge
transport
mechanisms,
innovative
architecture,
making
it
one
most
crucial
technologies
for
energy
harvesting.
High
output
density
is
fundamental
TENG
to
expand
its
application
scope
accelerate
industrialization;
depends
on
equilibrium
generation,
trapping,
de‐trapping,
migration
within
core
components.
Here,
this
review
classifies
summarizes
approaches
enhance
collection
layers.
milestone
high
reviewed
based
material
selection
mechanisms.
state‐of‐the‐art
principles
techniques
generating
suppressing
decay
are
discussed
highlighted
detail,
distinct
advanced
materials
preparation,
effective
excitation
strategy
emphatically
introduced.
Lastly,
bottleneck
future
research
priorities
boosting
summarized.
A
summary
these
cutting‐edge
developments
intends
provide
readers
a
deep
understanding
high‐output
TENG.