Journal of Industrial Textiles,
Journal Year:
2024,
Volume and Issue:
54
Published: Jan. 1, 2024
Piezoelectric
materials
have
garnered
significant
interest
owing
to
width
range
of
applications
in
sensing
and
energy
harvesting
by
converting
environmental
mechanical
electricity.
Improving
the
performance
piezoelectric
nanogenerators
(PENGs)
is
an
important
challenge
develop
these
devices.
Herein,
a
novel
method
was
used
enhance
piezoelectricity
PENGs
based
on
PVDF
NFs
(polyvinylidene
fluoride
nanofibers)
BaTiO3
NPs
(barium
titanate
nanoparticles)
simultaneously
electrospinning
electrospraying
NPs.
Two
set
nanogenerator
devices
were
prepared
which
differ
layer
arrangements
volume
fraction
piezopolymer
piezoceramic
parts.
Results
showed
that,
case
(E/E),
increase
phase
content
voltage
output
has
been
observed
comparison
with
arrangement.
The
improved
piezoelctric
performace
may
result
from
better
dipole
alignment
facilitated
more
intense
electric
field
during
E/E
process,
along
heightened
interactions
between
two
arising
enhanced
contact
multilayer
configuration.
Moreover,
optimum
ratio
obtain
maximum
1.5
0.5.
Therefore,
effectively
without
having
common
challenges
process
nanocomposites,
as
well
decreasing
total
preparation
time
simplifies
processing
steps.
Having
such
features,
leads
hold
great
appeal
for
diverse
applications.
Nanoscale Advances,
Journal Year:
2022,
Volume and Issue:
4(21), P. 4658 - 4668
Published: Jan. 1, 2022
Mechanical
energy
harvesting
using
piezoelectric
nanogenerators
(PNGs)
offers
an
attractive
solution
for
driving
low-power
portable
devices
and
self-powered
electronic
systems.
Here,
we
designed
eco-friendly
flexible
piezocomposite
nanogenerator
(c-PNG)
based
on
H2(Zr0.1Ti0.9)3O7
nanowires
(HZTO-nw)
Ba0.85Ca0.15Zr0.10Ti0.90O3
multipods
(BCZT-mp)
as
fillers
polylactic
acid
(PLA)
a
biodegradable
polymer
matrix.
The
effects
of
the
applied
stress
amplitude,
frequency
pressing
duration
electric
outputs
in
device
were
investigated
by
simultaneous
recording
mechanical
input
electrical
outputs.
fabricated
c-PNG
shows
maximum
output
voltage,
current
volumetric
power
density
11.5
V,
0.6
μA
9.2
mW
cm-3,
respectively,
under
cyclic
finger
imparting.
A
high-pressure
sensitivity
0.86
V
kPa-1
(equivalent
to
3.6
N-1)
fast
response
time
45
ms
obtained
dynamic
pressure
sensing.
Besides
this,
demonstrates
high-stability
durability
around
three
months,
can
drive
commercial
electronics
(charging
capacitor,
glowing
light-emitting
diodes
powering
calculator).
Multi-physics
simulations
indicate
that
presence
BCZT-mp
is
crucial
enhancing
c-PNG.
Accordingly,
this
work
reveals
combining
1D
3D
composite-based
PNG
could
be
beneficial
improving
performances
application
skin
wearable
devices.
Advanced Materials Technologies,
Journal Year:
2024,
Volume and Issue:
9(13)
Published: April 8, 2024
Abstract
Flexible
force
sensors
show
great
potential
applications
in
smart
wearable
devices
based
on
their
softness
and
ease
of
deformation.
Textiles
are
extremely
compatible
with
the
human
body,
where
mechanical
forces
generated
by
movements
physiological
activities
create
rich
application
scenarios
for
flexible
sensors.
Currently,
bottleneck
development
depends
breakthrough
mass
production
efficiency,
which
has
been
a
research
focus
recent
years
to
accelerate
textiles
various
fields.
This
work
reviews
progress
fiber
assemblies
is
discussed
four
aspects:
sensing
mechanisms,
structure
design,
preparation
methods,
application.
Finally,
challenges
faced
analyzed
summarized,
few
inspirations
future
direction
provided.
Polymers,
Journal Year:
2024,
Volume and Issue:
16(17), P. 2477 - 2477
Published: Aug. 30, 2024
Mechanical
energy
harvesters
made
from
soft
and
flexible
materials
can
be
employed
as
sources
for
wearable
implantable
devices.
However,
considering
how
human
organs
joints
expand
bend
in
many
directions,
the
generated
response
to
a
mechanical
stimulus
only
one
direction
limits
applicability
of
harvesters.
Here,
we
report
carbon
nanotube
(CNT)
sheets/an
elastomer
bilayer
harvesting
electrode
(CBHE)
that
converts
two-axis
stimulation
into
electrical
energy.
The
novel
microwinkled
structure
CBHE
successfully
demonstrates
an
electrochemical
double-layer
(EDL)
capacitance
change
biaxial
stimulation,
thereby
generating
power
(0.11
W
kg−1).
Additionally,
low
modulus
(0.16
MPa)
high
deformability
due
elastomeric
substrate
suggest
applied
body.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Nov. 17, 2024
Abstract
Flexibility,
higher
piezoelectric
performance,
and
long‐lasting
stability
of
devices
have
a
great
demand
in
next
generation
energy
technologies.
Polyvinylidene
fluoride
(PVDF)
polymer
has
greater
mechanical
flexibility,
but
it
suffers
from
low
performance.
Herein,
sandwich‐structured
film
(SS‐PF)
is
designed
by
inserting
the
conductive
poly(3,4‐ethylenedioxythiophene)
polystyrene
sulfonate
(PEDOT:PSS)
layer
between
two
PVDF
layers.
The
SS‐PF
based
flexible
harvester
(f‐PEH)
generates
voltage
current
3.73
times
4.64
than
pristine
type
f‐PEH.
Moreover,
f‐PEH
shows
no
degradation
output
confirming
excellent
over
6
months.
DFT
simulation
occurrence
intermolecular
forces
PVDF/PEDOT:PSS
interface.
electric
field‐dependent
charges
alignment
PEDOT:PSS
may
induce
charge
accumulation
at
PSS‐PVDF
interface
depletion
PEDOT‐PVDF
leading
to
change
orientation
molecular
structure
PVDF.
Next,
tested
for
vibration
sensor
monitor
vibrations
curvy
pipes
machines,
its
voltages
are
comparable
with
commercial
confirm
real‐time
use.
results
present
novel
design
strategy,
indicating
new
direction
investigating
piezo‐polymer‐based
Journal of Industrial Textiles,
Journal Year:
2024,
Volume and Issue:
54
Published: Jan. 1, 2024
Piezoelectric
materials
have
garnered
significant
interest
owing
to
width
range
of
applications
in
sensing
and
energy
harvesting
by
converting
environmental
mechanical
electricity.
Improving
the
performance
piezoelectric
nanogenerators
(PENGs)
is
an
important
challenge
develop
these
devices.
Herein,
a
novel
method
was
used
enhance
piezoelectricity
PENGs
based
on
PVDF
NFs
(polyvinylidene
fluoride
nanofibers)
BaTiO3
NPs
(barium
titanate
nanoparticles)
simultaneously
electrospinning
electrospraying
NPs.
Two
set
nanogenerator
devices
were
prepared
which
differ
layer
arrangements
volume
fraction
piezopolymer
piezoceramic
parts.
Results
showed
that,
case
(E/E),
increase
phase
content
voltage
output
has
been
observed
comparison
with
arrangement.
The
improved
piezoelctric
performace
may
result
from
better
dipole
alignment
facilitated
more
intense
electric
field
during
E/E
process,
along
heightened
interactions
between
two
arising
enhanced
contact
multilayer
configuration.
Moreover,
optimum
ratio
obtain
maximum
1.5
0.5.
Therefore,
effectively
without
having
common
challenges
process
nanocomposites,
as
well
decreasing
total
preparation
time
simplifies
processing
steps.
Having
such
features,
leads
hold
great
appeal
for
diverse
applications.
