Abstract
Porous
structures
offer
several
key
advantages
in
energy
harvesting,
making
them
highly
effective
for
enhancing
the
performance
of
piezoelectric
and
triboelectric
nanogenerators
(PENG
TENG).
Their
high
surface
area‐to‐volume
ratio
improves
charge
accumulation
electrostatic
induction,
which
are
critical
efficient
conversion.
Additionally,
their
lightweight
flexible
nature
allows
easy
integration
into
wearable
electronics.
These
combined
properties
make
porous
materials
a
powerful
solution
addressing
efficiency
limitations
that
have
traditionally
restricted
nanogenerators.
Recognizing
these
benefits,
this
review
focuses
on
essential
role
play
advancing
PENG
TENG
technologies.
It
examines
wide
range
materials,
including
aerogels,
nano‐porous
films,
sponges,
2D
explaining
how
unique
contribute
to
higher
harvesting
efficiency.
The
also
explores
recent
breakthroughs
development
demonstrating
they
overcome
challenges
open
up
new
possibilities
practical
applications.
advancements
position
as
strong
candidates
use
electronics,
smart
textiles,
Internet
Things
(IoT)
devices.
By
exploring
innovations,
underscores
importance
driving
future
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(14), С. 18075 - 18089
Опубликована: Апрель 1, 2024
Thermally
insulating
materials
from
renewable
and
readily
available
resources
are
in
high
demand
for
ecologically
beneficial
applications.
Cellulose
aerogels
made
lignocellulosic
waste
have
various
advantages.
However,
they
fragile
breakable
when
bent
or
compressed.
In
addition,
cellulose
flammable
weather-sensitive.
Hence,
to
overcome
these
problems,
this
work
included
the
preparation
of
polyurethane
(PU)-based
nanofiber
(CNF)
that
had
flexibility,
flame
retardancy,
thermal
insulation.
Methyl
trimethoxysilane
(MTMS)
water-soluble
ammonium
polyphosphate
(APP)
were
added
improve
cross-linking,
hydrophobicity,
flame-retardant
properties
aerogels.
The
flexibility
chemically
cross-linked
CNF
is
enhanced
through
incorporation
via
wet
coagulating
process.
obtained
during
study
exhibited
low
weight
(density:
35.3–91.96
kg/m3)
together
with
hydrophobic
properties,
decreased
conductivity
(26.7–36.7
mW/m
K
at
25
°C).
Additionally,
comprehensively
examined
underlying
mechanism
was
deduced.
prepared
considered
unique
nanocellulose
aerogel
category
due
their
integrated
structural
performance
benefits.
invention
substantially
contribute
large-scale
manufacture
use
insulation
construction,
automobiles,
aerospace.
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 22, 2024
Abstract
Aerogel
fibers,
known
for
their
lightweight
and
exceptional
thermal
insulation
properties,
provide
an
ideal
material
solution
fabricating
triboelectric
nanogenerators
(TENGs)
self‐powered
wearable
electronics
in
extreme
environments,
such
as
firefighting
gear.
However,
current
aerogel
fibers
face
limitations
due
to
poor
mechanical
properties
lack
of
performance
stability
under
harsh
conditions.
Herein,
a
facile
strategy
preparing
silica/aramid
nanofiber
(ANF)
composite
with
interpenetrated
dual
networks
silica‐dominant
component
(≈64
wt.%)
is
demonstrated;
the
unique
structure
composition
endow
high
tensile
strength
(3.4
MPa),
low
conductivity
(0.033
W
(m·K)
−1
),
large
specific
surface
area
(587
m
2
g
outstanding
fire
resistance
at
95%
porosity,
combining
best
both
ANF
silica
aerogel.
Moreover,
exhibit
excellent
flexibility
extremely
temperatures
(−196
°C)
maintain
structural
integrity
even
when
exposed
flame
up
5
min.
Leveraging
these
fiber‐based
TENGs
show
electrical
output
before
after
combustion
(>94%
retention).
The
fabrication
offers
promising
opportunities
modulating
functionalities
on
demand,
holding
great
potential
future
applications
smart
protective
fabrics
environments.
Polymers,
Год журнала:
2023,
Номер
15(22), С. 4383 - 4383
Опубликована: Ноя. 11, 2023
Since
the
invention
of
triboelectric
nanogenerator
(TENG),
porous
polymer
materials
(PPMs),
with
different
geometries
and
topologies,
have
been
utilized
to
enhance
output
performance
expand
functionality
TENGs.
In
this
review,
basic
characteristics
preparation
methods
various
PPMs
are
introduced,
along
their
applications
in
TENGs
on
basis
roles
as
electrodes,
surfaces,
structural
materials.
According
pore
size
dimensionality,
types
that
built
hydrogels,
aerogels,
foams,
fibrous
media
classified
advantages
disadvantages
analyzed.
To
deepen
understanding
future
development
trend,
intelligent
multifunctional
human–machine
interfaces,
smart
wearable
devices,
self-powering
sensors
introduced.
Finally,
directions
challenges
explored
provide
possible
guidance
TENG-based
devices
systems.
Advanced Functional Materials,
Год журнала:
2024,
Номер
34(19)
Опубликована: Янв. 17, 2024
Abstract
Developing
energy
harvesting
devices
is
crucial
to
mitigate
the
dependence
on
conventional
and
rigid
batteries
in
wearable
electronics,
ensuring
their
autonomous
operation.
Nanogenerators
offer
a
cost‐effective
solution
for
enabling
continuous
operation
of
electronics.
Herein,
this
study
proposes
novel
strategy
that
combines
freeze‐casting,
freeze‐drying,
printing
technologies
fabricate
fully
printed
triboelectric
nanogenerator
(TENG)
based
polyvinylidene
fluorid‐etrifluoroethylene
P(VDF‐TrFE)
porous
aerogel.
First,
effects
porosity
poling
stretchability
capabilities
are
investigated,
conducting
comprehensive
analysis
structure's
impact
mechanical,
ferroelectric,
properties
compared
solid
films.
The
results
demonstrate
structural
modification
significantly
enhances
increasing
it
from
7.7%
(solid)
66.4%
(porous).
This
output
voltage
by
66%
generated
charges
48%
non‐poled
aerogel
films
counterparts.
Then,
TENG
demonstrated
using
stretchable
materials,
exhibiting
peak
power
62.8
mW
m
−2
an
average
9.9
over
100
tapping
cycles
at
0.75
Hz.
It
can
illuminate
light‐emitting
diodes
(LEDs)
through
mechanical
human
motion.
provides
significant
advance
development
devices.
Abstract
The
world's
population
is
growing,
leading
to
an
increasing
demand
for
freshwater
resources
drinking,
sanitation,
agriculture,
and
industry.
Interfacial
solar
steam
generation
(ISSG)
can
solve
many
problems,
such
as
mitigating
the
power
crisis,
minimizing
water
pollution,
improving
purification
desalination
of
seawater,
rivers/lakes,
wastewater.
Cellulosic
materials
are
a
viable
ecologically
sound
technique
capturing
energy
that
adaptable
range
applications.
This
review
paper
aims
provide
overview
current
advancements
in
field
cellulose‐based
ISSG
devices,
specifically
focusing
on
their
applications
desalination.
examines
system
evaluates
effectiveness
various
cellulosic
materials,
cellulose
nanofibers
derived
from
different
sources,
carbonized
wood
two‐dimensional
(2D)
3D
cellulosic‐based
well
advanced
including
bacterial
membranes
obtained
agricultural
industrial
wastes.
focus
exploring
potential
these
devices
desalination,
purification,
treatment.
function,
advantages,
disadvantages
performance
were
also
deliberated
throughout
our
discussion.
In
addition,
suggested
methods
enhancing
utilization
systems
treatment
emphasized.
Abstract
Benefiting
from
the
high
sensitivity
and
electromechanical
conversion
efficiency,
triboelectric
nanogenerators
(TENGs)
are
widely
used
in
various
fields
of
self‐powered
sensing
mechanical
energy
harvesting,
which
have
great
potential
for
application
future
smart
Internet
Things.
The
development
sustainable
materials
with
high‐performance
has
a
vital
impact
on
construction
TENG
devices
that
combine
high‐output
performance
environmental
friendliness,
positive
humanity.
This
review
systematically
comprehensively
summarizes
latest
research
work
TENG's
materials.
First,
an
overall
overview
is
provided
based
composition
materials,
including
amino
acids,
polysaccharides,
synthetic
polymer,
representative
works
further
classified
summarized
detail.
In
addition,
progress
harvesting
applications
also
summarized.
Finally,
overviews
challenges
current
material,
related
outlooks
offered
corresponding
strategies
directions
this
field
future.
