Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 25, 2025
Abstract
Polyimide
aerogel
(PIA)
can
enable
to
withstand
the
extreme
conditions
in
a
great
measure
due
their
exceptional
thermal
stability
and
excellent
mechanical
toughness
properties
derived
from
rigid‐ring
structures,
which
are
rather
promising
alternatives
terms
of
high‐performance
protection
materials
for
aerospace
field.
However,
PIA
usually
suffers
poor
dimensional
at
high‐temperature
atmosphere,
accordingly
leading
into
degradation
macroscopic
features,
eventually
restricting
extreme‐ambient
applications.
Here,
an
situ
skeleton
encapsulation
growth
strategy
is
proposed
modulate
networking
construction
pattern,
namely
forming
binary
organic–inorganic
nature
skeletons
originated
nanoscale
structures
encapsulated
with
polymethylsilsesquioxane.
The
resulting
demonstrates
superior
(linear
shrinkage
down
1.11%
even
experiencing
300
°C
3000
s)
despite
facing
heat
flux
shock,
suggesting
resistant
ability
depending
upon
Si‐O‐phase‐layer
formation
intrinsic
strong
chemical
bonds
polyimide
chains.
Further,
aerogels
own
extreme‐condition
tolerance
when
subjected
shock
cycling
(−196
°C—300
°C),
fantastic
flame
retardancy
1200
°C.
This
approach
developing
broadens
applicability
holds
significant
potential
protection,
particularly
conditions.
Advanced Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Ноя. 3, 2024
Abstract
Bacterial
cellulose
(BC)
is
produced
via
the
fermentation
of
various
microorganisms.
It
has
an
interconnected
3D
porous
network
structure,
strong
water‐locking
ability,
high
mechanical
strength,
chemical
stability,
anti‐shrinkage
properties,
renewability,
biodegradability,
and
a
low
cost.
BC‐based
materials
their
derivatives
have
been
utilized
to
fabricate
advanced
functional
for
electrochemical
energy
storage
devices
flexible
electronics.
This
review
summarizes
recent
progress
in
development
BC‐related
devices.
The
origin,
components,
microstructure
BC
are
discussed,
followed
by
advantages
using
applications.
Then,
material
design
strategies
terms
solid
electrolytes,
binders,
separators,
as
well
BC‐derived
carbon
nanofibers
electroactive
discussed.
Finally,
short
conclusion
outlook
regarding
current
challenges
future
research
opportunities
related
next‐generation
suggestions
proposed.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 25, 2025
Abstract
Polyimide
aerogel
(PIA)
can
enable
to
withstand
the
extreme
conditions
in
a
great
measure
due
their
exceptional
thermal
stability
and
excellent
mechanical
toughness
properties
derived
from
rigid‐ring
structures,
which
are
rather
promising
alternatives
terms
of
high‐performance
protection
materials
for
aerospace
field.
However,
PIA
usually
suffers
poor
dimensional
at
high‐temperature
atmosphere,
accordingly
leading
into
degradation
macroscopic
features,
eventually
restricting
extreme‐ambient
applications.
Here,
an
situ
skeleton
encapsulation
growth
strategy
is
proposed
modulate
networking
construction
pattern,
namely
forming
binary
organic–inorganic
nature
skeletons
originated
nanoscale
structures
encapsulated
with
polymethylsilsesquioxane.
The
resulting
demonstrates
superior
(linear
shrinkage
down
1.11%
even
experiencing
300
°C
3000
s)
despite
facing
heat
flux
shock,
suggesting
resistant
ability
depending
upon
Si‐O‐phase‐layer
formation
intrinsic
strong
chemical
bonds
polyimide
chains.
Further,
aerogels
own
extreme‐condition
tolerance
when
subjected
shock
cycling
(−196
°C—300
°C),
fantastic
flame
retardancy
1200
°C.
This
approach
developing
broadens
applicability
holds
significant
potential
protection,
particularly
conditions.
