ACS Applied Electronic Materials,
Год журнала:
2024,
Номер
6(11), С. 8163 - 8170
Опубликована: Окт. 15, 2024
Reversible
electrodeposition
and
dissolution
of
manganese
dioxide
(MnO2)
on
transparent
conducting
substrates
offer
a
promising
strategy
for
light
modulation
in
electrochromic
(EC)
smart
windows
but
are
limited
by
slow
kinetics
reversibility.
Increasing
electrolyte
acidity
speeds
dissolution,
yet
reversibility
remains
constrained
even
with
up
to
1
M
sulfuric
acid.
Notably,
adding
10
mM
Fe2+
less
acidic
50
H2SO4
markedly
improves
the
speed
MnO2/Mn2+
redox
reaction.
The
enhancement
is
due
reduced
accelerating
during
coloration,
while
aids
MnOOH
intermediate
bleaching.
setup
achieves
99%
transmittance
contrast
at
shorter
wavelengths
within
25
s
stable
over
500
cycles.
Additionally,
tandem
EC
device
integrating
Zn2+/Zn
reactions
offers
selective
or
full-spectrum
blocking,
delivering
95%
fast
switching.
This
research
provides
critical
insights
developing
advanced
windows.
ACS Applied Materials & Interfaces,
Год журнала:
2024,
Номер
16(32), С. 42502 - 42512
Опубликована: Авг. 3, 2024
Vanadium
pentoxide
(V2O5)
is
considered
a
promising
material
for
electrochromic
supercapacitors
due
to
its
rich
color
transitions
and
excellent
electrochemical
capacity.
However,
V2O5
exhibits
low
electrical
conductivity,
volume
changes
dramatically
during
charge–discharge
cycles,
leading
structural
collapse
poor
long-term
cyclability.
These
issues
have
hindered
the
development
application
of
V2O5.
In
this
study,
copper
vanadium
oxide
yolk–shell
microspheres
(CVO)
were
synthesized
through
one-step
solvent
heat
treatment
with
an
annealing
process.
With
doping
element,
capacitance,
cyclic
stability
CVO
significantly
enhanced.
Subsequently,
sphere-wire
network
structure
was
formed
by
blending
Na2V6O16·3H2O
nanowires
(NVO),
resulting
in
formation
CVO/NVO
composites.
The
three-dimensional
efficiently
facilitates
acquisition
additional
redox
sites
strengthens
material-to-substrate
bonding.
Under
combined
influence
these
favorable
factors,
achieved
high
specific
capacitance
39.2
mF
cm–2,
retention
84%
after
7500
cycles
at
current
density
0.7
mA
cm–2.
fully
inorganic
solid-state
supercapacitor
(ECSC),
assembled
on
basis
CVO/NVO,
demonstrates
vivid
clearly
distinguishable
change
(ΔE*
=
37).
Even
more
impressive
energy
storage
capacity
(18.4
mF·cm–2)
cycling
(up
89%
10,000
cycles)
exhibited
devices.
key
performances
are
superior
those
most
previously
reported
V2O5-based
ECSCs,
opening
avenue
Journal of Materials Chemistry C,
Год журнала:
2024,
Номер
12(39), С. 15833 - 15854
Опубликована: Янв. 1, 2024
Herein,
we
consider
the
influence
of
organic
groups
on
material
properties,
take
tungsten
oxide
as
an
example
to
introduce
mechanism
change
process
in
detail,
and
verify
theoretical
development
with
example.
ACS Applied Polymer Materials,
Год журнала:
2024,
Номер
6(12), С. 7161 - 7170
Опубликована: Июнь 12, 2024
Cross-linked
conjugated
polymers
show
many
unique
performance
advantages
in
ionic
transport,
stretchability,
and
cycle
stability.
However,
the
relationship
between
cross-link
density
is
always
ignored
designing
cross-linked
polymers.
Here,
a
series
of
poly(3,4-ethylenedioxythiophene)
(PEDOT)
derivatives
with
different
densities
were
prepared
by
two
steps:
(1)
free
radical
polymerization
flexible
side
chain
(methacrylate);
(2)
electrochemical
copolymerization
units
(thiophene
derivatives).
These
copolymers
except
for
poly(2,1)
high
exhibit
similar
optical
absorption
region
definite
peak,
indicating
that
low
has
little
influence
on
region.
Electrochromic
results
indicate
poly(1,10)
possesses
higher
contrast
(70%)
faster
response
time
(0.5
s)
than
linear
poly(ProDOT-Me)
other
relatively
density.
When
beyond
critical
value,
it
could
be
also
found
electrochromic
properties
decrease
gradually
as
increases.
And
device
(10
cm
×
6
cm)
based
was
constructed,
whose
color
reversibly
turn
purple
transmissive
blue.
demonstrate
controlling
essential
materials.
Journal of Materials Chemistry C,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 1, 2025
Electrochromic
device
based
Fe
n
+
and
a
leuco
dye
has
been
fabricated,
which
shows
satisfying
cycle
life
optical
modulate
ability.
This
strategy
to
improve
may
accelerate
the
application
of
electrochromic
devices.
Advanced Optical Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 13, 2025
Abstract
Smart
windows
are
promising
to
promote
building
energy
efficiency.
Bio‐inspired
smart
expected
fulfill
the
independent
energy‐saving
and
on‐demand
privacy
modes
simultaneously,
while
further
improvement
is
necessary.
Here,
an
improved
composite
based
on
tungsten‐doped
vanadium
dioxides
(W‐VO
2
),
silica
(SiO
)
nanospheres,
polydimethylsiloxane
(PDMS)
elastomers
reported.
It
found
that
can
simultaneously
under
a
low
temperature
of
≈45
°C.
More
importantly,
surface
morphology
effects
investigated
optical
wettability
modulation
provide
insight
into
SiO
‐based
wrinkle
formation
mechanisms.
demonstrated
wrinkles
more
effective
than
cracks
in
achieving
mode,
indicated
by
diffraction
patterns.
Increasing
also
causes
change
from
hydrophilic
hydrophobic
properties
accompanied
contact
angle
19°
115°,
suggesting
potential
for
self‐cleaning
functionality.
SiO₂
spheres
essential
forming
wrinkles:
small
gaps
between
nearby
localized
strain
increase
overall
Young's
modulus,
resulting
larger
amplitude.
Combining
method
understanding,
this
work
support
future
developments
mechano‐/thermos‐chromic
materials,
windows,
bioinspired
materials
designs.
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 5, 2025
Abstract
Conventional
wearable
devices
mainly
focus
on
physiological
signal
sensing,
lack
feedback
for
information,
and
rely
bulky
display
devices.
Moreover,
the
external
wired
transmission
in
traditional
detection
severely
limits
practical
application.
Herein,
inspired
by
“one‐stone‐two‐birds”
ability
of
chameleon
to
sense
stimuli
change
their
colors,
a
visual
pressure‐sensing
integrated
hybrid
device
based
iontronic
sensing
electrochromic
is
proposed,
which
structure
simplified
sharing
electrodes
color‐changing
layers
instead
two
electrodes.
The
photocuring
process
preparation
process,
with
its
unit
exhibiting
sensitivity
358.1
kPa⁻¹
response/recovery
time
16.8/28.0
ms,
having
colored/bleached
4.2/4.8
s.
Utilizing
excellent
performance,
applications
like
quick
response
code
encryption
under
alternating
potential,
info
hiding/display
pressure
perception,
monitoring
are
explored
validated.
In
addition,
smart
wireless
wristband
system
designed
that
monitors
signals
real
via
Bluetooth
shows
different
motion
states.
It
envisioned
these
strategies
will
have
great
potential
intelligence
encryption,
interactive
communication,
medical
monitoring.
Advanced Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 8, 2025
Abstract
Electrochromic
smart
windows
with
dynamic
photothermal
management
can
enhance
living
comfort
and
reduce
building
energy
consumption.
However,
they
usually
suffer
from
low
selectivity
optical
modulation
in
visible
(VIS)
near‐infrared
(NIR)
regions
owing
to
the
coupled
mechanism
restriction.
Here,
reversible
deposition
ion
adsorption
WO
3
//MnO
2
‐based
are
decoupled
using
a
hybrid
electrolyte,
realizing
their
independent
efficient
VIS–NIR
regulation.
The
Cu
2+
/Mn
ions
electrolyte
proton
on
surface
while
impeding
insertion,
imparting
state‐of‐the‐art
NIR
regulation
electrode.
Moreover,
synergy
of
protons
facilitates
MnO
electrodeposition
electrode,
triggering
tuning
VIS
light
an
94%.
outdoor
test
simulation
reveal
that
window
achieves
cooling
at
5–10
°C,
savings
73.2
MJ
m
−2
reduction
14.4
kg
CO
emissions
per
square
meter
annually.
This
work
would
contribute
energy‐saving
emission‐reduction
solutions
widespread
applications.
