Next Energy,
Journal Year:
2024,
Volume and Issue:
3, P. 100121 - 100121
Published: April 1, 2024
Passive
daytime
radiative
cooling
has
emerged
as
a
promising
sustainable
technique
for
meeting
ever-growing
demand
across
multiple
sectors.
Although
number
of
review
articles
have
reported
fundamental
mechanisms
and
materials
developments
cooling,
reviews
on
its
current
potential
applications
been
limited
to
specific
scenarios
such
building
energy
saving.
Thus,
the
best
our
knowledge,
here
we
summarize
discuss
comprehensive
list
most
passive
broaden
horizons
in
this
technology.
First,
from
perspective,
briefly
approaches
creating
high
solar
reflectance
emissivity
atmospheric
window
8–13
µm.
We
then
present
five
major
categories,
each
with
several
sub-categories,
discus
application
selective
articles.
Based
availability
real-world
demonstrations
commercialization,
qualitatively
assess
technology
readiness
levels
these
applications,
highlighting
future
directions
that
need
more
attention.
This
offers
one-stop
access
summary
along
recent
progress
opportunities.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
unknown
Published: March 18, 2024
Abstract
Radiative
cooling
(RC)
is
a
carbon‐neutral
technology
that
utilizes
thermal
radiation
to
dissipate
heat
from
the
Earth's
surface
cold
outer
space.
Research
in
field
of
RC
has
garnered
increasing
interest
both
academia
and
industry
due
its
potential
drive
sustainable
economic
environmental
benefits
human
society
by
reducing
energy
consumption
greenhouse
gas
emissions
conventional
systems.
Materials
innovation
key
fully
exploit
RC.
This
review
aims
elucidate
materials
development
with
focus
on
design
strategy
including
their
intrinsic
properties,
structural
formations,
performance
improvement.
The
main
types
materials,
i.e.,
static‐homogeneous,
static‐composite,
dynamic,
multifunctional
are
systematically
overviewed.
Future
trends,
possible
challenges,
solutions
presented
perspectives
concluding
part,
aiming
provide
roadmap
for
future
advanced
materials.
Science,
Journal Year:
2024,
Volume and Issue:
384(6701), P. 1203 - 1212
Published: June 13, 2024
Radiative
cooling
textiles
hold
promise
for
achieving
personal
thermal
comfort
under
increasing
global
temperature.
However,
urban
areas
have
heat
island
effects
that
largely
diminish
the
effectiveness
of
as
wearable
fabrics
because
they
absorb
emitted
radiation
from
ground
and
nearby
buildings.
We
developed
a
mid-infrared
spectrally
selective
hierarchical
fabric
(SSHF)
with
emissivity
greatly
dominant
in
atmospheric
transmission
window
through
molecular
design,
minimizing
net
gain
surroundings.
The
SSHF
features
high
solar
spectrum
reflectivity
0.97
owing
to
strong
Mie
scattering
nano-micro
hybrid
fibrous
structure.
is
2.3°C
cooler
than
solar-reflecting
broadband
emitter
when
placed
vertically
simulated
outdoor
scenarios
during
day
also
has
excellent
properties.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(31)
Published: May 29, 2024
The
development
of
scalable
and
passive
coatings
that
can
adapt
to
seasonal
temperature
changes
while
maintaining
superhydrophobic
self-cleaning
functions
is
crucial
for
their
practical
applications.
However,
the
incorporation
cooling
heating
with
conflicting
optical
properties
in
a
coating
still
challenging.
Herein,
an
all-in-one
inspired
by
hierarchical
structure
lotus
leaf
combines
surface
wettability,
structure,
self-adaptation
obtained
through
simple
one-step
phase
separation
process.
This
exhibits
asymmetrical
gradient
surface-embedded
hydrophobic
SiO
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(23)
Published: Feb. 12, 2024
Abstract
Passive
radiative
cooling
technologies
play
an
integral
role
in
advancing
sustainable
development.
While
the
potential
of
polymer‐based
materials
is
increasingly
recognized,
they
often
degrade
under
prolonged
ultraviolet
(UV)
radiation
exposure,
which
undermines
both
their
mechanical
and
performance.
To
address
this
challenge,
a
coaxial
electrospinning
method
to
prepare
BST@TPU
membrane,
with
core
layer
strontium
barium
titanate
nanorods
(BST
NRs)
shell
thermoplastic
polyurethane
(TPU)
employed.
Capitalizing
on
UV
absorption
free
radical
adsorption
properties
BST
NRs,
stability
TPU
membrane
significantly
increased.
Additionally,
inclusion
high
refractive
index
NRs
compensates
for
decrease
reflectivity
caused
by
absorption.
After
216
h
continuous
0.7
kW
m
−2
irradiation,
initially
exhibits
reflectance
97.2%,
demonstrated
modest
decline
92.1%.
Its
net
power
maintains
85.78
W
from
initial
125.21
,
extending
useful
lifetime
threefold.
This
innovation
extends
promise
enhancing
efficiency
durability
materials,
contributing
solutions
across
various
applications.
Science,
Journal Year:
2024,
Volume and Issue:
386(6723), P. 788 - 794
Published: Nov. 14, 2024
Subambient
daytime
radiative
cooling
enables
temperatures
to
passively
reach
below
ambient
temperature,
even
under
direct
sunlight,
by
emitting
thermal
radiation
toward
outer
space.
This
technology
holds
promise
for
numerous
exciting
applications.
However,
previous
demonstrations
of
subambient
require
surfaces
that
directly
face
the
sky,
and
these
cannot
be
applied
vertical
are
ubiquitous
in
real-world
scenarios
such
as
buildings
vehicles.
Here,
we
demonstrate
peak
sunlight
using
a
hierarchically
designed,
angularly
asymmetric,
spectrally
selective
emitter.
Under
about
920
watts
per
square
meter,
our
emitter
reaches
temperature
is
2.5°C
corresponding
reduction
4.3°
8.9°C
compared
with
silica-polymer
hybrid
cooler
commercial
white
paint,
respectively.
ACS Nano,
Journal Year:
2024,
Volume and Issue:
18(17), P. 11120 - 11129
Published: April 16, 2024
Passive
radiative
cooling
(PRC)
has
been
acknowledged
to
be
an
environmentally
friendly
technique,
and
especially
artificial
photonic
materials
with
manipulating
light–matter
interaction
ability
are
more
favorable
for
PRC.
However,
scalable
production
of
advanced
biologically
inspired
structures,
fascinating
properties,
high
throughput
is
still
challenging.
Herein,
we
reported
a
bioinspired
design
combining
surface
ordered
pyramid
arrays
internal
three-dimensional
hierarchical
pores
highly
efficient
PRC
based
on
mimicking
natural
structures
the
white
beetle
Cyphochilus'
wings.
The
biological
film
consisting
bottom
side
length
4
μm
together
amounts
nano-
micropores
was
fabricated
by
using
phase
separation
quick
hot-pressing
process.
Optimization
pore
surface-enhanced
enables
possess
average
solar
reflectance
∼98%
infrared
emissivity
∼96%.
A
temperature
drop
∼8.8
°C
below
ambient
recorded
in
daytime.
Besides
notable
capability,
exhibits
excellent
flexibility,
strong
mechanical
strength,
hydrophobicity;
therefore,
it
can
applied
many
complex
outdoor
scenarios.
This
work
provides
mold
replication-like
route
develop
passive
devices.
Advanced Materials,
Journal Year:
2024,
Volume and Issue:
36(25)
Published: March 1, 2024
Abstract
Radiative
cooling
technology
is
well
known
for
its
subambient
temperature
performance
under
sunlight
radiation.
However,
the
intrinsic
maximum
power
of
radiative
limits
when
objects
meet
thermal
shock.
Here,
a
dual‐function
strategy
composed
and
latent
heat
storage
simultaneously
enabling
efficient
high‐efficiency
thermal‐shock
resistance
proposed.
The
electrospinning
absorption‐pressing
methods
are
used
to
assemble
cooler.
high
reflectivity
mid‐infrared
emissivity
film
allow
excellent
5.1
°C.
When
subjected
shock,
cooler
demonstrates
pinning
effect
huge
drop
39
°C
stable
low‐temperature
level
by
isothermal
absorption
compared
with
traditional
molten
phase
change
materials
provide
heat‐time
transfer
converting
delayed
preservation.
This
paves
powerful
way
protect
from
accumulation
high‐temperature
damage,
expanding
applications
technologies.
