•Scalable, passive, all-season temperature regulation through photon recycling
•Daytime sub-ambient passive cooling by 8.0°C in summer
•Nighttime supra-ambient passive warming by 6.8°C in winter
•Fire retardant, reliable in thermal, cryogenic, vibration, and corrosive environments
When an electric vehicle is parked outside, its temperature can swing wildly from day to night and season to season, which can lead to deterioration of the battery. To dampen these fluctuations and extend the battery’s lifespan, researchers have designed an all-season thermal cloak that can cool an electric vehicle by 8°C on a hot day and warm it by 6.8°C at night...
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