Chinese researchers have developed a new type of material to absorb heat from the sun during the day and emit energy to outer space to harvest cooling at night in a novel approach for harvesting renewable energy, Xinhua news agency reported on Wednesday.
The results of their study were published online in the Proceedings of the National Academy of Sciences (PNAS). The breakthrough finding is in harvesting "heat and cool" in a single structure, saving space and reducing costs, according to Pei Gang and Zou Chongwen, leading scientists from the University of Science and Technology of China.
The base of the coating material is vanadium dioxide (VO2) film and its switch from heating to cooling mode throughout a 24-hour day-night cycle creates no extra energy costs, said the Chinese scientists.
With self-adaptability properties, the VO2 film is in a metallic phase and can be heated to 170 degrees Celsius above ambient temperature under sunshine, while in darkness, the VO2 film transforms into an insulator and can be cooled to 20 degrees Celsius below ambient temperature.
The material could be applied to fields including energy conservation in buildings, cooling photovoltaic systems, thermoelectrics and energy supply in outer space, according to Pei.
The issue facing the use of the material is high costs. However, substitute materials with similar techniques but lower efficiency are close to mass production.
- China expedites energy sector’s green shift over decade: report
- China launches space-based observatory to unravel the Sun’s secrets
- Chinese scientists find new way for robust DNA data storage: Nature
- Chinese scientists discover new lunar mineral
- Three scientists win China’s 2022 Future Science Prize
- Scientists design two-in-one antibodies against COVID-19 variants
Popular Videos
Hot comments
- First apes at U.S. zoo receive COVID-19 vaccine made for animals, zoo official says
- China Life: Chinese women shine with She Power
- Foreign firms approved to offer VPN services in capital
- Homemade curling videos trending in China
- 86-year-old grandma in Hebei spends most her life on traditional cheongsam
- Winners of 2022 Inaugural WLA Prize announced
- Lantern Festival: A romantic celebration in China
- Two Chinese COVID-19 vaccine firms to supply vaccines to COVAX
- Media center for 20th CPC national congress to open on Oct. 12
- Six suspects arrested in HK for role in SE Asia job scam
Top Reviews
- Young artists recreate beauty of traditional Hanfu costume
- China releases photos of tallest tree
- English version of ‘Understanding Xi Jinping’s Educational Philosophy’ published
- China crowned in men’s team for 10th straight time at table tennis worlds
- China publishes Atlas of Wildlife in SW China
- Guangxi’s 10 Years: A Visit to China’s Qinzhou Port
- Congress delegate helped lift village out of poverty
- Expo highlights joint efforts in NEV development
- Racism stain of shame on ‘world democratic paradise’
- U.S. may face new COVID wave this upcoming winter: report