News That Matters

Tag: batteries

Watch live: Astronauts swap out batteries during spacewalk

Watch live: Astronauts swap out batteries during spacewalk

Science
March 29 (UPI) -- Astronauts Nick Hague and Christina Koch are preparing to venture outside the International Space Station for a 6.5-hour spacewalk. The flight engineers are scheduled to begin their spacewalk at 8:20 a.m. ET. NASA TV will provide live coverage of the spacewalk beginning at 6:30 a.m. The duo will replace batteries on the station's starboard truss, part of an ongoing effort to upgrade the ISS power system. Astronaut Anne McClain was originally slated for the spacewalk as part of the first all female spacewalk, but NASA cancelled it Tuesday because the right size spacesuit for both women to complete the mission is not available. Friday's spacewalk is the second this month. Last week, Hague and McClain swapped out three old nickel-hydrogen batteries and installed powerful ...
Rice scientists say nanotube film could make for better batteries

Rice scientists say nanotube film could make for better batteries

Science
Oct. 26 (UPI) -- The inclusion of films of carbon nanotubes could be key in building a longer-lasting battery, scientists at Rice University said. Led by chemist James Tour, the researchers used the nanotube films to come up with a way to halt the growth of dendrites on a battery's unprotected lithium metal anodes, Rice said in a news release Thursday. They published their results this month in the journal Advanced Materials. The dendrites usually degrade batteries by reaching their cathodes, prompting consumers to avoid lithium batteries in favor of their lithium-ion counterparts because developers can slow dendrite growth in lithium-ion batteries by slowing their charge time, Tour said. But Tour and his team determined that dendrite growth can be slowed in lithium batteries by using a s...
Zinc-air batteries provide power in remote areas

Zinc-air batteries provide power in remote areas

Technology
Remote villages in Africa and Asia are receiving electricity using a little-known type of technology: zinc-air batteries. The goal is to provide a battery that can capture renewable energy and store it for later use. California-based NantEnergy said Wednesday it has created a rechargeable zinc-air battery storage system that can provide power at a lower cost than lithium-ion systems. The technology has been deployed in more than 110 villages serving 200,000 people who have no other access to electricity in their communities, said NantEnergy chairman Patrick Soon-Shiong. "If you look at a map of Earth at night and you see where it's darkest, it's in Africa, Asia and developing countries," said Soon-Shiong, who is also the owner of the Los Angeles Times. "To reduce cost and be competitive ...
Apple's iPhones slowed to tackle ageing batteries

Apple's iPhones slowed to tackle ageing batteries

Technology
Apple has confirmed the suspicions of many iPhone owners by revealing it does deliberately slow down some models of the iPhone as they age.Many customers have long suspected that Apple slows down older iPhones to encourage people to upgrade.The company has now said it does slow down some models as they age, but only because the phones' battery performance diminishes over time.Apple said it wanted to "prolong the life" of customers' devices.The practice was confirmed after a customer shared performance tests on Reddit, suggesting their iPhone 6S had slowed down considerably as it had aged but had suddenly sped up again after the battery had been replaced."I used my brother's iPhone 6 Plus, and his was faster than mine? This is when I knew something was wrong," wrote TeckFire.Technology webs...