The days of electric vehicles that can only travel 80 to 100 miles per charge are numbered. That is, if a study from University of Cambridge is true. Det skriver Mashable på sin hemsida.
While many factors contribute to the limited range of modern EVs, the main factors that hold back EVs from traveling as far as gasoline-powered vehicles are lithium-ion battery energy density, weight and cost. However, that may change soon, thanks to lithium-oxygen batteries.
Researchers at University of Cambridge in the UK have created a laboratory demonstration of lithium-oxygen, or ”lithium-air,” batteries that have around 10 times the energy density of the lithium-ion batteries used in today’s EVs — roughly equivalent to the energy density of gasoline, according to a study in the latest edition of the journal Science.
More than simply holding more energy, the batteries are also more than 90% efficient and can be recharged more than 2,000 times, the study says. To put that into perspective, most current lithium-ion batteries are 80% to 90% efficient.
But here’s where things really get exciting: Lithium-air batteries could be five times less costly and five times lighter than today’s lithium-ion cells.
If these batteries were truly 10 times more powerful and five times lighter than batteries currently used in EVs range could be extended upward of 400 miles per charge — or further than the distance from LA to San Francisco(or London to Edinburgh, as the researchers proposed) without stopping to recharge. This technology, of course, has more applications than mobility; it could affect mobile devices, too. Imagine if your smartphone battery could be 10 times thinner, or 10 times longer-lasting, if it remained the same size.
”What we’ve achieved is a significant advance for this technology and suggests whole new areas for research — we haven’t solved all the problems inherent to this chemistry, but our results do show routes forward towards a practical device,” professor Clare Grey of Cambridge’s Department of Chemistry, the paper’s senior author, wrote.
Although the researchers have demonstrated the batteries in a lab, they predict that a production-ready version is around a decade away. So while your next car might not have lithium-air batteries underpinning it, the one after that just might. And as far as smartphones go, we can hope for the iPhone 18.