Latest in Science

Image credit:

Stanford's aluminum battery fully charges in just one minute

7 Shares
Share
Tweet
Share
Save

Sponsored Links

Lithium-ion batteries have been a boon for the modern world -- they've replaced the heavier, single-use alkaline type in everything from wristwatches to jumbo jets. Unfortunately, these rechargeable cells are already struggling to keep up with our ever-increasing energy needs. But a new type of aluminum-ion battery developed at Stanford University is not only less explode-y than lithium, but also can be built at a fraction of the price and recharges completely in just over a minute. Best of all, "Our new battery won't catch fire, even if you drill through it," Stanford chemistry professor Dai Hongjie boasted in a recent release.

Unlike earlier aluminum batteries, which generally failed after only about 100 recharge cycles, Stanford's prototype can cycle more than 7,500 times without any capacity loss -- 7.5 times longer than your average li-ion. The aluminum-ion cell isn't perfect (yet) as it can only produce about 2 volts, far less than the 3.6V that lithium-ion an muster. Plus aluminum cells only carry 40 watts of electricity per kilogram compared to lithium's 100 to 206 W/kg power density. "Improving the cathode material could eventually increase the voltage and energy density," said Dai. "Otherwise, our battery has everything else you'd dream that a battery should have: inexpensive electrodes, good safety, high-speed charging, flexibility and long cycle life. I see this as a new battery in its early days. It's quite exciting."

All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Comment
Comments
Share
7 Shares
Share
Tweet
Share
Save

Popular on Engadget

Engadget's 2019 Back-to-School Guide

Engadget's 2019 Back-to-School Guide

View
Hyundai teases all-electric concept '45' for Frankfurt

Hyundai teases all-electric concept '45' for Frankfurt

View
iPhone Pro, new iPad and 16-inch MacBook Pro details emerge

iPhone Pro, new iPad and 16-inch MacBook Pro details emerge

View
Russia tests new Soyuz rocket by sending a humanoid robot to the ISS

Russia tests new Soyuz rocket by sending a humanoid robot to the ISS

View
Android Q is now simply Android 10

Android Q is now simply Android 10

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr