Featured Articles

Analysts expect ARM to do well next year

Analysts expect ARM to do well next year

British chip designer ARM could cash in on the mobile industry's rush to transition to 64-bit operating systems and hardware.

More...
Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Huawei and Xiaomi outpace Lenovo, LG in smartphone market

Samsung has lost smartphone market share, ending the quarter on a low note and Xiaomi appears to be the big winner.

More...
Intel Broadwell 15W coming to CES

Intel Broadwell 15W coming to CES

It looks like Intel will be showing off its 14nm processors, codenames Broadwell, in a couple of weeks at CES 2015.

More...
Gainward GTX 980 Phantom reviewed

Gainward GTX 980 Phantom reviewed

Today we’ll be taking a closer look at the recently introduced Gainward GTX 980 4GB with the company’s trademark Phantom cooler.

More...
Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac ZBOX Sphere OI520 barebones vs Sphere Plus review

Zotac has been in the nettop and mini-PC space for more than four years now and it has managed to carve…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 04 March 2014 11:36

Researchers close to sorting out Lithium-sulphur batteries

Written by Nick Farrell



Smelly power

Researchers have worked out a way to improve Lithium-sulphur batteries to make sure that they can be more commercial.

The technology promises to store four to five times as much energy as today’s best lithium-ion batteries but they are aren’t practical because they don’t last very long. Lithium-ion batteries can last 1,000 charge cycles, but lithium- sulphur batteries tend to fail before they’re charged 100 times.

Jeffrey Pyun, a chemist at the University of Arizona thinks electrodes made from sulphur polymers, like other plastic products, should be inexpensive to manufacture on a large scale. Then last year, Pyun’s group reported a way to transform this sulphur into an inexpensive cathode material. By heating the sulphur to 185 ºC and then adding an organic compound, 1,3-diisopropenylbenzene, the researchers form a copolymer containing strings of sulphur atoms tangled up with the diisopropenylbenzene.

To become a commercial product, a battery made with the sulphur polymer will need to have a steady storage capacity throughout its lifetime and be able to last the 1,000 cycles of today’s batteries. To get there, Pyun is experimenting with other kinds of sulphur copolymers that may have better properties.

He is not there yet but he thinks he is pretty close.

Nick Farrell

E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments