Wednesday, June 10, 2009

Lithium-Sulfur Batteries Could Store Triple The Power of Lithium-Ion

A research team from the University of Waterloo has synthesized a prototype of a lithium-sulphur rechargeable battery that, thanks to its peculiar nanoscale structure, can store three times the power of a conventional lithium-ion battery in the same volume while being significantly lighter and potentially cheaper to manufacture.

Successfully combining lithium and sulfur delivers much higher energy densities while reducing the cost of the materials used. According to internal testing, the composite material synthesized by Nazar's team can supply as much as 84 percent of the theoretical capacity of sulphur - three times the energy density of lithium transition cathodes. This should account for significantly more efficient batteries which will be lighter as well.

How much lighter? "We estimate the energy density of our cells to be about 1200 Wh/kg, for just the positive electrode, which would put the energy density of the cell at about 500 Wh/kg or more, but this depends on the other components of the cell," Dr. Nazar told us via email. "That is about a factor of 3 to 5 times more than a conventional lithium-ion battery. However, capacity fading can be more of an issue, along with lower volumetric energy and those need to be tackled more fully."

Finally, with regard to production costs, Dr. Nazar told us that, while the material themselves are certainly cheaper than those employed in lithium-ion batteries, it would be hard to quantify how much cheaper lithium-sulfur batteries will be. "Clearly the basic raw materials for the positive electrode (sulfur and carbon) are very inexpensive, but there are costs associated with processing, electrolyte, fabrication, etc that are highly dependent on the optimization of the materials and the battery configuration."
via Gizmag via Gizmodo

1 comment:

Back links of Emon 5 Seo said...

Hi ,

Thanks for writing such an interesting article. Its really good to know about the batteries in detail. Seriously do we realize how many things in your house that need batteries? Let’s count it, from the flashlight, cell phone, iPod, cameras, and many more. Knowing it should make us realize on how essential the presence of the batteries in our daily life. However, with that so many kinds of battery, which is generally different between one to another, sometimes we have some difficulties in finding the desired type.

Find the right batteries supplier is not hard if you check out because this website provides the widest selection of batteries and you can choose the right battery based on the categories. You can get the procell batteries which available in several sizes and voltage. You also can find Duracell batteries that divided into duracell plus batteries and duracell ultra batteries. All of the batteries come with cheaper price because this website provides the discount batteries in bulk, wholesale, and retail quantities.

- Cresty Abraham

Post a Comment

Note: Only a member of this blog may post a comment.