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Fluoride battery has potential to hold ten times more energy than lithium battery

Few things hold as much potential to change a wide variety of devices for the better than the battery. Batteries with higher power capacity will allow for gadgets like notebooks and smartphones to operate longer away from an outlet. Higher power densities will allow a longer driving range for electric cars as well.
 
Researchers at the Karlsruhe Institute of Technology (KIT) have made a battery breakthrough that promises to increase energy capacity significantly.
 
The researchers developed a new concept for rechargeable battery that needs no lithium and can hold many times more energy inside than existing batteries. The new battery concept uses fluoride and is based on a fluoride shuttle that transfers anions between electrodes. Since the battery doesn't need lithium, they are also safer.
 
The concept was presented in the Journal of Materials Chemistry by Dr. Maximilian Fichtner and Dr. Munnangi Anji Reddy.
 
The new concept can be used in batteries in two ways. They metal fluorides can be applied as a conversion material in a lithium-ion battery and can be used to create batteries needing no lithium at all. The lithium-free batteries can store more energy at a lower weight using a fluoride containing electrolyte. In that form of battery the fluoride anion takes over charge transfer from the lithium cation.
 
Dr. Fichtner said, "As several electrons per metal atom can be transferred, this concept allows to reach extraordinarily high energy densities – up to ten times as high as those of conventional lithium-ion batteries."
 
The researchers are tweaking the design right now to work on further development and architecture. The goal is to improve the initial capacity and cyclic stability of the fluoride-ion battery. 

Source: KTI



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RE: flouride supply
By Etsp on 10/24/2011 4:58:42 PM , Rating: 2
China has very little to do with global lithium supplies.

Lithium is an alkali metal, not a rare earth mineral. The main producers of Lithium are Chile and Argentina. One of the largest reserves of Lithium is in Bolivia, and there are a number of other countries that have access to this resource.


RE: flouride supply
By JediJeb on 10/24/2011 6:24:39 PM , Rating: 2
Wasn't there a story recently about the Chinese buying up the Lithium mines in South America? If that is true they would control a large portion of that market as well as the Rare Earth metals market.


RE: flouride supply
By michael67 on 10/25/2011 4:22:21 AM , Rating: 2
Every one is buying interest in Lithium mines all over the world, Afghanistan has rumored of example 30% of all known Lithium deposed in the world.


RE: flouride supply
By Zoomer on 10/25/2011 3:26:45 PM , Rating: 2
It's ok, let them buy it all at super high prices, then unveil floride batteries tomorrow.


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