Home » Energy sources » The Germans invented the fluoride ion Battery


The Germans invented the fluoride ion Battery


In addition to an army of electrochemical power sources, scientists have developed another option. His alleged advantages are lower flammability and ten times as large specific capacity than lithium-ion batteries.

Chemists from the Karlsruhe Institute of Technology (KIT) proposed the concept of batteries based on metal fluorides and even experienced several small laboratory samples.

In these batteries for the charge transfer between the electrodes meet anions fluoride. The anode and cathode of the battery contain metals, which, depending on the direction of the current (charge or discharge) in turn converted into fluorides or restored back to metals.


“Since the metal atom can accept or give several electrons, this concept can achieve extremely high energy density – up to ten times faster than conventional lithium-ion batteries,” – said one of the authors of the development of Dr. Maximilian Fichtner (Maximilian Fichtner).

To test the idea of ​​German researchers have created a few samples of these batteries a diameter of 7 mm and a thickness of 1 mm. The authors examined several electrode materials (copper and bismuth in combination with carbon, for example), and the electrolyte formed on the basis of lanthanum and barium.
However, such a solid electrolyte – this is just an intermediate step. The convoy, carrying out the fluoride, only works well at high temperatures. Because chemists are looking for a replacement is a liquid electrolyte, which would operate at room temperature.