A nice promising breakthrough in the electric vehicle batteries, where the rate at which a battery can be recharged is greatly improved. From 0-90% in 2 minutes seems within reach at an increased cost of 20-30% of the battery.
The technology increases the area of the battery that is used in the (electro)chemical reactions, thus allowing a larger amount of electrons and ions to travel. Currently it is only applied on the cathode. Dr. Braun is currently looking into applying it to the anode of the battery as well, so expect another improvement there.
Great stuff!
A Nissan Leaf battery, charged to 90% in 2 minutes? It might be just around the corner...
Battery technology: Highly charged | The Economist
http://www.economist.com/node/18437910
The battery-maker’s dilemma is that the recharging rate depends on the area of contact between electrolyte and electrode. A thin, sandwich-like arrangement, in which cathode, electrolyte and anode are close together, can thus be discharged and recharged rapidly. However, this speed comes at a price. The amount of energy a battery can store depends on the volume of its electrodes, so a thin battery does not last long. What is needed is a way to increase contact area without sacrificing volume. And that is what Dr Braun has found. Moreover, his solution looks suitable for mass production.
(via Instapaper)
Geen opmerkingen:
Een reactie posten