Springen naar inhoud

- - - - -

Graphene supercapacitor breaks storage record


  • Log in om te kunnen reageren

#1

DePurpereWolf

    DePurpereWolf


  • >5k berichten
  • 9240 berichten
  • VIP

Geplaatst op 02 december 2010 - 17:39

Graphene supercapacitor breaks storage record

Researchers in the US have made a graphene-based supercapacitor that can store as much energy per unit mass as nickel metal hydride batteries – but unlike batteries, it can be charged or discharged in just minutes or even seconds. The new device has a specific energy density of 85.6 Wh/kg at room temperature and 136 Wh/kg at 80 °C. These are the highest ever values for "electric double layer" supercapacitors based on carbon nanomaterials.

Supercapacitors, more accurately known as electric double-layer capacitors or electrochemical capacitors, can store much more charge than conventional capacitors. An important feature of supercapacitors is that there is an extremely narrow gap between the electrodes – which are ultrathin layers. This means that a large amount of electrical charge can be stored in a tiny volume.

...

Lees verder: http://physicsworld....icle/news/44477

Bron: physicsworld.com

Dit forum kan gratis blijven vanwege banners als deze. Door te registeren zal de onderstaande banner overigens verdwijnen.




0 gebruiker(s) lezen dit onderwerp

0 leden, 0 bezoekers, 0 anonieme gebruikers

Ook adverteren op onze website? Lees hier meer!

Gesponsorde vacatures

Vacatures