M3ta Subsol

Surse de energie noi si ecologice

Posted in eco-anarhism by gheorghe on 30/11/2007

Oare sa fie aceasta o solutie la criza energetica si ecologica?

 

Betavoltaic Batteries

A betavoltaic battery is a nuclear battery that converts energy from beta particles (electrons) released by a beta emitting radioactive source, such as tritium, into electrical power. The application of tritiated amorphous silicon as an intrinsic energy conversion semiconductor for betavoltaic devices is presented. Thin-film contact potential tritiated amorphous silicon cells have been built. These cells, called tritium batteries, have a specific power of 24 watts per kilogram, a full load operating life of 10 years, and an overall efficiency on the order of 25%. Cheap, long-life, high energy density, low-power batteries. The entrapment of tritium is particularly apt in this application as it is readily substituted for the hydrogen present in hydrogenated amorphous semiconductors with good intrinsic electronic properties. Radioisotopes other than tritium, may also be used as a source of energetic electrons as well as other forms of energetic nuclear radiation such as krypton-85 for example. Tritiated amophous films are mechanically stable, free for flaking or blistering, with good adherence to the substrate and may be simultaneously deposited onto both conducting and insulating substrates and may be simultaneously deposited onto both conducting and insulating substrates using a discharge in tritium plasma. The silicon layer sputtered in a tritium/argon ambient at temperatures below 300’C results in a tritiated amorphous silicon film with the tritium concentration being variable from 5 to 30% depending upon deposition conditions. See patent #4,835,433.
http://www.automorrow.com/articles/betavoltaic.html

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