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AAAAAAAAA-size Li-Ion Cells

Posted by timothy on from the batteries-make-the-world-go-round dept.

Jasin Natael writes "Thought Li-Ion batteries were all the same? Think again. Several universities, under a grant from the US Office of Naval Research, are miniaturizing the anodes and cathodes of Li-Ion batteries to nanoscale, hoping to make more efficient, smaller cells that last longer."

2 of 124 comments (clear)

  1. Energy Density Does Not Scale. by WittyName · · Score: 5, Informative

    This is a constant, dependant on the substance used in the battery. They may get 10 percent more watt hours in this battery. Peak current should be better, due to larger surface area of the anode/cathode. Lithium Polymer batteries have a higher energy density BTW.

    --
    The law is a weapon of the government, not a protection for the likes of you. Surely you understand that.
  2. Re:Speaking of battery size ... by Anonymous Coward · · Score: 4, Informative

    They used to, a hundred years ago. The B battery in a tube radio was the plate voltage, around 200V or more. This is why to this day you can still find people who will call the main supply in an amplifier the B+ or the B supply.
    Of course these batteries were large and complex, and where replaced by transformer supplies as soon as electrification of households was popular enough.

    "A" batteries were filament batteries, at 6.3V, for the tube heaters (you know those tubes that glow? You gotta heat em up to get that glow).