Battery Energy Density Breakthroughs

"The Olivine-type lithium iron phosphate used in this new battery is extremely suited for use as a cathode material due to its robust crystal structure and stable performance, even at high temperatures. By combining this new cathode material with Sony's proprietary particle design technology that minimizes electrical resistance to deliver high power output, and also leveraging the cell structure design technology Sony accrued developing its current "Fortelion series" lithium ion secondary battery line-up, Sony has realized a high power density of 1800W/kg and extended life span of approximately 2,000 charge-discharge cycles."

Automakers could slash costs of electric cars by the 2015 model year with a battery chemistry breakthrough from the IBM tech company using its air battery.

In theory, this air battery's energy density can be much higher because the cathode is replaced by the atmosphere!

More efficient battery energy density / cost... technology can power Automobiles and back up
photo-voltaic/solar installations....
Found online: "At present, the world biggest grid scale battery is a bank of nickel cadmium cells in Fairbanks, Alaska, which can produce up to 52 MW of emergency backup power for about 15 minutes."

Also found online...

Rotating Inertia Members

The high density and unique physical properties of tungsten alloys enable components to be rotated at extremely high speeds and provide increased momentum using less space. Use our high-density alloys for gyro rotors, fly wheels, navigation devices, inertial guidance systems and rotating members for governors.

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Envia Systems claims its breakthrough boosts lithium-ion battery density from a current level in the 110-140 watt-hours/kilogram range to well past 400 watt-hours/kilogram (Wh/kg).

Keywords battery energy density, batteries, cell chemistry, battery chemistry, battery chemistries, anode, cathode, electrolyte, separator, energy cells,,evolution, lithium, lithium ion, nicad, nimh, lead acid, redox, reduction, oxidation, technology, periodic table, groups, periods