High5iveâ„¢ advanced high-voltage cells from ETV Motors Ltd.

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Not on the market yet... but:
http://etvmotors.com/advanced-battery.htm

At the present time, the LiFePO4/Graphite electrochemical couple offers the most promise as it provides power, safety and cycle life beyond those of mature cobalt-based systems.

Although LiFePO4 has many advantages, it suffers from low potential (3.45 volt, vs. Li+/Li), and low material density (3.6 g cm−3). Batteries based on this cathode have relatively low energy-density: approximately 50% that of the cobalt-based system.
New battery systems that have the positive attributes of the LiCoO2 and the LiFePO4 systems, while overcoming their respective deficits, are in great demand.

Spinel advantages
High voltage spinel oxides are promising candidates. This type of cathode chemistry has been studied for a number of years. However, the high voltage has detrimental effects which until now have thwarted its wider implementation in commercial batteries:
Oxidation of the electrolyte solvent resulting in damage to the anode and cathode SEI structures, in mechanical blockage of electrode active sites and in parasitic reactions.
PPM concentrations of HF due to residual moisture in the electrolyte - resulting in partial dissolution of metal ions in the cathode and in damage to the anode and cathode SEI structures.

To address these challenges and develop a breakthrough lithium-ion battery cell, ETV Motors assembled an R&D team with a proven track record in developing disruptive electro-chemistries that have reached the commercial marketplace. In collaboration with the renowned electrochemistry team at Bar Ilan University's Department of Chemistry, it is developing a 4.7V Lithium Manganese Nickel Oxide (LMNS) cathode that overcomes the problems experienced by other researchers.

tks
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[heathyoung]

Interesting... Will see if it makes it to market though.

Was anyone else thinking of Borat as well? Was on TV last night... High Five!

 

[neptronix]

"proven track record in developing disruptive electro-chemistries"
Guhhhhhhh... marketing speak.

Anyway, this would be bitchin.. less cells = less complex BMS and wiring. 10s would be 47v. You need 14-15 cells of LifePo4 to pull that off. Peak voltage would be what, 5.2v or so? I like that because it's close to the standard USB voltage.