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Electric Vehicle and Lithium-ion Battery Investing For Imbeciles

By John Petersen, Contributor
November 1, 2011   |   2 Comments

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2 Reader Comments
Comment
1 of 2
November 1, 2011
Add to this the fact that older chemistries do have enough room for enhancement to bring their gravimetric energy density up to where it is needed for use in EVs. EVs will always need a front-bank of either Li-ion batteries or ultracapacitors to handle rapid acceleration and regenerative braking, but that pack can be small compared to the main battery pack, which only needs to put out maybe twice as much power as the car needs to maintain highway speeds.

Some of the same nanotech enhancements being studied in Li-based chemistries have analogues in the NiMH chemistry. If someone surprises the market with a high energy-density NiMH cell which is cheaper than the Li-based cell of the same *energy density* then Li-based chemistry manufacturers suffer another cut to their market. Same goes for some of the alternate chemistries knocking around out there.

Now power density, where Li has more of an advantage, matters most to the consumer in that it determines the charging time the vehicles need. This will always be a consideration, but in the meantime no matter your power density, you will be limited by the practical level of power you can pump through the 240V 3-phase hookup you get installed in your garage. So there will be a phase where those who can manage to schedule their car use with their daily life become recognized as a consumer segment, and the trade magazine stop freaking out about it as if its a deal killer for all EVs everywhere.

Li has a while to run in the mobile computing marketplace for lack of an alternative energy density leader.

The solid market for Li is in lightweight on-site high power applications. This is in industry, military, and if the consumer ever wises up, power tools (A123/Dewalt did try, but...)

Personally I'd buy an Li based UPS system just because they last longer in calender years than the lead-acid we use now. But then, I'd also buy an NiMH based system. If I could. For the most part, you can't, though.
Comment
2 of 2
November 1, 2011
Hi:

"I left Geneva convinced that the Fisker Karma was the most beautiful passenger car I'd ever seen."

Serves you right!! for judging functionality by looks...
You look old enough to know, not to judge a book by it cover...

.....Bill
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John Petersen

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About: firm of Fefer Petersen & Cie (www.ipo-law.com) and represents North American, European and Asian clients, principally in the energy and alternative energy secto... more »

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