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An interesting and EXCELLENT read...

http://www.vox.com/2015/2/22/8084703/powerhouse-steve-levine-review

In The Powerhouse, LeVine reveals the drama generated by the lithium-ion battery by tracking two parallel narratives: the work at Argonne National Laboratory's battery program, home to scientists LeVine calls the world's "battery geniuses," and efforts of Silicon Valley start-ups like EnVia Systems (the first licensee for Argonne's material). Researchers in both settings are racing to build a product marketable enough to secure contracts and a billion-dollar IPO. The book, says Levine, is "reflective of that environment...where so much hope and buzz and really a fever had come to center on the battery."
 

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Research for improved battery chemistries and increased energy densities (kWh per kg) is very important, but there are other sources of portable power that are better but never used or considered in eletric vehicles. One is a themoelectric generator powere by radioactive material. It is so efficient that most of the long distance satellites and exploration spacecrafts (including Voyager, Galileo, and Magellan) use it because it gives out more watts of power per weight, but who wants a radioactive device in their daily ride?

This is why the next important part of power source technology is testing in real road conditions and durabilty. And that is what GM is doing with the newer battery technologies in its lab in Michigan, where the results are seen in the new generation of electric vehicles. GM does this because they have to guarantee eight to ten years of usefual and safe power in their products. No one has been killed or injured by the battery in the thousands of Volts already on roads since Novenber 2010.

So, if you want to drve the best EVs (Volt, ELR, Spark, and Bolt), wait until GM has tested and proven the technology. Until then, any new discovery is just a dream (like the fusion drive in Doc Brown's DeLorean from the "Back to the Future" movies).
 

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supercapacitors helps and is something i've briefly looked into that seems to be one of the next steps for the industry to implement to meet growing range demands. Just not sure when we can expect that era to usher in
 
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