Many of us have been watching with interset the race between LG Chem and A123 Systems to become the supplier of the GM Volt’s battery system. After all, energy storage is currently the most crucial puzzle left to solve to make battery electric cars and plug-in hybrids viable. We need batteries that store as much [...]
We have not seen an EEStor ultracap car on the road yet, but AFS Trinity Power has a prototype plug-in hybrid on the road for the auto show that mixes batteries, ultracapacitors and a gas engine, creating a hybrid hybrid. Matthew Wald of the New York Times explains why with a tasteful analogy:
“The problem in a hybrid is not only how much energy the batteries hold, a quality called energy density, but how fast they can deliver it, called power density. The difference between energy density and power density is like the difference between a wine jug and a peanut b…
While Treehugger continues to be excited about hybrids, and of course plug-in hybrids, we can’t help but also be impressed with the efficiencies being achieved by the simple diesel engine – for example, we got particularly excited by the prospect of Honda bringing a diesel Accord to the US by 2010. Scrolling through the always informative Green Car Congress, we came across an item about
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