An alloy of lead telluride (PbTe) has been boosted to 22% efficient at converting heat to electricity
BSST is using thermoelectrics—blends of hafnium and zirconium thave increased the generator efficiency by about 40 percent over Bismuth telluride.
BSST and GM researchers also need to find ways to make larger volumes of the new materials cheaply, but it might be at least another four years before thermoelectric generators make it into production vehicles.
If you liked this article, please give it a quick review on ycombinator or StumbleUpon. Thanks