Researchers Strike Battery Fools Gold on Two Continents

Dean Sigler Batteries, Electric Aircraft Materials, Sustainable Aviation Leave a Comment

Better, Cheaper, Faster.  That was the mantra when your editor worked in the semiconductor manufacturing world.  Designs, processes and materials were all recalibrated constantly to enable the march toward those three goals.  And to some extent, constant repetition helped us achieve the ideal of Moore’s Law, the dictum that computer chips would double the number of transistors they contained every two years.  Transistor density in computer chips determines the level of performance they can achieve, and this doubling has yet to reach its end. Unfortunately, batteries haven’t doubled in performance every two years, but seem to follow an annual five-to-eight-percent increase in energy density.  This would mean, at best, that energy densities would double every nine years.  The Tesla Forum notes this progress would not be continuous, but introduced in steps. Without either party sharing much information on the energy densities of their experimental cells, researchers in America and Switzerland find the “super environmentally friendly” nature of fool’s gold in batteries …

A broader Overview of Biofuels

Dean Sigler Diesel Powerplants, Sustainable Aviation Leave a Comment

Are biofuels truly “green?” Gizmag this morning has an entry on Empa, the Swiss Federal Laboratories for Materials Science and Technology, which has just released a report showing that biofuels may not always be as green as we would like to think. Further, they note that gasoline, including that coming from shale oil sands (as in Keystone XL pipeline oil) may be cleaner than certain crop-derived combustibles. The headlines may stoke controversy, so it’s worthwhile to examine the short-form charts and press release, and compare the impressions gained from a quick glance with those from reading the 113-page study itself. Empa’s press release headline and lead give the impression that things are grim in the green world. The headline “Most biofuels are not ‘green’” is followed by “First tops, then flops.  That is one way of summing up the history of biofuels so far.  A new study led by Empa gives an up-to-date picture of the ecobalance of various biofuels …