As hybrid cars gobble rare metals, shortage looms
September 1st, 2009LOS ANGELES (Reuters Mon Aug 31, 2009) - The Prius hybrid automobile is popular for its fuel efficiency, but its electric motor and battery guzzle rare earth metals, a little-known class of elements found in a wide range of gadgets and consumer goods.
That makes Toyota’s market-leading gasoline-electric hybrid car and other similar vehicles vulnerable to a supply crunch predicted by experts as China, the world’s dominant rare earths producer, limits exports while global demand swells.
Worldwide demand for rare earths, covering 15 entries on the periodic table of elements, is expected to exceed supply by some 40,000 tonnes annually in several years unless major new production sources are developed. One promising U.S. source is a rare earths mine slated to reopen in California by 2012.
Among the rare earths that would be most affected in a shortage is neodymium, the key component of an alloy used to make the high-power, lightweight magnets for electric motors of hybrid cars, such as the Prius, Honda Insight and Ford Focus, as well as in generators for wind turbines.
Jack Lifton, an independent commodities consultant and strategic metals expert, calls the Prius “the biggest user of rare earths of any object in the world.”
Each electric Prius motor requires 1 kilogram (2.2 lb) of neodymium, and each battery uses 10 to 15 kg (22-33 lb) of lanthanum. That number will nearly double under Toyota’s plans to boost the car’s fuel economy, he said.
ZED COMMENT: Is this the death knoll of the electric car? First, Mitsubishi announces that there will be a lithium shortage by 2015, and now there is a known pending shortage of rare earth material. The electric car cannot operate without either, and there are no known new sources. ZED engines however, are powered by hydrogen, infinitely available as the most abundant element in the universe. ZED engines are also made of 100% recyclable, common metals. With no limitations on fuel, and no limitations on materials, the ZED engine is a “perfect” solution to power transportation with zero emissions.