Price varies with purity of the rare earth and volume; but, Jones' price is accurate for a single kg. Prices could fall to a buck per kg for a metric tonne.
Sent from my Verizon Wireless 4G LTE Smartphone ----- Reply message ----- From: "Jones Beene" <[email protected]> To: <[email protected]> Subject: [Vo]:Ghost of the HotCat ? Date: Sat, Jul 20, 2013 8:00 PM Quoted price for LaNi5 in 2011 was $70/kg for EADS. Of course, if you buy it a few grams at a time, the cost will be much more. Of the rare earths, lanthanum seems to be the cheapest. Interesting factoid is that a massive volume of hydrogen can be contained in the Rossi HotCat if the center tube is filled with LaNi5H6. That tube would easily hold a kilogram of hydride or 5/360=14 grams of H2 To put that into perspective, if the net energy from the reaction was one MeV per proton, which is low for fusion, this would be the equivalent of ~22 megawatt hours allowing a 5 kW version of the device to run for the 6 months that Rossi often quotes as being his goal. That 6 month supply is unrealistic IMO - but it could have been Rossi's design goal - and it could be the reason that AR was thinking "why not ditch the hydrogen tank altogether, if the metal hydride can store so much?" From: Teslaalset Big question of course is how affordable is this stuff? Terry Blanton het volgende: "In fact, many hydrides, including LaNi5H6, store more hydrogen per unit volume than does liquid hydrogen. Furthermore, at modest hydrogen pressures (a few bars), LaNi5H6 releases hydrogen at or near room temperature. Its hydriding kinetics are also acceptable, and laboratory quantities can be dehydrided and rehydrided in 5 to 10 min. The main challenge of metal hydrides is their weight. Because the hydrogen content of LaNi5H6 is only 1.4% by weight (wt%), storing 5 kg of hydrogen would require 360 kg of LaNi5H6." http://www.aip.org/tip/INPHFA/vol-10/iss-1/p20.html Stores more hydrogen than liquid hydrogen. Remarkable!
