Reference: psc.edu/science/Wolf/Wolf.html <http://www.psc.edu/science/Wolf/Wolf.html>
Onset of the beta phase in palladium hydride at 300 degrees Kelvin. This phase change occurs as the concentration of hydrogen atoms (yellow) in the palladium (purple) increases. At early stages (the alpha phase), hydrogen atoms randomly populate small interstices in the lattice structure. At a critical point, the lattice expands, allowing hydrogen to *cluster at higher density*, as visualized here. This image shows the lattice from the (001) direction. The term cluster means the formation of nanoparticles. http://www.psc.edu/science/Wolf/neat3-lg.GIF On Wed, Jan 27, 2016 at 11:18 AM, Jones Beene <[email protected]> wrote: > *From:* Mats Lewan > > Don’t know if this contains new findings. Might be relevant for Pd+H > systems, and maybe also Ni+H systems. > > *"As the hydrogen is taken up over time, there is eventually a sudden > reconfiguration of the hydrogen distribution within the lattice, a process > colloquially referred to as “avalanching.” "* > > > *http://www.anl.gov/articles/hydrogen-uptake-causes-molecular-avalanches-palladium* > <http://www.anl.gov/articles/hydrogen-uptake-causes-molecular-avalanches-palladium> > > > Mats, as far back as 1938, achieving this “sudden reconfiguration” of > palladium was known and patented. Ironically, it takes a long time to > reach the stage of “sudden” which is one reason why results with > palladium electrodes are not assured. > > http://www.google.com.gh/patents/US2139529 >
