Patent ID: 7682596

Claim:
A powdery compound selected from the group consisting of Li 4 Ti 5 O 12 and its derivatives which are selected from the group consisting of Li 4−x M x Ti 5 O 12 and Li 4 Ti 5−y N y O 12 wherein x and y are between 0 and 0.2 while M and N are selected from the group consisting of Na, K, Mg, Nb, Al, Ni, Co, Zr, Cr, Mn, Fe, Cu, Zn, Si and Mo, consisting of two distinct granulometric groups a first group being unitary particles, not agglomerated, having a diameter less than or equal to 1 μm and a second group being grains formed by agglomeration of the unitary particles, each grain having a diameter less than or equal to 100 μm, wherein the second group comprises from 10% by volume to 50% by volume with respect to a total volume of the powdery compound, and the remainder of the volume of the powdery compound is the first group.