Lithium manganese oxide particles have been produced with an average diameter less than about 250 nm. The particles have a high degree of uniformity. The particles are formed by the heat treatment of nanoparticles of manganese oxide. The lithium manganese oxide particles are useful as active materials...http://www.google.fr/patents/US6136287?utm_source=gb-gplus-shareBrevet US6136287 - Lithium manganese oxides and batteries