Automated compact ironing press comprising a base on which is articulated a pressing arm bearing a heating plate for co-operating with one of the two ironing boards installed in the base. The low resistivity deep region acts to provide electrical contact with the substrate, which is a common drain region for the device. 2, 0\u2266x\u22661 and 0\u2266y\u22661 in which M is one or more of Li, Na, K, Ca, Mg, Al, Ti, Sc, Ge, V, Cr, Zr, Co, Ni, Zn, Cu, La, Ce, Mn, Hf, Nb, Ta, Mo, W, Ru, Ag, Sn, Pb and Si and Z is one or more of OH, halogens, N, P, S and O, and the primary particles of the positive electrode material have a spheroidal topography.