Patent ID: 9728781
Date: 2017-08-08
CPC Classifications: C01G,C01P,H01M,Y02E

Claim:
1. A sodium manganese composite oxide represented by Formula 1: wherein, 0.2≦x≦0.8, 0<y≦0.2, 0<z≦1, 0≦v<1, 0<z+v≦1, and −0.3≦d<1, Ma is a metal which is electrochemically inactive between 2 volts and 3.8 volts versus Na/Na Mb is different from Ma and Mn, and is at least one transition metal selected from elements of Groups 4 to 12 of the periodic table of the elements, and the sodium manganese composite oxide has at least one of a monoclinic structure and an orthrorhombic structure.