Sodium-based electrode active material and secondary battery comprising same
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United States of America Patent
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Mar 2, 2021
Grant Date -
Jul 4, 2019
app pub date -
Apr 12, 2017
filing date -
Apr 12, 2016
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Abstract
A sodium-based electrode active material and a secondary battery comprising the same are provided. The electrode active material is represented by the following Chemical Formula 1, and has an orthorhombic crystal system and a space group of Cmcm. [Chemical Formula 1] Nax[Mn1-y-zM1yM2z]O2-αAα. In Chemical Formula 1, x may be 0.5 to 0.8. M1 and M2 may be, regardless of each other, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Nd, Mo, Tc, Ru, Rh, Pd, Pb, Ag, Cd, Al, Ga, In, Sn, or Bi. y may be from 0 to 0.25. z may be from 0 to 0.25. A may be N, O, F, or S, and α may be 0 to 0.1.
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