High-compacted-density positive electrode material and electrochemical energy storage apparatus
摘要
說(shuō)明書
A first aspect of this application provides a positive electrode material, where the positive electrode material includes a lithium-nickel transition metal oxide A and a lithium-nickel transition metal oxide B, the lithium-nickel transition metal oxide A is secondary particles, and a chemical formula of the lithium-nickel transition metal oxide A is shown in Formula I: Lia1(Nib1Coc1Mnd1)x1M1-x1O2-e1Xe1??(I)
In Formula I, 0.95≤a1≤1.05, 0.7≤b1≤0.98, 0.01≤c1≤0.15, 0.01≤d1≤0.3, 0.95≤x1≤1, and 0≤e1≤0.1, where M is selected from any one or a combination of Al, Ti, Zr, Nb, Sr, Sc, Sb, Y, Ba, B, C, Co, and Mn, and X is selected from F and/or Cl;
the lithium-nickel transition metal oxide B is monocrystalline or monocrystalline-like particles, and a chemical formula of the lithium-nickel transition metal oxide B is shown in Formula II: Lia2(Nib2Coc2Mnd2)x2M′1-x2O2-e2X′e2??(II)
In Formula II, 0.95≤a2≤1.05, 0.7≤b2≤0.98, 0.01≤c2≤0.15, 0.01≤d2≤0.3, 0.95≤x2≤1, and 0≤e2≤0.1, where M′ is selected from any one or a combination of Al, Ti, Zr, Nb, Sr, Sc, Sb, Y, Ba, B, C, Co, and Mn, and X′ is selected from F and/or Cl; and
