| abstract |
The invention discloses a high-nickel layered oxide material for sodium ion batteries and a preparation method and application thereof. The general chemical formula of the high-nickel layered oxide material for sodium ion batteries is Na x Ni a Fe b Mn c M d 0 2 ±δ ; wherein Ni, Fe, Mn are transition metal elements, and M is an element substituted for the transition metal site; in the structure of the oxide material, the ions of the transition metal site and the adjacent six oxygens form an octahedral structure, And alternately arranged with octahedral NaO 6 layers to form an O3-type high nickel layered oxide material for Na-ion batteries with space group R-3m; M specifically includes Li + , Mg 2+ , Ca 2+ , Cu 2+ , Zn 2+ , Al 3+ , B 3+ , Co 3+ , V 3+ , Y 3+ , Ti 4+ , Zr 4+ , Sn 4+ , Mo 4+ , Si 4+ , Ru 4 One or more of + , Nb 5+ , Sb 5+ , Mo 5+ , Mo 6+ , W 6+ ; x, a, b, c, d and 2+δ are the moles occupied by the corresponding elements, respectively Percentage, each component in the general chemical formula satisfies charge conservation and stoichiometric conservation, and 0.67≤x≤1, 0.5≤a<1, 0.01≤b≤0.35, 0.01≤c≤0.35, 0≤d≤0.3, 0≤ δ≤0.1. |