| abstract |
The invention belongs to the technical field of lithium ion battery materials, and discloses a lithium transition metal oxide material coated with a fast ion conductor and a preparation method, the chemical formula of which is (1-x)Li 1+a (Ni (1-m-n ) Co n Mn m ) 1-b M b O 2 · xLic Al d Ti e M′ f M″ g (PO 4 ) 3 . The fast ion conductor-coated lithium transition metal oxides of the present invention under high voltage Especially when the charging voltage is greater than 4.62V, 4.65V, or higher, it has lower impedance, better cycle performance and safety performance. Lithium transition metal oxide can be obtained by primary sintering, and fast ion conductor package can be obtained by secondary sintering The final product of the coated lithium transition metal oxide material. |