Positive electrode material for lithium secondary battery and preparation method thereof, positive electrode plate, secondary battery and use method thereof, and power consuming apparatus

A method for preparing a positive electrode material for a lithium secondary battery, being Method 1 or Method 2, wherein:

• the Method 1 comprises:
• mixing LixAsMn1-sP1-zEzO4 with LiyMOd, and performing roasting to acquire the positive electrode material for a lithium secondary battery;
• and
• the Method 2 comprises:
• mixing LixAsMn1-sP1-zEzO4 with any one of a lithium source and an M element source, and performing roasting to acquire an intermediate product;
• and
• mixing the intermediate product with the other one of the lithium source and the M element source, and performing roasting to acquire the positive electrode material for a lithium secondary battery;
• wherein:
• the positive electrode material for a lithium secondary battery comprises a core and a cladding layer cladding the core;
• the core comprises LixAsMn1-sP1-zEzO4, wherein 0<x≤1.1, 0<s≤1, 0≤z≤0.1, A comprises one or more elements of Ti, V, Zr, Fe, Ni, Mg, Co, Ga, Sn, Sb, Nb, and Ge, and E comprises one or more elements of B (boron), S, Si, and N;
• and
• the cladding layer comprises LiyMOd, wherein 1<y≤6, 1<d≤4, M comprises one or more elements of Ni, Co, Fe, Mn, Zn, Mg, Ca, Cu, Sn, Mo, Ru, Ir, V, Nb, and Cr, and a valence state of at least one metallic element in Mis lower than a highest oxidation valence state of M.