Lithium ion secondary battery

A lithium ion secondary battery comprising a positive electrode plate, a negative electrode plate, a separator and an electrolyte, wherein

• the positive electrode plate comprises a positive electrode current collector and a positive electrode film provided on at least one surface of the positive electrode current collector, and the positive electrode film comprises a first positive electrode active material represented by chemical formula (1) and a second positive electrode active material represented by chemical formula (2),
• Li1+xNiaCobMe1−a−bO2−yAy chemical formula (1)
• Li1+zMncN2−cO4−dBd chemical formula (2)
• in the chemical formula (1), −0.1≤x≤0.2, 0<a<1, 0<b<1, 0≤a+b<1, 0<y<0.2, Me comprises one or more of Mn, Fe, Cr, Ti, Zn, V, Al, Zr and Ce, and A comprises one or more of S, N, F, Cl, Br and I,
• in the chemical formula (2), −0.1≤z≤0.2, 0<c≤2, 0≤d<1, N comprises one or more of Ni, Fe, Cr, Ti, Zn, V, Al, Mg, Zr and Ce, and B comprises one or more of S, N, F, Cl, Br and I;
• the positive electrode plate has a resistivity r of 3500 n-m or less;
• and,
• the electrolyte comprises a fluorine-containing lithium salt type additive.