| abstract |
It consists of a positive electrode and a negative electrode capable of occluding and releasing lithium, a separator and a non-aqueous electrolyte interposed therebetween, and the positive electrode satisfies LiM 1-x L x O 2 (0.005 ≦ x ≦ 0.1, M is at least one selected from the group consisting of Mn, Co and Ni, L is Mg, Al, Ti, Sr, Zn, B, Ca, Cr, Si, Ga, Sn, P, V, Sb, Nb, Ta, Mo, W, Zr, Y and at least one selected from the group consisting of Fe) and a non-aqueous electrolyte, A non-aqueous electrolyte secondary battery including a phosphinate compound represented by (R 1 , R 2 and R 3 are each independently an aryl group or an alkyl group, alkenyl group or alkynyl group having 1 to 5 carbon atoms). |