Publication number: 20190312262
Abstract: A nonaqueous electrolyte secondary battery including a positive electrode containing a positive electrode mixture, a negative electrode, and a nonaqueous electrolyte containing a nonaqueous solvent and a lithium salt dissolved in the nonaqueous solvent. The positive electrode mixture contains a positive electrode active material and a phosphate salt, the positive electrode active material contains a lithium-nickel composite oxide represented by formula (1): LixNi1-yM1yO2 (in the formula, 0.9?x?1.1, 0?y?0.7, and M1 is at least one element selected from the group consisting of Co, Mn, Fe, Ti, Al, Mg, Ca, Sr, Zn, Y, Yb, Nb, Cr, V, Zr, Mo, W, Cu, In, Sn, and As), and the nonaqueous solvent contains a trifluoropropionate ester represented by formula (2): F3C—CH2—CO—O—R1 (in the formula, R1 is a C1-3 alkyl group).
Type:
Application
Filed:
June 24, 2019
Publication date:
October 10, 2019
Applicant:
Panasonic Corporation
Inventors:
Naoya Morisawa, Takanobu Chiga, Kazuhiro Iida, Atsushi Fukui