Negative electrode active material of lithium secondary battery, negative electrode of lithium secondary battery, lithium secondary battery for vehicle installation using the negative electrode active material and negative electrode, and method for manufacturing the negative electrode active material

摘要

A negative electrode active material of lithium secondary battery include: at least one of a petroleum-derived green coke and a coal-derived green coke, and at least one of a petroleum-derived calcined coke and a coal-derived calcined coke within a mass ratio range of 90:10 to 10:90; a phosphorous compound within a range of 0.1 to 6.0 parts by mass in amount equivalent to phosphor relative to 100 parts by mass of the at least one of the green cokes and the at least one of the calcined cokes; and a boron compound within a range of 0.1 to 6.0 parts by mass in amount equivalent to boron relative to 100 parts by mass of the at least one of the green cokes and the at least one of the calcined cokes.

主权项

1. A negative electrode active material of lithium secondary battery, comprising:
coke comprising at least one green coke and at least one calcined coke, the green coke and the calcined coke being present in a mass ratio of 90:10 to 10:90, the green coke comprising one or more selected from the group consisting of a petroleum-derived green coke and a coal-derived green coke, and the calcined coke comprising one or more selected from the group consisting of a petroleum-derived calcined coke and a coal-derived calcined coke; a phosphorous compound comprising phosphorous, the phosphorous and the coke being present in a ratio of 0.1:100 to 6.0:100 parts by mass; and a boron compound comprising boron, the boron and the coke being present in a ratio of 0.1:100 to 6.0:100 parts by mass.