Patent ID: 9640799
Date: 2017-05-02
CPC Classifications: H01M,Y02E

Claim:
1. A negative electrode active material for a non-lithium secondary battery, the negative electrode active material comprising a complex comprising: a hard carbon having a specific surface area of about 50 square meters per gram or less and a ratio of a D-band peak intensity to a G-band peak intensity of about 1 or less when analyzed by Raman spectroscopy; and a component comprising at least one selected from a Group 1 element, an oxide of a Group 1 element, a Group 2 element, an oxide of a Group 2 element, an element of Groups 13 to 16, an oxide of an element of Groups 13 to 16, and an oxide of an element of Groups 3 to 12; wherein an average particle diameter of the hard carbon is in a range of about 1 nanometer to about 10 nanometers.