NEGATIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY AND METHOD FOR MANUFACTURING THE SAME, AND NEGATIVE ELECTRODE FOR LITHIUM SECONDARY BATTERY USING THE SAME, AND LITHIUM SECONDARY BATTERY

摘要

PPROBLEM TO BE SOLVED: To provide a negative electrode material which is inexpensively produced and allows production of a lithium secondary battery excellent in various battery properties in a balanced manner even when used at a high electrode density. PSOLUTION: A graphite powder is used having a tap density of not less than 0.80 g/cmSP3/SPand not more than 1.35 g/cmSP3/SP, a surface functional group amount, O/C value, of not less than 0 and not more than 0.01, a BET specific surface area of not less than 2.5 mSP2/SP/g and not more than 7.0 mSP2/SP/g, and a Raman R-value of not less than 0.02 and not more than 0.05. PCOPYRIGHT: (C)2011,JPO&INPIT