NEGATIVE ELECTRODE FOR NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NONAQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide: a negative electrode which enables the rise in battery capacity, and the enhancement in cycle characteristics and initial charge and discharge characteristics; and a nonaqueous electrolyte secondary battery having such a negative electrode.SOLUTION: A negative electrode for a nonaqueous electrolyte secondary battery comprises: a silicon compound (SiO: 0.5≤x≤1.6) containing a Li compound as a negative electrode active material; and a cellulose ether compound. The cellulose ether compound has an etherification degree of 0.6-1.5, and an average polymerization degree of 500-1800, of which the 1%-aqueous solution is pH 7.1-12.5 at 25°C.SELECTED DRAWING: Figure 1