NEGATIVE-ELECTRODE ACTIVE MATERIAL FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

摘要

The purpose of the invention is to improve initial charge/discharge efficiency and cycle characteristics in a non-aqueous electrolyte secondary battery employing a silicon material as a negative-electrode active material. A negative-electrode active material particle (10), which is an example of an embodiment, comprises: a lithium silicate phase (11) represented by Li2zSiO(2+z) (0