NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY AND METHOD FOR PRODUCING SAME

According to an embodiment, there is provided a non-aqueous electrolyte secondary battery (1) including a positive electrode (4), a negative electrode (5) including a negative electrode active material layer (5b), and a non-aqueous electrolyte. The negative electrode active material layer (5b) contains carbon dioxide and releases the carbon dioxide in the range of 0.1 ml to 5 ml per 1 g when heated at 200°C for 1 minute.