| 摘要 |
PURPOSE: An anode and a secondary battery are provided to suppress a thickness and to prevent separation of a negative active material layer during charge and discharge. CONSTITUTION: A secondary battery includes a positive electrode(21), a negative electrode(22), and electrolyte. The negative electrode includes a negative active material layer(22B) on a negative collector. The negative active material layer has a plurality of pores. The negative active material layer includes a negative active material and a negative binder. The change rate of invasion amount of mercury is measured by a mercury intrusion method. |
