Negative electrode for nonaqueous secondary battery and process of producing the same

A negative electrode for a nonaqueous secondary battery, comprising:

• a pair of current collecting surface layers comprising a metallic material having low capability of forming a lithium compound and an active material layer between the current collecting surface layers,
• at least one of the current collecting surface layers having a number of micropores open on the surface thereof, extending in the thickness direction thereof and being penetrable to a nonaqueous electrolyte,
• the active material layer containing a particulate active material which has high capability of forming a lithium compound and in which lithium is intercalated,
• the active material layer having a metallic material having low capability of forming a lithium compound penetrating through the whole thickness thereof, and
• the negative electrode having no electro-conductive metal foil layer as a core.

A negative electrode for a nonaqueous secondary battery, comprising:

• a pair of current collecting surface layers comprising a metallic material having low capability of forming a lithium compound;
• and
• an active material layer between the current collecting surface layers,
• at least one of the current collecting surface layers having a number of micropores open on the surface thereof, extending in the thickness direction thereof and being penetrable to a nonaqueous electrolyte,
• the active material layer containing a particulate active material which has high capability of forming a lithium compound, and the active material layer in an uncharged state being intercalated with lithium,
• the active material layer having a metallic material having low capability of forming a lithium compound penetrating through the whole thickness thereof, and
• the negative electrode having an electro-conductive metal foil layer as a core.