Negative electrode for lithium secondary battery, lithium secondary battery using same, and methods for manufacturing those

A method for manufacturing a lithium secondary battery comprising:

• A) forming a negative electrode active material layer on a separator by a gas-phase process so as to have island structure and to provide a groove opened to a side opposite to the separator, the groove having a wall surface, the negative electrode active material layer being capable of storing and emitting lithium ions and containing at least one selected from a group consisting of silicon, silicon alloys, compounds containing silicon and oxygen, compounds containing silicon and nitrogen, compounds containing silicon and fluorine, tin, tin alloys, compounds containing tin and oxygen, compounds containing tin and nitrogen, and compounds containing tin and fluorine;
• B) forming a current collector layer on the negative electrode active material layer, including on the wall surface of the groove, by a gas-phase process;
• C) providing a positive electrode on a side of the separator opposite to the negative electrode active material layer, the positive electrode being capable of storing and emitting lithium ions;
• and
• D) impregnating at least the separator with an electrolyte having a lithium-ion conductivity.