Non-aqueous electrolyte secondary battery and method of manufacturing negative electrode thereof

1. A method of manufacturing a negative electrode, the method comprising:

a first step of forming a plurality of columnar active material blocks capable of electrochemically storing and releasing lithium ions on a surface of a current collector;

a second step of producing particulate lithium by vapor deposition; and

a third step of disposing the particulate lithium produced in the second step in gaps between the active material blocks,

wherein, in the third step, a liquid dispersion in which the particulate lithium is dispersed in a dispersing medium is applied to the current collector having the active material blocks, and the applied liquid dispersion is dried.

2. A method of manufacturing a negative electrode, the method comprising:

a first step of forming a plurality of columnar active material blocks capable of electrochemically storing and releasing lithium ions on a surface of a current collector;

a second step of producing particulate lithium having a diameter of 0.3 to 15 μm by vapor deposition; and

a third step of disposing the particulate lithium produced in the second step in gaps between the active material blocks by a liquid dispersion in which the particulate lithium is dispersed,

wherein a lithium carbonate layer is formed on a surface of the particulate lithium before the particulate lithium is disposed in the gaps between the active material blocks.

3. The method of manufacturing a negative electrode according to claim 2 ,

wherein the particulate lithium on which the lithium carbonate layer is formed contains lithium at 99% or more.

4. The method of manufacturing a negative electrode according to claim 2 , wherein the particulate lithium produced in the second step has a diameter of 0.3 to 15 μm.