Patent ID: 9728769
Date: 2017-08-08
CPC Classifications: H01M,Y02E,Y02P

Claim:
1. A method of manufacturing a multi-layer electrode used for a secondary battery, the method comprising: a process of sequentially spraying two or more suspension liquids containing an active material and solvent, wherein the suspension liquids are not required to be a same composition, onto a base material to form a multi-layer electrode comprising two or more layers, wherein the process of forming the multi-layer electrode comprises: a process of spraying a first suspension liquid onto a surface having a predetermined temperature and evaporating a solvent in the first suspension liquid at the predetermined temperature in order to form a primary electrode layer, wherein the surface having the predetermined temperature is a surface of the base material or an existing electrode layer provided on the base material; and a process of spraying a second suspension liquid onto a second surface having a temperature adjusted to a second temperature higher than the predetermined temperature and evaporating a solvent in the second suspension liquid at the second temperature in order to form a subordinate electrode layer more distal than the primary electrode layer with respect to the base material, wherein the second surface having the second temperature is a surface of the primary electrode layer or another electrode layer.