| abstract |
A negative electrode and a battery capable of improving long-term stability, and a method for producing the same are provided. Kind Code: A1 A negative electrode comprises a diffusion preventing layer, a negative electrode current collector layer, and a negative electrode active material layer formed on a film forming substrate made of plastic or the like by a dry film forming method or a wet film forming method. 21D. The diffusion prevention layer 21B is made of Ti or Ta, and suppresses diffusion of Li into the film-forming base 21A, thereby preventing breakage of the film-forming base 21A or peeling of the negative electrode current collector layer 21C. Therefore, the long-term stability of the negative electrode 21 can be improved, and the negative electrode 21 can be made thinner and the surface flatness can be improved. [Selection diagram] Fig. 1 |