An all solid state battery comprising: (a) a positive electrode current
collector layer, (b) a positive electrode active material layer carried
on the positive electrode current collector layer, (c) a negative
electrode current collector layer, (d) a negative electrode active
material layer carried on the negative electrode current collector layer,
(e) a solid electrolyte layer interposed between the positive and
negative electrode active material layers, and (f) a substrate carrying
either of the positive and negative electrode current collector layers,
the substrate comprising a metal sheet and a coating layer covering the
surface of the metal sheet, the coating layer comprising at least one
metal nitride layer.