All-solid-state lithium ion secondary battery and manufacturing method of all-solid-state lithium ion secondary battery

A manufacturing method of an all-solid-state lithium ion secondary battery including at least one or more of the laminates in which a positive electrode layer, a solid electrolyte layer, and a negative electrode layer are arranged in this order, the manufacturing method comprising:

• manufacturing the laminate of the positive electrode layer, the solid electrolyte layer, and the negative electrode layer at 300° C. or lower in an atmosphere containing oxygen gas,
• wherein at least one of the positive electrode layer or the negative electrode layer includes a collector layer,
• at least one collector layer is a layer having Cu as a constitutional material or a layer having Cu in a coating layer, and
• the solid electrolyte layer contains an amorphous solid electrolyte which contains a lithium-containing oxide containing Li, B, and O, water, and a lithium salt, and in the amorphous solid electrolyte, a value of a ratio of a content of the lithium salt to a content of the lithium-containing oxide is 0.001 to 1.5 in terms of a molar ratio, and a value of a ratio of a content of the water to the content of the lithium-containing oxide is 1 to 12 in terms of a molar ratio.