| abstract |
An object of the present invention is to provide a lithium secondary battery in which a high voltage of 3 V or more is obtained using a safe aqueous electrolyte solution without the risk of fire or explosion. n In order to achieve the above object, the battery of the present invention includes a positive electrode composed of an active material material exhibiting a high potential by occluding and releasing lithium ions, a negative electrode composed of an active material material exhibiting a low potential, a lithium ion conductive polymer solid electrolyte, and an aqueous solution system. It is comprised using electrolyte solution, The said positive electrode and negative electrode are coat | covered with the ion conductive polymer solid electrolyte, and it is isolate | separated by the said electrode coating layer between aqueous solution type electrolyte solution. |