The present invention provides a positive electrode (2) active material containing a lithium-containing composite metal oxide having a composition represented by formula (1) given below: LiMgMPO (1) where M is at least one kind of an element selected from ...

A secondary battery of a proton conductive polymer, wherein a positive electrode 2 and a negative electrode 4 are arranged facing to each other via a separator in an electrolytic solution and only a proton in a π conjugated polymer or a proton of a hydrox...

Disclosed is a secondary battery in which the characteristic can be improved by optimizing the relation between the thickness of a positive electrode mixture layer and the thickness of a negative electrode mixture layer. The secondary battery comprises a r...

Disclosed is a nonaqueous electrolyte secondary battery, comprising a case (1) having a wall thickness (X) not larger than 0.3 mm, a positive electrode (6) provided in the case (1), a negative electrode (9) provided in the case (1) and the negative electro...

The aim of the invention is to further develop an accumulator of a conventional type such that the production is simplified and cheaper and making a connection with the connector poles leading from the accumulator may be achieved in a manner which is opera...

A lithium secondary battery including an anode and cathode containing an active material capable of incorporating and releasing lithium ions, wherein the cathode is a porous sintered material made of a lithium-transition metal oxide, the porosity of the si...