CYLINDRICAL NON-AQUEOUS ELECTROLYTE SECONDARY CELL
Provided is a secondary battery in which corrosion of an exterior body is stably suppressed. A non-aqueous electrolyte secondary battery according to an embodiment of the present disclosure comprises: an exterior body having a bottomed cylindrical shape and having a grooving portion in an opening portion; an electrode body and a non-aqueous electrolyte housed in the exterior body; and a sealing body caulked and fixed between the grooving portion and an opening end in the opening, wherein in a portion from the grooving portion of the inner surface of the exterior body to the open end portion, a powder of at least one among compounds selected from the group consisting of hydroxides, oxides, and carbonates is present.
1 . A cylindrical non-aqueous electrolyte secondary battery comprising:
a cylindrical outer housing having a bottom, the outer housing including an opening portion having a groove portion;
an electrode assembly and a non-aqueous electrolyte contained in the outer housing; and
a sealing structure caulked and fixed between the groove portion and an opening end in the opening portion, wherein
a region of an inner surface of the outer housing between the groove portion and the opening end includes powder of one or more compounds selected from a group consisting of hydroxide, oxide, and carbonate.
2 . The cylindrical non-aqueous electrolyte secondary battery according to claim 1 , wherein
(molecular weight)/(total number of valences of cation) of the compounds is less than or equal to 60.
3 . The cylindrical non-aqueous electrolyte secondary battery according to claim 1 , wherein
the compounds comprise any of aluminum hydroxide, magnesium hydroxide, aluminum oxide, magnesium oxide, lithium carbonate, or sodium carbonate.