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AssigneeNippondenso Co., Ltd.
InventorsHirofumi Isoyama, Satoru Suzuki, Jun Hasegawa, Hirohiko Saito, Hisano Kojima
Estimating the term…
In order to improve the charge-discharge energy density of a lithium secondary cell with a nonaqueous electrolyte having such a construction that a metallic compound capable of occluding or releasing lithium is used as an electrode active material, lithium or a lithium alloy is used as a negative electrode material and a solution of a lithium salt is used as an electrolyte, the microstructure of the metallic compound is rendered acicular. Further, a lithium-containing metallic compound grown into such a columnar form that has the angle .THETA. to the normal of the surface of the substrate of 0.degree..ltoreq..THETA.<90.degree. is used as the electrode active material.
A lithium secondary cell comprising a positive electrode, a negative electrode facing said positive electrode and a nonaqueous electrolyte interposed between said positive electrode and said negative electrode, wherein a metallic compound capable of occluding or releasing lithium is used as an electrode active material, said metallic compound having an acicular microstructure.
A lithium secondary cell comprising a positive electrode, a negative electrode facing said positive electrode and a nonaqueous electrolyte interposed between said positive electrode and said negative electrode, wherein a metallic compound capable of occluding or releasing lithium is used as an electrode active material, said electrode active material comprising a lithium-containing metal oxide grown into such a columnar form that the angle .THETA. of a conductive substrate to the normal of the surface of said substrate is 0.degree..ltoreq..THETA.<90.degree..
Dependencies are inferred from the claim text.