公开(公告)号：US10680449B2

公开(公告)日：2020-06-09

申请号：US15549891

申请日：2016-02-05

Applicant: KANEKA CORPORATION

Inventor： Mitsuyasu Imazaki

IPC: H02J7/00 ,  G01R31/385 ,  H01M10/44 ,  H01M4/13 ,  H01M10/46 ,  H01M10/48 ,  H01M10/0525 ,  H01M4/02

Abstract: A power storage device has a secondary battery which has a positive electrode, a negative electrode, and a nonaqueous electrolyte disposed between the positive and negative electrodes; in the secondary battery, metal ions are movable between the positive and negative electrodes through the nonaqueous electrolyte, and the positive and negative electrodes are charged/discharged when insertion/extraction reactions of the metal ions are carried out through the nonaqueous electrolyte; the positive and negative electrodes each contain an active-material layer with an average thickness of 0.3 mm or greater; the charging device is electrically connected to the secondary battery, and charges the secondary battery only at a constant current; and when the secondary battery is charged to its end-of-charge voltage by the charging device, its capacity is set to be 80% to 97% of the design capacity calculated from the inherent capacity per unit weight of the positive and negative electrodes.

公开(公告)号：US20240014451A1

公开(公告)日：2024-01-11

申请号：US18035598

申请日：2021-09-10

Applicant: KANEKA CORPORATION

Inventor： Mitsuyasu Imazaki ,  Junichi Imaizumi ,  Takashi Kikuchi ,  Masashi Tokizane

IPC: H01M10/42 ,  H01M10/0562 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/04 ,  C01G53/00 ,  C01B25/45

CPC classification number: H01M10/4235 ,  H01M10/0562 ,  H01M4/525 ,  H01M4/505 ,  H01M4/131 ,  H01M10/0525 ,  H01M4/0404 ,  C01G53/54 ,  C01B25/45 ,  H01M2300/0068 ,  H01M2004/021

Abstract: A positive electrode composite active material, a lithium ion secondary battery, a method for producing a positive electrode composite active material, a method for producing a lithium ion secondary battery, and a composite active material is provided. The positive electrode composite active material includes a positive electrode active material and an oxide-based solid electrolyte. The positive electrode active material is coated with the oxide-based solid electrolyte. The oxide-based solid electrolyte is represented by Li1+p+q+rAlpGaq(Ti,Ge)2−p−qSirP3−rO12 (0