公开(公告)号：US12266827B2

公开(公告)日：2025-04-01

申请号：US17261111

申请日：2019-04-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Keiko Kosuge ,  Fumio Kato ,  Toshiyuki Shimizu ,  Yusuke Kawahara

IPC: H01M6/16 ,  H01M4/06 ,  H01M4/131 ,  H01M4/134 ,  H01M4/36 ,  H01M4/40 ,  H01M4/505 ,  H01M50/107

Abstract: A lithium primary cell includes an electrode group and a non-aqueous electrolytic solution. The electrode group includes a positive electrode, a negative electrode, and a separator, in which the positive electrode and the negative electrode are wound with the separator interposed therebetween. In the electrode group, an area where the positive electrode and the negative electrode face each other is 250 cm2 or more and 350 cm2 or less. The positive electrode includes a positive electrode mixture including manganese dioxide and a boron compound. The negative electrode includes lithium metal or a lithium alloy. The non-aqueous electrolytic solution includes ethylene carbonate. A content of the boron compound in the positive electrode is 0.5 parts by mass or more and 2 parts by mass or less in terms of boron with respect to 100 parts by mass of the positive electrode mixture. A content of the ethylene carbonate in the non-aqueous electrolytic solution is 1 part by mass or more and 10 parts by mass or less with respect to 100 parts by mass of the manganese dioxide.

公开(公告)号：US11329268B2

公开(公告)日：2022-05-10

申请号：US16497580

申请日：2018-02-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Miyuki Nakai ,  Yasuyuki Kusumoto ,  Yusuke Kawahara ,  Futoshi Tanigawa ,  Atsushi Fukui

IPC: H01M4/06 ,  H01M4/50 ,  H01M4/62 ,  H01M6/16 ,  H01M4/02

Abstract: A positive electrode, a negative electrode containing lithium, and a nonaqueous electrolyte having lithium ion conductivity are installed. The nonaqueous electrolyte contains a nonaqueous solvent and a solute. The positive electrode contains a positive electrode active material containing at least manganese dioxide, a conductive agent, and a binding agent and further contains an oxide and sulfate of a rare-earth element.

公开(公告)号：US20210104725A1

公开(公告)日：2021-04-08

申请号：US16497580

申请日：2018-02-14

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Miyuki Nakai ,  Yasuyuki Kusumoto ,  Yusuke Kawahara ,  Futoshi Tanigawa ,  Atsushi Fukui

IPC: H01M4/06 ,  H01M4/50 ,  H01M6/16 ,  H01M4/62

Abstract: A positive electrode, a negative electrode containing lithium, and a nonaqueous electrolyte having lithium ion conductivity are installed. The nonaqueous electrolyte contains a nonaqueous solvent and a solute. The positive electrode contains a positive electrode active material containing at least manganese dioxide, a conductive agent, and a binding agent and further contains an oxide and sulfate of a rare-earth element.