公开(公告)号：EP4439765A1

公开(公告)日：2024-10-02

申请号：EP22898558.6

申请日：2022-11-22

申请人： Nippon Electric Glass Co., Ltd. ,  National Institute of Advanced Industrial Science and Technology

发明人： TSUNODA, Kei ,  TANAKA, Ayumu ,  YAMAUCHI, Hideo ,  SAKAMOTO, Taichi ,  IKEUCHI, Yuta ,  MUKAI, Takashi ,  SENOH, Hiroshi

IPC分类号： H01M10/054 ,  H01M4/36 ,  H01M4/58 ,  H01M4/587 ,  H01M10/0565 ,  H01M10/0566

CPC分类号： Y02E60/10 ,  H01M10/0565 ,  H01M10/0566 ,  H01M10/054 ,  H01M4/36 ,  H01M4/58 ,  H01M4/587

摘要： Provided is a sodium-ion secondary battery having a high capacity and excellent safety. A sodium-ion secondary battery includes: a positive electrode containing a positive-electrode active material made of a crystallized glass containing crystals represented by a general formula NaxMyP2Oz (where 1 ≤ x ≤ 2.8, 0.95 ≤ y ≤ 1.6, 6.5 ≤ z ≤ 8, and M is at least one selected from among Fe, Ni, Co, Mn, and Cr) ; a negative electrode containing a negative-electrode active material made of hard carbon; and a non-aqueous electrolyte.

公开(公告)号：EP3528329A1

公开(公告)日：2019-08-21

申请号：EP17860387.4

申请日：2017-10-11

申请人： National Institute of Advanced Industrial Science and Technology ,  Sumitomo Seika Chemicals Co., Ltd.

发明人： IKEUCHI, Yuta ,  SAKAMOTO, Taichi ,  MUKAI, Takashi ,  YANAGIDA, Masahiro ,  FUJISHIGE, Junichi ,  KINNO, Masako ,  TAKAHASHI, Erina

IPC分类号： H01M10/052 ,  H01M2/16 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0566 ,  H01M10/0567

摘要： Provided are a lithium ion secondary battery in which heat generation is suppressed when the battery is internally short-circuited by an external impact, such as nail penetration or collapse, or short-circuited by foreign matter contamination or the like; and an electrical appliance using the battery. More specifically, the following lithium ion secondary battery and electrical appliance comprising the lithium ion secondary battery are provided. A lithium ion secondary battery comprising a positive electrode having a positive electrode active material layer on a current collector, a negative electrode having a negative electrode active material layer on a current collector, and a separator disposed between the positive electrode and the negative electrode and impregnated with a non-aqueous electrolyte solution, the positive electrode active material layer comprising a positive electrode active material and a binder, the negative electrode active material layer comprising a negative electrode active material and a binder, the binder of the negative electrode active material layer comprising a copolymer of vinyl alcohol and an alkali metal neutralized product of ethylenically unsaturated carboxylic acid, and the separator comprising a polymeric base material containing an inorganic compound or comprising a polymer having a melting point or glass transition temperature of 140°C or higher.

公开(公告)号：EP2782169B1

公开(公告)日：2020-02-19

申请号：EP12845609.2

申请日：2012-11-01

申请人： National Institute of Advanced Industrial Science and Technology ,  Isuzu Glass Ltd.

发明人： MUKAI, Takashi ,  SAKAMOTO, Taichi ,  IKEUCHI, Yuta ,  SAKAI, Tetsuo ,  TANI, Kunihiko ,  YAMASHITA, Naoto ,  IKEDA, Koichiro ,  YAMAGUCHI, Kiichiro

IPC分类号： H01M4/58 ,  H01M4/136 ,  H01M4/36 ,  H01M4/62 ,  H01M10/054 ,  H01M10/0568 ,  H01M10/0569