公开(公告)号：US12206088B2

公开(公告)日：2025-01-21

申请号：US17296312

申请日：2019-10-31

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Kouhei Tsuzuki ,  Akihiko Takada ,  Yuki Morikawa ,  Hirokazu Wada ,  Katsunori Yanagida

IPC: H01M4/13 ,  H01M4/02 ,  H01M4/62

Abstract: A negative electrode for a nonaqueous electrolyte secondary battery, said negative electrode comprising a negative-electrode current collector, and a negative-electrode active material layer provided upon the negative-electrode current collector, wherein the negative-electrode active material layer includes a negative-electrode active material and a styrene-butadiene rubber, and the glass transition temperature (Tg) of the styrene-butadiene rubber in an area that extends 10% in the thickness direction from the surface of the reverse side of the negative-electrode active material layer from the negative-electrode current collector is higher than that of the styrene-butadiene rubber in an area that extends 10% in the thickness direction from the surface of the negative-electrode current collector side of the negative-electrode active material layer.

公开(公告)号：US10892472B2

公开(公告)日：2021-01-12

申请号：US16471134

申请日：2017-12-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki Morikawa ,  Yasunori Baba ,  Takashi Ko ,  Fumiharu Niina ,  Katsunori Yanagida

IPC: H01M4/131 ,  H01M4/133 ,  H01M4/525 ,  H01M4/587 ,  H01M10/0525 ,  H01M4/505 ,  H01M10/0567 ,  H01M4/62 ,  H01M4/485 ,  H01M4/13 ,  H01M10/052 ,  H01M4/36

Abstract: A non-aqueous electrolyte secondary battery which uses a lithium titanium composite oxide as a negative electrode active material is configured to use a first positive electrode active material that is a Co-containing lithium transition metal oxide and has a volume per mass of 8 mm3/g or more with respect to pores having a pore diameter of 100 nm or less and a second positive electrode active material that has a volume per mass of 5 mm3/g or less with respect to pores having a pore diameter of 100 nm or less.

公开(公告)号：US20200243827A1

公开(公告)日：2020-07-30

申请号：US16637034

申请日：2018-11-02

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yuki Morikawa ,  Masanori Sugimori ,  Yasunori Baba ,  Katsunori Yanagida ,  Nobuhiro Hirano

IPC: H01M2/16 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/66 ,  H01M4/36 ,  H01M4/131

Abstract: In a nonaqueous electrolyte secondary battery, a separator includes a substrate, a first filler layer disposed on one side of the substrate and containing phosphate salt particles, and a second filler layer disposed on the other side of the substrate and containing inorganic particles. The separator is disposed between a positive electrode and a negative electrode in such a manner that the side of the substrate which bears the first filler layer is directed to the positive electrode side.