公开(公告)号：US20240396045A1

公开(公告)日：2024-11-28

申请号：US18201197

申请日：2023-05-24

Applicant: TDK Corporation

Inventor： Takashi MOURI ,  Rie IHARA

IPC: H01M4/62 ,  H01M4/134 ,  H01M4/38 ,  H01M10/0525

Abstract: This lithium-ion secondary battery may have a positive electrode, a negative electrode, a separator present between the positive electrode and the negative electrode and an electrolytic solution. The negative electrode may contain silicon or a silicon compound and a binder, and the binder may contain polyimide. When the negative electrode after discharging is observed by nuclear magnetic resonance (NMR) spectroscopy using a single-pulse magic-angle spinning method (SP-MAS method) and peaks are separated by a Gaussian function, a Lorentzian function or a Voigt function, an NMR spectrum of a solid7 Li nucleus may have a first peak, and the first peak may have a peak top in a chemical shift range of 0.5 ppm or more and 1.5 ppm or less with Li in LiCoO2 set to −0.5 ppm.

公开(公告)号：US20170276657A1

公开(公告)日：2017-09-28

申请号：US15467272

申请日：2017-03-23

Applicant: TDK CORPORATION

Inventor： Tomohiko KATO ,  Takayuki MARUYAMA ,  Rie IHARA

IPC: G01N33/00 ,  H01G11/06 ,  H01M10/48 ,  H01G11/58 ,  H01M10/0525 ,  H01M10/42

CPC classification number: G01N33/0047 ,  G01N33/0054 ,  H01G11/06 ,  H01G11/20 ,  H01G11/54 ,  H01G11/58 ,  H01G11/82 ,  H01M10/0525 ,  H01M10/4228 ,  H01M10/488 ,  Y02A50/246 ,  Y02E60/13

Abstract: A gas detection sheet wherein a porous coordination polymer represented by formula (1) is supported on a supporter and the air permeability of the gas detection sheet is 0.8 seconds or more and 60 seconds or less. Fex(pz)[Ni1-yMy(CN)4]  (1) (wherein, pz=pyrazine, 0.95≦x