公开(公告)号：US20200058959A1

公开(公告)日：2020-02-20

申请号：US16534690

申请日：2019-08-07

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Yusuke MORINO ,  Izaya OKAE ,  Nobuhiro INOUE ,  Kazumasa TAKESHI

IPC: H01M10/0567 ,  H01M10/0569 ,  H01M10/0568 ,  H01M10/0525 ,  C07C317/08 ,  C07C317/12 ,  C07C317/10 ,  C07D275/06 ,  C07D275/02

Abstract: A secondary battery includes a positive electrode, a negative electrode, and an electrolytic solution where (A) the electrolytic solution contains a solvent and an electrolyte salt, the solvent containing ethylene carbonate, (B) a content of the electrolyte salt is from 0.8 mol/kg to 2.0 mol/kg both inclusive, (C) a content of the ethylene carbonate in the solvent is from 10 wt % to 30 wt % both inclusive, (D) a ratio M2/M1 of a number M2 of moles of the ethylene carbonate to a number M1 of moles of the electrolyte salt is from 0.4 to 2.4 both inclusive, and (E) the electrolytic solution contains at least one of sulfone compounds.

公开(公告)号：US20230408445A1

公开(公告)日：2023-12-21

申请号：US18240220

申请日：2023-08-30

Applicant: NATIONAL UNIVERSITY CORPORATION KOBE UNIVERSITY ,  MURATA MANUFACTURING CO., LTD.

Inventor： Minoru MIZUHATA ,  Izaya OKAE

IPC: G01N27/60

CPC classification number: G01N27/60

Abstract: A method and a device are provided for measuring a zeta potential with reproducibility, high reliability and high accuracy, by predicting an equilibrium value from the change over time of a streaming potential. In measurement of the zeta potential of a sample surface using a streaming potential method, an external pressure is changed in a step-wise manner, and a pressure change profile is set having a rising part or a falling part which is of a shorter time than the relaxation time T required for response to a change in the streaming potential accompanying the change in external pressure, and a steady part in which pressure is held at a steady state for a time longer than the relaxation time T. An asymptotic value of the streaming potential extrapolated from the transient response of the streaming potential occurring from the pressure change profile is used to calculate the zeta potential.

公开(公告)号：US20190103631A1

公开(公告)日：2019-04-04

申请号：US16193012

申请日：2018-11-16

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Izaya OKAE ,  Kazumasa TAKESHI ,  Tadahiko KUBOTA

IPC: H01M10/0565 ,  H01M10/0569 ,  H01M10/42

Abstract: The secondary battery includes an electrolyte layer including an electrolytic solution and a polymer compound, a positive electrode, and a negative electrode. The polymer compound includes one or both of a first polymer compound and a second polymer compound. The first polymer compound further includes a first homopolymer and one or both of a second homopolymer and a second copolymer. The second polymer compound further includes a third copolymer and one or both of a fourth homopolymer and a fourth copolymer.