公开(公告)号：US10991984B2

公开(公告)日：2021-04-27

申请号：US15008487

申请日：2016-01-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Toru Itakura ,  Kyosuke Ito ,  Rie Yokoi ,  Jun Ishikawa

IPC: H01M10/0569 ,  H01M10/0568 ,  H01M10/052 ,  C25D3/44 ,  C07C275/02 ,  C07C275/06 ,  C25D3/66 ,  C07C233/05

Abstract: A nonaqueous electrolyte of the present invention includes an ionic liquid including a first alicyclic quaternary ammonium cation having one or more substituents, a second alicyclic quaternary ammonium cation having an alicyclic skeleton that is the same as an alicyclic skeleton of the first alicyclic quaternary ammonium cation, and a counter anion to the first alicyclic quaternary ammonium cation and the second alicyclic quaternary ammonium cation and an alkali metal salt. In the second alicyclic quaternary ammonium cation, one of substituents bonded to a nitrogen atom in the alicyclic skeleton is a substituent including a halogen element. In the ionic liquid, the amount of a salt including the second alicyclic quaternary ammonium cation is less than or equal to 1 wt % per unit weight of the ionic liquid, or is less than or equal to 0.8 wt % per unit weight of the nonaqueous electrolyte.

公开(公告)号：US10128541B2

公开(公告)日：2018-11-13

申请号：US15792994

申请日：2017-10-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Toru Itakura ,  Kyosuke Ito ,  Jun Ishikawa ,  Rie Yokoi

IPC: H01M4/587 ,  H01M10/0525 ,  H01M10/0569 ,  H01M4/58 ,  H01M4/62 ,  H01G11/06 ,  H01G11/62 ,  H01M2/16 ,  H01M4/133 ,  H01M4/136 ,  H01M4/66 ,  H01M10/0568 ,  H01M10/0585 ,  H01G11/32 ,  H01G11/50 ,  H01G11/60 ,  H01G11/84 ,  H01M4/04 ,  H01M4/1397 ,  H01M4/02

Abstract: A power storage device with reduced initial irreversible capacity is provided. The power storage device includes a positive electrode including a positive electrode current collector and a positive electrode active material layer, a negative electrode including a negative electrode current collector and a negative electrode active material layer, and an electrolyte solution. In the negative electrode active material layer, the content percentage of a carbon material with an R value of 1.1 or more is less than 2 wt %. The R value refers to a ratio of a peak intensity I1360 to a peak intensity I1580 (I1360/I1580). The peak intensity I1360 and the peak intensity I1580 are observed by Raman spectrometry at a Raman shift of 1360 cm−1 and a Raman shift of 1580 cm−1, respectively. The electrolyte solution contains a lithium ion and an ionic liquid composed of an organic cation and an anion.

公开(公告)号：US09583276B2

公开(公告)日：2017-02-28

申请号：US14918830

申请日：2015-10-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyosuke Ito ,  Toru Itakura

IPC: H01M6/04 ,  H01G11/04 ,  C07D207/06 ,  H01M10/052 ,  H01M10/0569 ,  H01G11/06 ,  H01G11/62 ,  C07C309/06 ,  C07C311/48 ,  H01G11/52 ,  H01G11/60 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  C07C309/06 ,  C07C311/48 ,  C07D207/06 ,  H01G11/04 ,  H01G11/06 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0017 ,  H01M2300/0028 ,  H01M2300/0045 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. In the general formula (G0), R0 to R5 are individually any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, a methoxyethyl group, and a hydrogen atom, and A− is a univalent imide-based anion, a univalent methide-based anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate, or hexafluorophosphate.

Abstract translation: 具有高电化学稳定性和低熔点的离子液体。 提供由以下通式（G0）表示的离子液体。 在通式（G0）中，R 0〜R 5分别是碳原子数1〜20的烷基，甲氧基，甲氧基甲基，甲氧基乙基和氢原子中的任一个，A-为单价酰亚胺 - 单价甲基化阴离子，全氟烷基磺酸阴离子，四氟硼酸盐或六氟磷酸盐。

公开(公告)号：US09171677B2

公开(公告)日：2015-10-27

申请号：US14600135

申请日：2015-01-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyosuke Ito ,  Toru Itakura

IPC: H01M6/04 ,  H01G11/06 ,  C07D207/06 ,  H01M10/052 ,  H01M10/0569 ,  H01G11/62 ,  C07C309/06 ,  C07C311/48 ,  H01G11/52 ,  H01G11/60 ,  H01M10/0525

CPC classification number: H01M10/0569 ,  C07C309/06 ,  C07C311/48 ,  C07D207/06 ,  H01G11/04 ,  H01G11/06 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0017 ,  H01M2300/0028 ,  H01M2300/0045 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

Abstract: An ionic liquid having high electrochemical stability and a low melting point. An ionic liquid represented by the following general formula (G0) is provided. In the general formula (G0), R0 to R5 are individually any of an alkyl group having 1 to 20 carbon atoms, a methoxy group, a methoxymethyl group, a methoxyethyl group, and a hydrogen atom, and A− is a univalent imide-based anion, a univalent methide-based anion, a perfluoroalkyl sulfonic acid anion, tetrafluoroborate, or hexafluorophosphate.

Abstract translation: 具有高电化学稳定性和低熔点的离子液体。 提供由以下通式（G0）表示的离子液体。 在通式（G0）中，R 0〜R 5分别是碳原子数1〜20的烷基，甲氧基，甲氧基甲基，甲氧基乙基和氢原子中的任一个，A-为单价酰亚胺 - 单价甲基化阴离子，全氟烷基磺酸阴离子，四氟硼酸盐或六氟磷酸盐。