公开(公告)号：US20140099558A1

公开(公告)日：2014-04-10

申请号：US14046104

申请日：2013-10-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Toru ITAKURA ,  Kyosuke ITO ,  Jun ISHIKAWA ,  Rie YOKOI

IPC: H01M4/587 ,  H01M10/0525 ,  H01M10/0569

CPC classification number: H01M10/0569 ,  H01G11/06 ,  H01G11/32 ,  H01G11/50 ,  H01G11/60 ,  H01G11/62 ,  H01G11/84 ,  H01M2/162 ,  H01M2/1653 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/136 ,  H01M4/1397 ,  H01M4/5825 ,  H01M4/587 ,  H01M4/621 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0585 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0034 ,  H01M2300/0045 ,  Y02E60/122 ,  Y02E60/13 ,  Y02T10/7011 ,  Y02T10/7022

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.

Abstract translation: 提供了具有降低的初始不可逆容量的蓄电装置。 蓄电装置具备包括正极集电体和正极活性物质层的正极，负极集电体和负极活性物质层的负极以及电解液。 在负极活性物质层中，R值为1.1以上的碳材料的含有率小于2重量％。 R值是指峰强度I1360与峰值强度I1580（I1360 / I1580）的比。 通过拉曼光谱测定，在1360cm -1的拉曼位移和1580cm -1的拉曼位移分别观察峰强度I1360和峰强度I1580。 电解质溶液含有锂离子和由有机阳离子和阴离子组成的离子液体。

公开(公告)号：US20130164610A1

公开(公告)日：2013-06-27

申请号：US13719542

申请日：2012-12-19

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Toru ITAKURA ,  Kyosuke Ito ,  Rie Yokoi (Matsubara) ,  Jun Ishikawa

IPC: H01M10/0569 ,  H01M10/052

CPC classification number: H01M10/0569 ,  H01M10/052 ,  H01M10/0568 ,  H01M2300/0045 ,  Y02E60/122

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.

Abstract translation: 本发明的非水电解质包括具有一个以上取代基的第一脂环季铵阳离子的离子液体，具有与第一脂环族季铵阳离子的脂环族骨架相同的脂环族骨架的第二脂环族季铵阳离子， 和第一脂环季铵阳离子和第二脂环族季铵阳离子的抗衡阴离子和碱金属盐。 在第二脂环季铵阳离子中，与脂环族骨架中的氮原子结合的取代基之一是包含卤素元素的取代基。 在离子液体中，包含第二脂环族季铵阳离子的盐的量为每单位离子液体重量的1重量％以下，或小于等于0.8重量％，每单位重量的非水性 电解液