公开(公告)号：US20180212235A1

公开(公告)日：2018-07-26

申请号：US15925576

申请日：2018-03-19

Applicant: NEC Corporation

Inventor： Tetsuya KAJITA ,  Jiro IRIYAMA ,  Shin SERIZAWA

IPC: H01M4/36 ,  H01M4/38 ,  H01M2/02 ,  H01M4/04 ,  H01M4/131 ,  H01M4/134 ,  H01M10/0569 ,  H01M10/052 ,  H01M4/485 ,  H01M4/48 ,  H01M4/1395 ,  H01M4/1391 ,  H01M4/62 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M2/0202 ,  H01M2/0237 ,  H01M2/0267 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/1395 ,  H01M4/366 ,  H01M4/386 ,  H01M4/48 ,  H01M4/485 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0569 ,  H01M2004/027 ,  H01M2220/20 ,  H01M2220/30 ,  H01M2300/0028

Abstract: Provided are a lithium secondary battery wherein gas generation associated with charging and discharging can be suppressed even in case where silicon and silicon oxide are contained as negative electrode active materials, and wherein deformation due to the gas generation can be suppressed even in case where a resin film is used as an outer package; and a method for manufacturing the lithium secondary battery. A lithium secondary battery comprises a negative electrode containing a negative electrode active material, a positive electrode containing a positive electrode active material, and an electrolytic solution used to immerse the negative electrode active material and the positive electrode active material, wherein the negative electrode active material contains silicon and silicon oxide that have been subjected to a reduction treatment.

公开(公告)号：US20160133935A1

公开(公告)日：2016-05-12

申请号：US14895586

申请日：2014-06-03

Applicant: NEC CORPORATION

Inventor： Tetsuya KAJITA ,  Shin SERIZAWA

IPC: H01M4/62 ,  H01M4/583 ,  C08L77/06 ,  B29B7/00 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/40 ,  H01M4/60

CPC classification number: H01M4/622 ,  B29B7/002 ,  C08G73/10 ,  C08L77/06 ,  H01M4/0404 ,  H01M4/0471 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1393 ,  H01M4/1395 ,  H01M4/364 ,  H01M4/38 ,  H01M4/405 ,  H01M4/583 ,  H01M4/587 ,  H01M4/60 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/30

Abstract: The present invention relates to an electrode binder composition including a high-molecular-weight poly(amic acid) having a weight-average molecular weight of 5,000 or more and 100,000 or less and a low-molecular-weight poly(amic acid) having a weight-average molecular weight of 100 or more and 2,000 or less, and the present invention can provide an electrode binder composition that leads to a secondary battery having a high capacity superior in the initial charge/discharge efficiency and the cycle characteristics.

Abstract translation: 本发明涉及包含重均分子量为5,000以上且100,000以下的高分子量聚（酰胺酸）和低分子量聚（酰胺酸）的电极粘合剂组合物，其具有 重均分子量为100以上且2,000以下，本发明可以提供一种电极粘合剂组合物，其导致具有优异的初始充放电效率和循环特性的高容量的二次电池。