公开(公告)号：US20190097220A1

公开(公告)日：2019-03-28

申请号：US16137863

申请日：2018-09-21

Applicant: Samsung Electronics Co., Ltd. ,  Samsung SDI Co., Ltd.

Inventor： Heechul JUNG ,  Woojin BAE ,  Guesung KIM ,  Koichi TAKEI ,  Seongho JEON ,  Sungsoo HAN

IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/137 ,  H01M4/583 ,  H01M4/38 ,  H01M4/04

Abstract: A negative active material including an active material core; and a polymer layer disposed on a surface of the active material core, wherein the polymer layer includes a third polymer including a cross-linked product of a first polymer and a second polymer, wherein the first polymer is at least one of polyamic acid, polyimide, or a combination thereof, and includes a first functional group; and the second polymer is water-soluble and includes a second functional group, and wherein the first polymer and the second polymer are cross-linked by an ester bond that is formed through at least one reaction starting from the first functional group and the second functional group, and at least one of the first polymer and the second polymer further includes a halogen group.

公开(公告)号：US20190067699A1

公开(公告)日：2019-02-28

申请号：US16105045

申请日：2018-08-20

Applicant: Samsung Electronics Co., Ltd. ,  Samsung SDI Co., Ltd.

Inventor： Woojin BAE ,  Kanghee LEE ,  Heechul JUNG ,  Seongho JEON ,  Sungsoo HAN

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M10/0525 ,  C08J3/24

Abstract: A binder includes a cross-linked product of at least a first polymer, a second polymer, and a third polymer, wherein the cross-linked product is cross-linked by at least two ester bonds; the first polymer includes polyimide, polyamic acid, a copolymer thereof, or a combination thereof, wherein the first polymer includes a structural unit including an alkali metal and a structural unit including at least one hydroxyl functional group; the second polymer includes poly(acrylic acid), poly(methacrylic acid), a copolymer thereof, or a combination thereof; and the third polymer includes polyvinyl alcohol, polyacrylamide, polymethacrylamide, a copolymer thereof, or a combination thereof.

公开(公告)号：US20170155151A1

公开(公告)日：2017-06-01

申请号：US15356932

申请日：2016-11-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Woojin BAE ,  Seunguk KWON ,  Jeeeun YANG

IPC: H01M4/62 ,  C08G73/10 ,  H01M4/587 ,  H01M4/04 ,  H01M4/36 ,  H01M4/38

CPC classification number: H01M4/622 ,  C08G73/105 ,  C08G73/1071 ,  H01M4/0471 ,  H01M4/139 ,  H01M4/362 ,  H01M4/386 ,  H01M4/587

Abstract: A water-soluble partially lithiated polyamic acid having an acid equivalent of less than 300 grams per equivalent and a degree of lithium ion substitution of from about 0.2 equivalents to about 1.0 equivalent with respect to carboxylic acid groups, which is a product of a polyamic acid and lithium hydroxide.

公开(公告)号：US20180026270A1

公开(公告)日：2018-01-25

申请号：US15656476

申请日：2017-07-21

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  Samsung SDI Co., Ltd.

Inventor： Woojin BAE ,  Seunguk KWON ,  Sangkook MAH ,  Jeeeun YANG ,  Dukhyoung YOON ,  Sungsoo HAN

IPC: H01M4/62 ,  C08L87/00 ,  H01M4/36 ,  H01M10/0568 ,  H01M4/587 ,  H01M6/16 ,  H01M10/0569 ,  C08G81/02 ,  H01M4/38

CPC classification number: H01M4/622 ,  C08G73/1042 ,  C08G73/1071 ,  C08G81/027 ,  C08G81/028 ,  C08L87/00 ,  C08L87/005 ,  H01M4/364 ,  H01M4/366 ,  H01M4/382 ,  H01M4/386 ,  H01M4/587 ,  H01M4/606 ,  H01M6/164 ,  H01M6/166 ,  H01M6/168 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2300/004

Abstract: A binder includes a third polymer including a cross-linked product of a first polymer and a second polymer, wherein the first polymer includes a first functional group and is at least one selected from a polyamic acid and a polyimide, wherein the second polymer includes a second functional group and is water-soluble, and wherein the first polymer and the second polymer are cross-linked by an ester bond formed by a reaction of the first functional group and the second functional.