公开(公告)号：US11133562B2

公开(公告)日：2021-09-28

申请号：US14410674

申请日：2013-11-01

Applicant: Arkema Inc.

Inventor： John Schmidhauser ,  Scott R. Gaboury ,  Ramin Amin-Sanayei ,  Christophe Roger ,  Wensheng He ,  Rosemary Heinze

IPC: H01M50/46 ,  H01G11/52 ,  H01M50/403 ,  H01M50/411 ,  H01M50/449 ,  H01M50/446

Abstract: The invention relates to integrated electrode separators (IES), and their use in lithium ion batteries as replacements for free standing separators. The IES results from coating an electrode with a fluoropolymer aqueous-based emulsion or suspension, and drying the coating to produce a tough, porous separator layer on the electrodes. The aqueous fluoropolymer coating may optionally contain dispersed inorganic particles and other additives to improve electrode performance such as higher ionic conduction or higher temperature use. The IES provides several advantages, including a thinner, more uniform separator layer, and the elimination of a separate battery component (separator membrane) for a simpler and cost-saving manufacturing process. The aqueous separator coating can be used in combination with a solvent cast electrode as well as an aqueous cast electrode either in two separate process steps, or in a one-step process.

公开(公告)号：US20150340676A1

公开(公告)日：2015-11-26

申请号：US14410674

申请日：2013-11-01

Applicant: Arkema Inc.

Inventor： John Schmidhauser ,  Scott R. GABOURY ,  Ramin AMIN-SANAYEI ,  Chirstophe ROGER ,  Wensheng HE ,  Rosemary HEINZE

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1673 ,  H01G11/52 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1686 ,  Y02E60/13

Abstract: The invention relates to integrated electrode separators (IES), and their use in lithium ion batteries as replacements for free standing separators. The IES results from coating an electrode with a fluoropolymer aqueous-based emulsion or suspension, and drying the coating to produce a tough, porous separator layer on the electrodes. The aqueous fluoropolymer coating may optionally contain dispersed inorganic particles and other additives to improve electrode performance such as higher ionic conduction or higher temperature use. The IES provides several advantages, including a thinner, more uniform separator layer, and the elimination of a separate battery component (separator membrane) for a simpler and cost-saving manufacturing process. The aqueous separator coating can be used in combination with a solvent cast electrode as well as an aqueous cast electrode either in two separate process steps, or in a one-step process.

Abstract translation: 本发明涉及一体化电极分离器（IES），它们在锂离子电池中用作独立分离器的替代物。 IES通过用含氟聚合物水性乳液或悬浮液涂覆电极，并干燥涂层以在电极上产生坚韧的多孔隔离层。 含氟聚合物涂层可以任选地包含分散的无机颗粒和其它添加剂以改善电极性能，例如更高的离子传导或更高的温度使用。 IES提供了几个优点，包括更薄，更均匀的隔离层，以及消除单独的电池组件（隔膜），以实现更简单和节省成本的制造工艺。 水分离器涂层可以在两个单独的工艺步骤中或在一步法中与溶剂流延电极以及水性浇铸电极组合使用。