公开(公告)号：US20160204405A1

公开(公告)日：2016-07-14

申请号：US14911356

申请日：2014-08-05

Applicant: SOLVAY SA

Inventor： Christine HAMON ,  Milena STANGA ,  Riccardo PIERI

IPC: H01M2/14 ,  H01M10/0525 ,  H01M2/16

Abstract: The present invention pertains to a process for manufacturing a solid composite separator, said process comprising the following steps: (i) providing a liquid composition [composition (L)] comprising, preferably consisting of: at least one fluoro-polymer [polymer (F)] comprising one or more backbone chains, said backbone chains comprising recurring units derived from at least one fluorinated monomer [monomer (F)], and one or more side functional groups selected from the group consisting of —O—Rx and —C(O)O—Rx groups, wherein Rx is a hydrogen atom or a C1-C5 hydrocarbon group comprising at least one hydroxyl group, optionally, at least one metal compound of formula (I) [compound (M)]: X4-mAYm wherein X is a hydrocarbon group, optionally comprising one or more functional groups, m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, and Y is a hydrolysable group selected from the group consisting of an alkoxy group, an acyloxy group and a hydroxyl group, at least one inorganic filler [filler (I)], and a liquid medium [medium (L)]; (ii) providing a porous substrate layer made from one or more sets of polymer fibres [substrate (P)]; (iii) applying the composition (L) onto the substrate (P) thereby providing a wet substrate (P) [substrate (P—W)]; (iv) drying and then, optionally, curing the substrate (P—W) provided in step (iii) thereby providing a solid composite separator; and (v) optionally, submitting to compression the solid composite separator provided in step (iv). The present invention also pertains to the solid composite separator obtainable by said process and to use of the solid composite separator in electrochemical devices.

Abstract translation: 本发明涉及一种制备固体复合隔板的方法，所述方法包括以下步骤：（i）提供液体组合物[组合物（L）]，其包含，优选由以下组成：至少一种氟聚合物[聚合物（F ）包含一个或多个主链，所述主链包含衍生自至少一种氟化单体[单体（F）]的重复单元和一个或多个选自-O-Rx和-C（ O）O-Rx基团，其中Rx是氢原子或包含至少一个羟基的C 1 -C 5烃基，任选地至少一种式（I）金属化合物[化合物（M）]：X4-mAYm其中 X是任选包含一个或多个官能团的烃基，m是1至4的整数，A是选自Si，Ti和Zr的金属，Y是选自以下的可水解基团： 的烷氧基，酰氧基等 乙氧基，至少一种无机填料[填料（I）]和液体介质[介质（L）]; （ii）提供由一组或多组聚合物纤维[基材（P）]制成的多孔基材层; （iii）将组合物（L）施加到基材（P）上，从而提供湿底材（P）[基材（P-W）]; （iv）干燥，然后任选地固化步骤（iii）中提供的底物（P-W），从而提供固体复合隔膜; 和（v）任选地，将步骤（iv）中提供的固体复合隔膜进行压缩。 本发明还涉及通过所述方法获得的固体复合隔膜和在电化学装置中使用固体复合隔膜。

公开(公告)号：US20160268599A1

公开(公告)日：2016-09-15

申请号：US15032047

申请日：2014-10-21

Applicant: SOLVAY SA

Inventor： Libero DAMEN ,  Silvia Rita PETRICCI ,  Riccardo PIERI

IPC: H01M4/38 ,  H01M4/136 ,  H01M10/052 ,  H01M4/36 ,  H01M4/62 ,  H01M10/058 ,  H01M4/04 ,  H01M4/1397

CPC classification number: H01M4/38 ,  H01M4/0404 ,  H01M4/043 ,  H01M4/0435 ,  H01M4/13 ,  H01M4/136 ,  H01M4/139 ,  H01M4/1397 ,  H01M4/364 ,  H01M4/366 ,  H01M4/621 ,  H01M4/623 ,  H01M4/624 ,  H01M10/052 ,  H01M10/058 ,  H01M2004/028

Abstract: The present invention pertains to an electrode-forming composition [composition (C)] comprising: (a) an aqueous latex comprising at least one fluoropolymer [polymer (F)] comprising recurring units derived from vinylidene fluoride (VDF), at least one hydrogenated monomer [monomer (H)] and, optionally, at least one other fluorinated monomer [monomer (F)] different from VDF, and, homogeneously dispersed therein, (b) at least one powdery electrode-forming material consisting of Sulphur [material (E)], (c) at least one powdery electrically conducting material [material (C)], (d) optionally, at least one surfactant [surfactant (S)], (e) optionally, at least one binding agent [agent (B)], and (f) optionally, less than 10% by weight, based on the total weight of the composition (C), of at least one organic solvent [solvent (S)], wherein the polymer (F) in the aqueous latex is under the form of primary particles having an average primary particle size of less than 1 μm, as measured according to ISO 13321. The present invention also pertains to a process for the manufacture of said composition (C) and to use of said composition (C) in a process for the manufacture of a positive electrode for a Lithium-Sulphur battery.

Abstract translation: 本发明涉及一种电极形成组合物[组合物（C）]，其包含：（a）包含至少一种含有衍生自偏二氟乙烯（VDF）的重复单元的含氟聚合物[聚合物（F）]，至少一种氢化 单体[单体（H）]和任选的至少一种不同于VDF的其它氟化单体[单体（F）]，并均匀分散在其中，（b）至少一种由硫[材料（ E）]，（c）至少一种粉状导电材料[材料（C）]，（d）任选地至少一种表面活性剂[表面活性剂（S）]，（e）任选的至少一种结合剂[ B）]，和（f）任选地，基于组合物（C）的总重量，小于10重量％的至少一种有机溶剂[溶剂（S）]，其中聚合物（F） 水性胶乳是按照t测量的平均一次粒径小于1μm的一次粒子的形式 本发明还涉及制备所述组合物（C）的方法和所述组合物（C）在用于制造锂硫电池正极的方法中的用途。

公开(公告)号：US20150372274A1

公开(公告)日：2015-12-24

申请号：US14646560

申请日：2013-11-20

Applicant: SOLVAY SA

Inventor： Christine HAMON ,  Riccardo PIERI ,  Shilei CHEN ,  Marc-David BRAIDA ,  Jean-Francois MOUSSET

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1626 ,  H01M2/1653 ,  H01M10/0525

Abstract: The present invention provides method for manufacturing a coated separator for use in an electrochemical device, comprising the steps of: (i) providing a separator having two surfaces; (ii) applying a coating composition [composition (C)] on at least one surface of the separator, the composition (C) comprising a polymer [polymer (P)] and at least one electrolyte salt [salt (E)] of formula (a), A+B− (a) wherein A+ indicates an ion selected from alkaline metal cations or a combination thereof, and B″ indicates an ion selected from anions or a combination thereof, so as to obtain a coating layer onto said surface; and (ii) drying the coating layer so as to obtain a coated separator, wherein the polymer (P) is a vinylidene fluoride (VdF) polymer and comprises recurring units derived from at least one comonomer (C), said comonomer (C) being different from vinylidene fluoride (VdF), and wherein the polymer (P) comprises recurring units derived from at least one (meth)acrylic monomer (MA). Further, the present provides a separator for use in an electrochemical device, said separator being coated on at least one surface thereof a coating comprising a polymer (P) and at least one salt (E) as described above, wherein said coating is characterized by: a dry thickness of from about 0.1 to 10 μm; a weight between 5 and 100% of the weight of the un-coated separator; or being substantially solvent free. Moreover, the present invention provides a method for producing an electrochemical device using the coated separator as described above.

Abstract translation: 本发明提供一种用于制造用于电化学装置的涂覆分离器的方法，包括以下步骤：（i）提供具有两个表面的分离器; （ii）将涂料组合物[组合物（C）]涂布在隔膜的至少一个表面上，包含聚合物[聚合物（P）]和至少一种式（I）的电解质盐[盐（E） （a）中，A + B-（a）其中A +表示选自碱金属阳离子或其组合的离子，B“表示选自阴离子或其组合的离子，从而在所述表面上获得涂层 ; 和（ⅱ）干燥该涂层从而得到涂覆的隔膜，其中聚合物（P）是偏二氟乙烯（VdF）聚合物，并且包含衍生自至少一种共聚单体（C）的重复单元，所述共聚单体（C）为 不同于偏氟乙烯（VdF），并且其中聚合物（P）包含衍生自至少一种（甲基）丙烯酸单体（MA）的重复单元。 此外，本发明提供了一种用于电化学装置的隔板，所述隔膜在其至少一个表面上涂覆有如上所述的包含聚合物（P）和至少一种盐（E）的涂层，其中所述涂层的特征在于 ：干燥厚度为约0.1至10μm; 重量在未涂覆分离器重量的5至100％之间; 或基本上无溶剂。 此外，本发明提供一种如上所述的使用涂覆隔板的电化学装置的制造方法。