公开(公告)号：US09975995B2

公开(公告)日：2018-05-22

申请号：US14709264

申请日：2015-05-11

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Young Taik Hong ,  Jang Yong Lee ,  Tae Ho Kim ,  Duk Man Yu ,  Seog Je Kim

IPC: C08F283/00 ,  E01C7/26 ,  C08G65/48 ,  H01M8/1023 ,  H01M8/18 ,  C08G61/10 ,  C08G61/12 ,  H01M8/0221 ,  H01M8/20 ,  C08G65/40 ,  H01M8/1032 ,  H01M8/1018

CPC classification number: C08G65/48 ,  C08G61/10 ,  C08G61/12 ,  C08G65/4012 ,  C08G2261/126 ,  C08G2261/142 ,  C08G2261/1452 ,  C08G2261/148 ,  C08G2261/312 ,  C08G2261/3444 ,  C08G2261/412 ,  C08G2261/516 ,  H01M8/0221 ,  H01M8/1023 ,  H01M8/1032 ,  H01M8/188 ,  H01M8/20 ,  H01M2008/1095 ,  H01M2300/0082 ,  Y02E60/528 ,  Y02P70/56

Abstract: The present invention relates to an ion conducting polymer including a partially branched block copolymer; a method of preparing the same; an ion conductor including the ion conducting polymer; an electrolytic membrane including the ion conducting polymer; a membrane-electrode assembly comprising the electrolytic membrane, and a battery comprising the same; and a separation membrane for a redox flow battery including the ion conducting polymer, and a redox flow battery comprising same. Specifically, the partially branched block copolymer includes: a first block including a hydrophilic first polymer; a second block derived from a hydrophobic second polymer having two or more reactive groups respectively on its both ends, in such a way as to form branching points forming side branches on a main chain; and optionally a third block including a hydrophobic third polymer. The ion conducting polymer in the form of a partially branched block copolymer can prepare a polymer membrane having improved conductivity and superior physical properties such as tensile strength elongation at break, etc., while having the same or similar ion-exchange capacity (IEC), percentage water absorption and/or degree of dimensional change compared to conventional ion conducting polymers in the form of linear block copolymers. Because of such outstanding physical properties, the polymer membrane can be used as a membrane-electrode assembly for a fuel cell, and a redox flow battery comprising the same as a separation membrane can exhibit outstanding cell performance and maintain high discharge charge capacity retention rate even when repeatedly charged and discharged several times.

公开(公告)号：US20140206899A1

公开(公告)日：2014-07-24

申请号：US13825692

申请日：2011-11-14

Applicant: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY

Inventor： Young Taik Hong ,  Seog Je Kim ,  Ji Young Park ,  Dong Hyun Lee

IPC: C07C315/06

CPC classification number: C07C315/06 ,  C07C317/14

Abstract: The present invention relates to an improved method for purifying a sulfonated aromatic monomer. The method is an economical method capable of providing a highly pure sulfonated aromatic monomer, in which a salt precipitation step and a recrystallization step are simplified while maintaining the reaction conditions used in a conventional method for synthesizing the sulfonated aromatic monomer, and a purification process is carried out using an easily available and stable chemical substance. The sulfonated aromatic monomer obtained by the purification method will be useful for the preparation of a polymer for a polymer electrolyte membrane and will be advantageous to synthesize polymer with high molecular weight.

Abstract translation: 本发明涉及一种改进的磺化芳族单体的纯化方法。 该方法是能够提供高纯度磺化芳族单体的经济方法，其中在保持用于合成磺化芳族单体的常规方法中使用的反应条件的同时简化盐沉淀步骤和重结晶步骤，并且纯化过程为 使用易于获得和稳定的化学物质进行。 通过纯化方法获得的磺化芳族单体可用于制备聚合物电解质膜的聚合物，并且有利于合成高分子量的聚合物。