Novel polyfluorene-based ionomers, anion exchange membranes and methods for making same

• Main Authors: CHEN NANJUN, LEE YOUNG-MOO, KIM SOON-PYO, WANG HAOXUAN
• Format: Patent
• Language: Chinese; English
• Published: 19.08.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING-UP

The present invention relates to a novel polyfluorene-based ionomer, an anion exchange membrane, a method for preparing a polyfluorene-based ionomer, and a method for manufacturing an anion exchange membrane. The polyfluorene-based ionomers do not contain aryl ether linkages in the polymer backbone and contain piperidine groups incorporated into repeating units. The anion exchange membrane is made from a polyfluorene-based ionomer. The anion exchange membrane has good thermal stability and chemical stability, excellent mechanical characteristics and high ionic conductivity. Due to these advantages, the anion exchange membrane can be used as a membrane for alkaline fuel cells and as a binder or water electrolysis for alkaline fuel cells. 本发明涉及新的基于聚芴的离聚物、阴离子交换膜、用于制备基于聚芴的离聚物的方法和用于制造阴离子交换膜的方法。基于聚芴的离聚物在聚合物主链中不包含芳基醚键并且包含并入至重复单元中的哌啶基团。阴离子交换膜由基于聚芴的离聚物制造。阴离子交换膜具有良好的热稳定性和化学稳定性、优异的机械特性和高的离子传导率。由于这些优点，阴离子交换膜可以用作碱性燃料电池用膜和用于碱性燃料电池的粘结剂或水电解。