Composite polymer electrolyte membrane for fuel cell comprising antioxidants and method of preparing the same

• Main Authors: KIM SEUNG GON, SOHN YOUNG JUN, LEE HYEJIN, WOO SEUNG HEE, PARK SEOK HEE, OH HWANYEONG, YIM SUNG DAE, KIM MIN JIN, LEE BYEOL NIM, CHOI YOON YOUNG, BAE BYUNGCHAN, SHIN DONGWON, PARK GU GON, LEE EUN JIK, ABDUL KODIR, LEE SO JEONG, KANG YUNSIK
• Format: Patent
• Language: English; Korean
• Published: 12.05.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The present invention relates to a method for improving the durability of a polymer electrolyte fuel cell by uniformly introducing an antioxidant to a polymer electrolyte membrane, an electrode, or a membrane-electrode assembly (MEA). The polymer electrolyte membrane includes: ion-conductive polymers; a first additive selected from polyamic acids or salt thereof, diamine compounds and acid dianhydrides, and a mixture thereof; and a second additive selected from metals, metal ions or salt thereof, metal oxide, metal alloys, and graphene oxide. 본 발명은 산화방지제를 고분자 전해질막, 전극, 또는 막-전극 접합체(MEA)에 균일하게 도입하여 고분자 전해질 연료전지의 내구성을 향상시킬 수 있는 발명에 관한 것이다.