Durable ETFE-grafting ionomers for anion exchange membrane water electrolyzers with a current density of 12.9 A cm−2
- Title
- Durable ETFE-grafting ionomers for anion exchange membrane water electrolyzers with a current density of 12.9 A cm−2
- Other Titles
- 12.9A cm-2의 전류밀도를 갖는 음이온 교환막 수전해를 위한 내구성 ETFE 그래프트 이오노머
- Author
- 이영준
- Alternative Author(s)
- Young Jun LEE
- Advisor(s)
- 이영무
- Issue Date
- 2024. 2
- Publisher
- 한양대학교 대학원
- Degree
- Master
- Abstract
- Durable ETFE-grafting ionomers for anion exchange membrane water electrolyzers with a current density of 12.9 A cm−2 Young Jun LEE Dept. of Energy Engineering The Graduate school Hanyang University In the quest for efficient and sustainable hydrogen production, anion exchange membrane (AEM) water electrolyzers (AEMWEs) have gained significant attention. Development of AEMs has accelerated in the past few decades while the significance of the ionomer on AEMWE performance and durability is always unrecognized. In this study, we proposed a class of electrochemically durable ionomers by introducing the piperidinium group onto the ethylene tetrafluoroethylene (ETFE) backbone using a radiation grafting technology. To avoid disruption of the conformation of the piperidinium group during the functionalization process, we grafted the piperidinium group onto the polymer backbone at the gamma position of the N-piperidinium group using trifluoromethanesulfonic acid as a catalyst. The prepared ETFE-g-poly(styryl propyl piperidinium) ionomers exhibited outstanding electrochemical properties and enhanced alkaline stability. Most notably, the corresponding AEMWEs demonstrated an impressive current density of 12.9 A cm−2 at 2.0 V under 80℃ in 1 M KOH solution. Furthermore, they were continuously operated at a current density of 0.5 A cm−2 for over 300 h with a low voltage decay rate of 0.12 mV h−1. This study offers valuable insights into the development of robust solid-state ionomers through radiation grafting, paving the way for high- performance AEMWEs.
- URI
- http://hanyang.dcollection.net/common/orgView/200000721777https://repository.hanyang.ac.kr/handle/20.500.11754/188668
- Appears in Collections:
- GRADUATE SCHOOL[S](대학원) > ENERGY ENGINEERING(에너지공학과) > Theses (Master)
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