Ceria 첨가에 따른 수전해용 공유가교 CL-SPEEK/Silane 4wt%/Cs-MoPA/Ceria 복합막의 특성 연구

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 25; no. 6; pp. 561 - 569
• Main Authors: 오승희(Seunghee Oh), 박대영(Daeyong Park), 황성하(Sungha Hwang), 윤대진(Daejin Yoon), 오연선(Yunsun Oh), 문상봉(Sangbong Moon), 정장훈(Janghoon Chung)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2014
• Subjects: 기계공학; PEMWE; 공유가교결합; Cerium(IV) oxide; 복합막; Covalently cross-link; 술폰화 폴리에테르에테르케톤; Cs-MoPA; 고분자 전해질막 수전해; Ceria; Cs-substituted MoPA; SPEEK; 세리아; Hybrid membrane
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/KHNES.2014.25.6.561

Ceria ($CeO_2$) was used to increase the durability of the membrane in the polymer electrolyte membrane water electrolysis (PEMWE) circumstance. The sulfonated polyether ether ketone (SPEEK) as polymer matrix was prepared in the sulfonation reaction of polyether ether ketone (PEEK) to improve electrochemical characteristics. After sulfonation reaction, the organic-inorganic blended composite membranes were prepared by means of sol-gel casting method with loading the highly dispersed $CeO_2$ and Cs-substituted molybdophosphoric acid (Cs-MoPA) with cross-linking agent (tetrapropyl orthosilicate). Consequently, the composite membrane CL-SPEEK/Silane 4wt%/Cs-MoPA/Ceria(1%) showed the improved characteristics such as 82% of water content, 0.11136 S/cm of proton conductivity at $80^{\circ}C$, 55.50 MPa of tensile strength and 4.37% of breeding out of MoPA.