LaGaO3 기반의 전해질을 이용한 고온 수전해 기술의 최신 동향

• 영문명: Recent Advances in High Temperature Electrolysis Cells using LaGaO3-based Electrolyte
• 발행기관: 한국세라믹학회
• 저자명: 이석희(Seokhee Lee) 이상원(Sang Won Lee) 김수지(Suji Kim) 신태호(Tae Ho Shin)
• 간행물 정보: 『세라미스트』제24권 제4호, 424~437쪽, 전체 14쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2021.12.31

영문 초록

High temperature electrolysis is a promising option for carbon-free hydrogen production and huge energy storage with high energy conversion efficiencies from renewable and nuclear resources. Over the past few decades, yttria-stabilized zirconia (YSZ) based ion conductor has been widely used as a solid electrolyte in solid oxide electrolysis cells (SOECs). However, its high operation temperature and lower conductivity in the appropriate temperature range for solid electrochemical devices were major drawbacks. Regarding improving ionic-conducting electrolytes, several groups have contributed significantly to developing and applying LaGaO3 based perovskite as a superior ionic conductor. La(Sr)Ga(Mg)O3 (LSGM) electrolyte was successfully validated for intermediate-temperature solid oxide fuel cells (SOFCs) but was rarely conducted on SOECs for its high efficient electrolysis performance. Their lower mechanical strengths or higher reactivity with electrode compared with the YSZ electrolysis cells, which make it difficult to choose compatible materials, remain major challenges. In this field, SOECs have attracted a great attention in the last few years, as they offer significant power and higher efficiencies compared to conventional YSZ based electrolysers. Herein, SOECs using LSGM based electrolyte, their applications, high performance, and their issues will be reviewed.

목차

Ⅰ. 서론

Ⅱ. 세라믹 고온 수전해 연구의 배경

Ⅲ. 고온 수전해의 열역학적 고찰

Ⅳ. SOEC 단위 셀 구성

Ⅴ. LaGaO3계 고 이온 전도성 전해질 소재

Ⅵ. LaGaO3계 전해질을 적용한 SOEC 최신기술

Ⅶ. LaGaO3계 전해질 부반응 억제 기술 동향

Ⅷ. 결론

감사의 글

REFERENCES

키워드

lanthanum gallate solid oxide electrolysis cells perovskite high temperature electrolyser