리튬이온의 선택적 투과를 위한 Lithium Lanthanum Titanate계 분리막 제조 공정 개발

서지정보

ㆍ발행기관 : 한국분말야금학회 ㆍ수록지정보 : 한국분말야금학회지 / 30권 / 1호
ㆍ저자명 : 김영일, 박상철, 신광호, 김인영, 이기안, 정성균, 이빈

목차

Abstract
1. 서 론
2. 실험 방법
2.1. 분리막 소재 합성 및 소결체 제조
2.2. 전구체 및 제조된 분리막 특성평가
3. 결과 및 고찰
3.1. 분리막 합성 및 소결 공정 최적화
3.2. 제조된 분리막 특성평가
3.3. 제조된 분리막 전기화학적 분석 및 대면적화
4. 결 론
Acknowledgement
References

영어 초록

The global demand for raw lithium materials is rapidly increasing, accompanied by the demand for lithiumion batteries for next-generation mobility. The batch-type method, which selectively separates and concentrates lithium from seawater rich in reserves, could be an alternative to mining, which is limited owing to low extraction rates. Therefore, research on selectively separating and concentrating lithium using an electrodialysis technique, which is reported to have a recovery rate 100 times faster than the conventional methods, is actively being conducted. In this study, a lithium ion selective membrane is prepared using lithium lanthanum titanate, an oxide-based solid electrolyte material, to extract lithium from seawater, and a large-area membrane manufacturing process is conducted to extract a large amount of lithium per unit time. Through the developed manufacturing process, a large-area membrane with a diameter of approximately 20 mm and relative density of 96% or more is manufactured. The lithium extraction behavior from seawater is predicted by measuring the ionic conductivity of the membrane through electrochemical analysis.

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