분말 합성법(Sol-Gel & Solid-State reaction)에 따른 Lithium Lanthanum Titanate 분말의 입자 및 결정 크기 비교 분석에 관한 연구A Study on Particle and Crystal Size Analysis of Lithium Lanthanum Titanate Powder Depending on Synthesis Methods (Sol-Gel & Solid-State reaction)
- Other Titles
- A Study on Particle and Crystal Size Analysis of Lithium Lanthanum Titanate Powder Depending on Synthesis Methods (Sol-Gel & Solid-State reaction)
- Authors
- 윤정재; 이승환; 백소현; 권용범; 송요셉; 김범성; 이빈; 곽노균; 정다운
- Issue Date
- Aug-2023
- Publisher
- 한국분말재료학회
- Keywords
- Seawater; Lithium extraction; Lithium-ion selective membrane; Lithium lanthanum titanate; Powder synthesis
- Citation
- 한국분말재료학회지, v.30, no.4, pp.324 - 331
- Indexed
- KCI
- Journal Title
- 한국분말재료학회지
- Volume
- 30
- Number
- 4
- Start Page
- 324
- End Page
- 331
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190244
- DOI
- 10.4150/KPMI.2023.30.4.324
- ISSN
- 2799-8525
- Abstract
- Lithium (Li) is a key resource driving the rapid growth of the electric vehicle industry globally, with demand and prices continually on the rise. To address the limited reserves of major lithium sources such as rock and brine, research is underway on seawater Li extraction using electrodialysis and Li-ion selective membranes. Lithium lanthanum titanate (LLTO), an oxide solid electrolyte for all-solid-state batteries, is a promising Li-ion selective membrane. An important factor in enhancing its performance is employing the powder synthesis process. In this study, the LLTO powder is prepared using two synthesis methods: sol-gel reaction (SGR) and solid-state reaction (SSR).
Additionally, the powder size and uniformity are compared, which are indices related to membrane performance. X-ray diffraction and scanning electron microscopy are employed for determining characterization, with crystallite size analysis through the full width at half maximum parameter for the powders prepared using the two synthetic methods. The findings reveal that the powder SGR-synthesized powder exhibits smaller and more uniform characteristics (0.68 times smaller crystal size) than its SSR counterpart. This discovery lays the groundwork for optimizing the powder manufacturing process of LLTO membranes, making them more suitable for various applications, including manufacturing high-performance membranes or mass production of membranes.
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