| 학회 |
한국재료학회 |
| 학술대회 |
2017년 가을 (11/15 ~ 11/17, 경주 현대호텔) |
| 권호 |
23권 2호 |
| 발표분야 |
14. 에너지 저장 및 하베스팅 특별심포지엄(Energy storage and harvesting special symposium) |
| 제목 |
Enhancing Lithium-Ion Conduction in Oxide-Based Solid Electrolytes via Microstructural Engineering |
| 초록 |
Solid electrolytes are key to the evolution of all-solid-state lithium batteries as next-generation energy storage systems. High ionic conductivity and stability of solid electrolytes are critical requirements in designing reliable all-solid-state lithium batteries. Inorganic materials such as Li3xLa(2/3)−x□(1/3)-2xTiO3 (LLTO) and Li1+xAlxTi2-x(PO4)3 (LATP) have received much attention as potential solid electrolytes to replace current organic liquid electrolytes; however, their practical use is limited by its low total conductivity. With the aim of improving the ionic conductivity, we investigate a correlation between the microstructures and Li+ conducting properties of solid electrolytes. We show that the total conductivity is dominated by the domain/grain boundary resistances, and the synthesis condition of the electrolytes (sintering temperature, Li concentration, and additive) has a crucial role in modifying the microstructure and composition of the domain/grain boundaries to significantly reduce the boundary resistance. The findings of this study would be essential in understanding Li+ conducting behaviors and in developing highly conductive inorganic solid electrolytes. |
| 저자 |
이종원1, 정규남2, 박민식3
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| 소속 |
1조선대, 2한국에너지기술(연), 3경희대 |
| 키워드 |
All-solid-state lithium battery; solid electrolyte; lithium-ion conductivity; microstructural engineering
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| E-Mail |
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