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학술지 Effects of Preparation Conditions on the Ionic Conductivity of Hydrothermally Synthesized Li1+xAlxTi2-x(PO4)3 Solid Electrolytes
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저자
김광만, 신동옥, 이영기
발행일
201509
출처
Electrochimica Acta, v.176, pp.1364-1373
ISSN
0013-4686
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.electacta.2015.07.170
협약과제
14PB4300, 중대형 전고체 리튬이차전지용 유무기 하이브리드 고체전해질, 이영기
초록
Abstract Li1+xAlxTi2-x(PO4)3 (LATP) solid electrolytes are prepared by hydrothermal reaction as an effective method to yield moderate ionic conductivity adoptable in actual lithium-ion batteries. Particularly examined in this study are the effects of the synthesis conditions, such as Al dopant concentration (x), hydrothermal reaction time, and calcination and sintering temperatures, on the ionic conductivity of the synthesized LATP. Through repeated synthesis and characterizations of the LATPs by variation of the values of condition variables, the optimum condition for the best LATP with adequate ionic conductivity applicable to actual lithium batteries are determined to be x = 0.3 or 0.4, a hydrothermal reaction time of 12 h, and calcination and sintering temperatures of 600°C and 900°C, respectively.
키워드
Ionic conductivity, Li Al Ti (PO ) 1+x x 2-x 4 3, Lithium-ion batteries, Solid electrolytes
KSP 제안 키워드
2 H, Al dopant, Dopant concentration, Hydrothermal reaction, Ion batteries, Lithium battery, Optimum condition, Preparation conditions, Reaction time, Sintering temperatures, Solid electrolyte