Journal Article

FZJ-2018-02120

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Mechanical and Electrochemical Properties of Cubic and Tetragonal LixLa0.557TiO3 Perovskite Oxide Electrolytes

Hu, X. ; Cheng, X. ; Qin, S. ; Yan, G.FZJ* ; Malzbender, J. (Corresponding author)FZJ* ; Qiang, W. ; Huang, B. (Corresponding author)

2018
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.ceramint.2017.10.129

Abstract: Solid oxide electrolytes with high Li ion conductivity and mechanical stability are vital for all solid-state lithium ion batteries. The perovskite material LixLa0.557TiO3 with various initial Li (0.303 ≤ x ≤ 0.370) is synthesized by traditional solid-state reaction. The cubic and tetragonal structures are prepared with fast and slow cooling, respectively. The results reveal that the Li ion conductivity of the cubic structure is higher. In fact, the bulk conductivity of 1.65 × 10−3 S cm−1 is obtained at room temperature for x = 0.350. The crystal structure is not affected by the Li2O quantity. In addition, Young's modulus, hardness, and fracture toughness are determined with indentation method for both structures. The Young's modulus increases with increasing Li2O. However, hardness and fracture toughness keep a relatively stable value independent of Li2O quantity

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Contributing Institute(s):

1. Werkstoffstruktur und -eigenschaften (IEK-2)

Research Program(s):

1. 111 - Efficient and Flexible Power Plants (POF3-111) (POF3-111)

Appears in the scientific report 2018

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Database coverage:
; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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