Journal Article

FZJ-2019-02492

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Electrochemical and Mechanical Stability of LixLa0.557TiO3‐δ Perovskite Electrolyte at Various Voltages

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

2019
Soc. Westerville, Ohio

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Please use a persistent id in citations: http://hdl.handle.net/2128/23377  doi:10.1111/jace.16049

Abstract: Perovskite LixLa0.557TiO3 electrolytes in all‐solid‐state lithium batteries are operated under a voltage gradient, which potentially induces the electrochemical and mechanical instability. To simulate the properties of LixLa0.557TiO3 (LLTO) under application relevant conditions, samples are charged (or discharged) to 0.2 V, 3.2 V, 4.0 V, and 4.5 V, respectively. The Li ion conductivity is 9.55 × 10−5 S/cm at 3.2 V and decreases obviously to 2.54 × 10−5 S/cm as the voltage increases to 4.5 V, whereas the value of the LLTO‐0.2 V is between that of LLTO‐3.2 V and LLTO‐4.0 V. In terms of mechanical behavior, elastic modulus (E), hardness (H), and fracture toughness (KIC) of LLTO operated at different voltages are also tested using depth‐sensitive indentation. The results can be used in the designing, monitoring and also improving of the battery cells

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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 2019

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

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