TY  - JOUR
AU  - Hu, Xitao
AU  - Yan, Gang
AU  - Cheng, Xu
AU  - Malzbender, Jürgen
AU  - Qiang, Wenjiang
AU  - Huang, Bingxin
TI  - Electrochemical and Mechanical Stability of LixLa0.557TiO3‐δ Perovskite Electrolyte at Various Voltages
JO  - Journal of the American Ceramic Society
VL  - 102
IS  - 4
SN  - 1551-2916
CY  - Westerville, Ohio
PB  - Soc.
M1  - FZJ-2019-02492
SP  - 1953-1960
PY  - 2019
AB  - 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
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000459595500044
DO  - DOI:10.1111/jace.16049
UR  - https://juser.fz-juelich.de/record/862138
ER  -