The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
Ionic Conductivity and Air Stability of Al-Doped Li7La3Zr2O12 Sintered in Alumina and Pt Crucibles
Abstract
Li7La3Zr2O12 (LLZO) is a promising electrolyte material for all-solid-state battery due to its high ionic conductivity and good stability with metallic lithium. In this article, we studied the effect of crucibles on the ionic conductivity and air stability by synthesizing 0.25Al doped LLZO pellets in Pt crucibles and alumina crucibles, respectively. The results show that the composition and microstructure of the pellets play important roles influencing the ionic conductivity, relative density, and air stability. Specifically, the 0.25Al-LLZO pellets sintered in Pt crucibles exhibit a high relative density (∼96%) and high ionic conductivity (4.48 × 10(-4) S cm(-1)). The ionic conductivity maintains 3.6 × 10(-4) S cm(-1) after 3-month air exposure. In contrast, the ionic conductivity of the pellets from alumina crucibles is about 1.81 × 10(-4) S cm(-1) and drops to 2.39 × 10(-5) S cm(-1) 3 months later. The large grains and the reduced grain boundaries in the pellets sintered in Pt crucibles are favorable to obtain high ionic conductivity and good air stability. X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy results suggest that the formation of Li2CO3 on the pellet surface is probably another main reason, which is also closely related to the relative density and the amount of grain boundary within the pellets. This work stresses the importance of synthesis parameters, crucibles included, to obtain the LLZO electrolyte with high ionic conductivity and good air stability.
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Citations
Cites
Fast Lithium Ion Conduction in Garnet‐Type Li7La3Zr2O12
Murugan, R., Thangadurai, V., & Weppner, W. (2007) · Angewandte Chemie International Edition · doi:10.1002/anie.200701144 · Cited by 3,250
Synthesis and structure analysis of tetragonal Li7La3Zr2O12 with the garnet-related type structure
Awaka, J., Kijima, N., Hayakawa, H., & Akimoto, J. (2009) · Journal of Solid State Chemistry · doi:10.1016/j.jssc.2009.05.020 · Cited by 825
Crystal Chemistry and Stability of “Li7La3Zr2O12” Garnet: A Fast Lithium-Ion Conductor
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Effect of substitution (Ta, Al, Ga) on the conductivity of Li7La3Zr2O12
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First-Principles Studies on Cation Dopants and Electrolyte|Cathode Interphases for Lithium Garnets
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Thermal Stability of Li2O2and Li2O for Li-Air Batteries: In Situ XRD and XPS Studies
Yao, K. P. C., Kwabi, D. G., Quinlan, R. A., Mansour, A. N., Grimaud, A., Lee, Y.-L., Lu, Y.-C., & Shao-Horn, Y. (2013) · Journal of The Electrochemical Society · doi:10.1149/2.069306jes · Cited by 339
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Metadata
- Authors
- Xia, W., Xu, B., Duan, H., Guo, Y., Kang, H., Li, H., & Liu, H.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-02-22
- Volume
- 8
- Issue
- 8
- Pages
- 5335-5342
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W2281878692
- Cited by
- 308
- References
- 16
- FWCI
- 13.26
- Type
- journal article
- Language
- en
- Open access
- closed
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