Pressure dependence of the thermal stability in LiMn2O4 |
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Authors: | Yan Zeng Hao Liang Shixue Guan Junpu Wang Wenjia Liang Mengyang Huang Fang Peng |
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Affiliation: | 1.Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China;2.School of Science, Southwest University of Science and Technology, Mianyang 621010, China |
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Abstract: | Structural stability in terms of the decomposition temperature in LiMn2O4 was systematically investigated by a series of high-temperature and high-pressure experiments. LiMn2O4 was found to have structural stability up to 5 GPa at room temperature. Under ambient pressure, the compound decomposed at 1300 ℃. The decomposition temperature decreased with increasing pressure, yielding more complex decomposed products. Below the decomposition temperature, the crystal structure of LiMn2O4 varied with pressure. The presented results in this study offer new insights into the thermal and pressure stability of LiMn2O4 materials as a cathode for lithium-ion batteries that can operate under extreme conditions. Therefore, these findings may serve as a useful guide for future work for improving lithium-ion batteries. |
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Keywords: | LiMn2O4 high pressure x-ray diffractometer decomposition reactions |
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