Can lithium form phases with molybdenum

Journal of Solid State Chemistry(2019)

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摘要
Lithium and molybdenum do not form binary phases under thermodynamic control, but they might do under kinetic control upon lithiation of MoS2. High Lithiation of MoS2 can either lead to high-lithiated phases [1] or form Li-Mo phases at the lithiation point at which decomposition in Li2S and elemental molybdenum can occur. First-principles crystal structure prediction calculations suggest that the LiMo, monoclinic structure, and Li2Mo, either orthorhombic or tetragonal structures, can be formed under kinetic control as co-products of the overall process of lithiation of MoS2. The computed enthalpies of formation of the Li-Mo phases vary considerably if the long-range dispersion interactions are accounted in for the elemental lithium and molybdenum.
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关键词
Crystal structure prediction,Li-Mo phases,Lithiation of MoS2,DFT calculations,CASPESA
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