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ZnO with good lithiophilicity has widely been employed to modify the lithiophobic substrates and facilitate uniform lithium (Li) deposition. The overpotential of ZnO-derived Li anode during cycling depends on the lithiophilicity of both LiZn and Li2O products upon lithiation of ZnO. However, the striking differences in the lithiophilicity between Li2O and LiZn would result in a high overpotential during cycling. In this research, the Al2O3/nZnO (n >= 1) hybrid layers were precisely fabricated by atomic layer deposition (ALD) to regulate the lithiophilicity of ZnO phase and Li2O/LiZn configuration-determining the actual Li loading amount and Li plating/stripping processes. Theoretically, the Li adsorption energy (E-a) values of LiZn and Li2O in the LiZn/Li2O configuration are separately predicted as -2.789 and -3.447 eV. In comparison, the E-a values of LiZn, LiAlO2, and Li2O in the LiZn/LiAlO2/Li2O configuration upon lithiation of Al2O3/8ZnO layer are calculated as -2.899, -3.089, and -3.208 eV, respectively. Importantly, a novel introduction of LiAlO2 into the LiZn/Li2O configuration could enable the hierarchical Li plating/stripping and reduce the overpotentials during cycling. Consequently, the Al2O3/8ZnO-derived hybrid Li-metal anode could exhibit electrochemical performances superior to these of ZnO-derived Li anode in both symmetrical and full cells paired with a LiNi0.6Co0.2Mn0.2O2 (NCM622) cathode.
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CARBON ENERGY
Year: 2025
1 9 . 5 0 0
JCR@2023
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ESI Highly Cited Papers on the List: 0 Unfold All
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