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Novel Li3VO4 Nanostructures Grown in Highly Efficient Microwave Irradiation Strategy and Their In-Situ Lithium Storage Mechanism

Journal Article


Abstract


  • The investigation of novel growth mechanisms for electrodes and the understanding of their in situ energy storage mechanisms remains major challenges in rechargeable lithium-ion batteries. Herein, a novel mechanism for the growth of high-purity diversified Li3VO4 nanostructures (including hollow nanospheres, uniform nanoflowers, dispersed hollow nanocubes, and ultrafine nanowires) has been developed via a microwave irradiation strategy. In situ synchrotron X-ray diffraction and in situ transmission electron microscope observations are applied to gain deep insight into the intermediate Li3+xVO4 and Li3+yVO4 phases during the lithiation/delithiation mechanism. The first-principle calculations show that lithium ions migrate into the nanosphere wall rapidly along the (100) plane. Furthermore, the Li3VO4 hollow nanospheres deliver an outstanding reversible capacity (299.6 mAh g−1 after 100 cycles) and excellent cycling stability (a capacity retention of 99.0% after 500 cycles) at 200 mA g−1. The unique nanostructure offers a high specific surface area and short diffusion path, leading to fast thermal/kinetic reaction behavior, and preventing undesirable volume expansion during long-term cycling.

Publication Date


  • 2022

Citation


  • Sun, Y., Li, C., Yang, C., Dai, G., Li, L., Hu, Z., . . . Zhu, J. (2022). Novel Li3VO4 Nanostructures Grown in Highly Efficient Microwave Irradiation Strategy and Their In-Situ Lithium Storage Mechanism. Advanced Science, 9(3). doi:10.1002/advs.202103493

Scopus Eid


  • 2-s2.0-85119508063

Volume


  • 9

Issue


  • 3

Abstract


  • The investigation of novel growth mechanisms for electrodes and the understanding of their in situ energy storage mechanisms remains major challenges in rechargeable lithium-ion batteries. Herein, a novel mechanism for the growth of high-purity diversified Li3VO4 nanostructures (including hollow nanospheres, uniform nanoflowers, dispersed hollow nanocubes, and ultrafine nanowires) has been developed via a microwave irradiation strategy. In situ synchrotron X-ray diffraction and in situ transmission electron microscope observations are applied to gain deep insight into the intermediate Li3+xVO4 and Li3+yVO4 phases during the lithiation/delithiation mechanism. The first-principle calculations show that lithium ions migrate into the nanosphere wall rapidly along the (100) plane. Furthermore, the Li3VO4 hollow nanospheres deliver an outstanding reversible capacity (299.6 mAh g−1 after 100 cycles) and excellent cycling stability (a capacity retention of 99.0% after 500 cycles) at 200 mA g−1. The unique nanostructure offers a high specific surface area and short diffusion path, leading to fast thermal/kinetic reaction behavior, and preventing undesirable volume expansion during long-term cycling.

Publication Date


  • 2022

Citation


  • Sun, Y., Li, C., Yang, C., Dai, G., Li, L., Hu, Z., . . . Zhu, J. (2022). Novel Li3VO4 Nanostructures Grown in Highly Efficient Microwave Irradiation Strategy and Their In-Situ Lithium Storage Mechanism. Advanced Science, 9(3). doi:10.1002/advs.202103493

Scopus Eid


  • 2-s2.0-85119508063

Volume


  • 9

Issue


  • 3