Ga2O3–Li3VO4/NC nanofibers toward superb high-capacity and high-rate Li-ion storage

• Published in: New journal of chemistry Vol. 46; no. 3; pp. 1025 - 1033
• Main Authors: Li, Daobo, Xu, Zhen, Zhang, Dongmei, Cunyuan Pei, Li, Tao, Xiao, Ting, Ni, Shibing
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 21.01.2022
• Subjects: Discharge; Gallium oxides; Ion storage; Lithium ions; Nanofibers; Reaction kinetics; Synergistic effect
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d1nj04821j

The high-rate performance of Ga2O3-based electrode has been seriously restricted by its modest reaction kinetics caused by the particular challenge of morphology regulation. Herein, Ga2O3–Li3VO4/N-doped C nanofibers (G–LVO/NC NFs) were successfully designed and firstly prepared via a concise electrospinning approach. The as-prepared G–LVO/NC NFs exhibit self-adaptive reaction kinetics owing to the synergistic effect among Ga2O3, Li3VO4, and N-doped C, resulting in superb high-rate Li-ion storage. After repeated rate-performance testing (4 periods) from 0.2 to 10.0 A g−1 over 380 cycles, a high reversible capacity of 968.8 mA h g−1 could be restored when reverting the current back to 0.2 A g−1. When cycling at various high charge/discharge currents of 2.0/4.0, 4.0/6.0, 6.0/8.0, and 8.0/10.0 A g−1, the G–LVO/NC NFs also deliver outstanding cyclability and high charge/discharge capacity of 606.5/608.6, 457.6/457.2, 435.6/435.8, and 317.1/317.9 mA h g−1 after 2000 cycles, respectively, demonstrating great potential toward high power density application.