Nanorod-shaped NaFeSnO4 having a tunnel-structure analogous to CaFe2O4 is proposed as a novel anode material for rechargeable sodium-ion batteries. The material shows a considerably high charge capacity of 179 mAhg−1 with low redox voltages, decent rate, and cycling performance. XANES results reveal Fe3+/Fe2+ as the active redox couple associated with the sodium insertion/extraction during cycling.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT, grant No. 2019R1A2C1007922). The work done at KIST was supported by the KIST Institutional Program (Project No. 2E30202).This work was also supported by the Dongguk University Research Fund of 2020.
© 2020 The Authors
- Sodium-ion battery
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