One-step solid-state reaction synthesis of β-NaFeO2 nanopebble as high capacity cathode material for sodium ion batteries

Durai, L and Gopalakrishnan, Arthi and Badhulika, Sushmee (2020) One-step solid-state reaction synthesis of β-NaFeO2 nanopebble as high capacity cathode material for sodium ion batteries. Materials Letters, 270. ISSN 0167-577X

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Abstract

Here we report a facile one-step solid-state synthesis of novel β-NaFeO2 nanopebble as a promising cathode material for sodium ion batteries (SIBs). The presence of octahedral sites at the β phase NaFeO2 enhances the cyclic performance of SIB via Fe3+/Fe4+ redox couple mechanism throughout the sodiation/desodiation cycles. The β-NaFeO2 exhibits a high specific discharge capacity (335 mAhg−1 at a rate of 0.1C for the 1st cycle and 136 mAhg−1 for the 150th cycle with 88.6% coulombic efficiency), rapid sodiation/desodiation kinetics with high sodium storage capability and excellent cyclability. The performance of the as-fabricated SIB with high specific capacity and good rate capability testify its potential application as a low cost, new cathode material for high-capacity SIBs.

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