Solid-state synthesis of β-NaAlO2 nanoflakes as an anode material for high-performance sodium-ion batteries

Durai, Lignesh and Gopalakrishnan, Arthi and Badhulika, Sushmee (2022) Solid-state synthesis of β-NaAlO2 nanoflakes as an anode material for high-performance sodium-ion batteries. Materials Chemistry Frontiers, 6 (19). pp. 2913-2920. ISSN 2052-1537

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Abstract

New anode materials for sodium-ion batteries are being extensively studied to achieve high stability and long-term cyclability. In this work, we demonstrate the solid-state synthesis of β-NaAlO2 nanoflakes as a high performance, long-life anode material for sodium-ion batteries (SIBs). The β-NaAlO2 nanoflakes exhibit a theoretical capacity of ∼326.69 mA h g−1. The as-assembled SIB with β-NaAlO2 as the anode material exhibits an initial discharge capacity of ∼318 mA h g−1 at 0.1C-rate (1st cycle). The SIB displays a discharge capacity of ∼183 mA h g−1 after 1000 cycles with a coulombic efficiency of 92%. This outstanding performance with the long-term cyclability of the β-NaAlO2 anode can be ascribed to the Al3+ in the structure that reduces the Jahn-Teller distortion effect during the process of sodiation and desodiation cycles. The good cyclability of the β-NaAlO2 anode proves it to be a highly stable and cost-effective anode material for high-energy SIBs. © 2022 The Royal Society of Chemistry.

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IITH Creators:

IITH Creators	ORCiD
Badhulika, Sushmee	https://orcid.org/0000-0003-3237-3031

Item Type:

Article

Additional Information:

LD and AG acknowledge the SEM characterization facility funded by DST-FIST project No. DST-FIST (SR/FST/ETI-421/2016).

Uncontrolled Keywords:

Anode material; Cyclability; Initial discharge capacities; Long life; Nano-flakes; New anode material; Performance; Sodium ion batteries; Solid-state synthesis; Theoretical capacity

Subjects:

Electrical Engineering

Divisions:

Department of Electrical Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

13 Oct 2022 12:58

Last Modified:

13 Oct 2022 12:58

URI:

http://raiithold.iith.ac.in/id/eprint/10922