Chintha, S and Atif, S and Chaupatnaik, A and Golubnichiy, A and Abakumov, AM and Barpanda, P (2024) Na0.5Bi0.5TiO3 perovskite anode for lithium-ion batteries. In: Sustainable Energy and Fuels, 8 (21). 5058 - 5064.
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Abstract
Lithium-ion battery technology, currently the most popular form of mobile energy storage, primarily uses graphite as the anode. However, the graphite anode, owing to its low working voltage at high current density, is susceptible to lithium plating and related safety risks. In this direction, perovskite oxides like CaSnO3, more recently PbTiO3, have been explored as alternate anode materials due to their higher operational voltage. Extending this family of perovskites, we introduce a widely used lead-free piezoelectric ceramic Na0.5Bi0.5TiO3 (NBT) as a potential anode for lithium-ion batteries. NBT has an average voltage of 0.7 V and a high capacity of 220 mA h g�1. Ex situ diffraction and spectroscopy tools were used to understand the charge storage mechanism. The oxide undergoes an irreversible conversion reaction in the first discharge, followed by reversible (de)alloying of Bi with Li in the subsequent cycles. This material is airstable, with a capacity retention of 82 up to 50 cycles at a high current of 100 mA g�1 without any optimization. Furthermore, limiting the voltage window increases the cycle life to 200 cycles. Perovskite-type Na0.5Bi0.5TiO3 is proposed as a new Bi-based conversion alloying anode for lithium-ion batteries. © 2024 The Royal Society of Chemistry.
| Item Type: | Journal Article |
|---|---|
| Publication: | Sustainable Energy and Fuels |
| Publisher: | Royal Society of Chemistry |
| Additional Information: | The copyright for this article belongs to authors. |
| Keywords: | Bismuth alloys; Calcium alloys; IV-VI semiconductors; Layered semiconductors; Lead alloys; Lead titanate; Lead zirconate titanate; Lithium alloys; Lithium compounds; Neodymium alloys; Perovskite; Sodium alloys; Titanium alloys, Energy; Graphite anode; High current densities; Ion batteries; Lithium ions; Lithium-ion-battery technology; Perovskite anodes; Safety risks; TiO; Working voltage, Piezoelectric ceramics |
| Department/Centre: | Division of Chemical Sciences > Materials Research Centre |
| Date Deposited: | 16 Nov 2024 13:13 |
| Last Modified: | 16 Nov 2024 13:13 |
| URI: | http://eprints.iisc.ac.in/id/eprint/86802 |
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