Perovskite lead-based oxide anodes for rechargeable batteries

Chaupatnaik, A and Barpanda, P (2021) Perovskite lead-based oxide anodes for rechargeable batteries. In: Electrochemistry Communications, 127 .

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Abstract

Lead-based perovskites (PbTiO3 and PbZrO3) are introduced as novel anode materials for non-aqueous M-ion rechargeable batteries (M = Li, Na, K). These compounds were scalably prepared by conventional solid-state (dry) and combustion (wet) routes. Charge storage in these perovskites involves a standard conversion (PbII � Pb0) followed by reversible Li-Pb/Na-Pb/K-Pb (de)alloying reaction. The oxide matrix (M2O, TiO2 etc.) phase is crucial for reversibility of Pb alloying reaction, as pristine PbO fails fast. The conversion-alloying reaction mechanism has been verified by ex situ electron microscopy (TEM) study. PbTiO3 delivered 410 mAh/g capacity in the first charge vs. Li/Li+ and Na/Na+, while around 180 mAh/g capacity was observed vs. K/K+. Particularly, PbTiO3 forms a robust anode for sodium-ion batteries with maximum charge extracted under low voltage (below 0.8 V vs. Na/Na+, 275 mAh/g). Similar electrochemical activity was also noticed for other perovskites like PbZrO3 that confirms Pb-based (simple and mixed) perovskites can form a potential class of battery anode materials. © 2021 The Authors

Item Type:	Journal Article
Publication:	Electrochemistry Communications
Publisher:	Elsevier Inc.
Additional Information:	The copyright for this article belongs to Authors
Keywords:	Alloying; Anodes; Lead alloys; Lead oxide; Lead titanate; Metal ions; Perovskite; Sodium-ion batteries; Titanium dioxide; Zirconium compounds, Anode material; Battery anodes; Charge storage; Electrochemical activities; Low voltages; Oxide anode; Oxide matrix; Reaction mechanism, Titanium alloys
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	03 Aug 2021 07:52
Last Modified:	03 Aug 2021 07:52
URI:	http://eprints.iisc.ac.in/id/eprint/68919

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