A Ternary Metal Oxide-Reduced Graphene Oxide Composite as High Capacity and Durable Anode for Li-Ion Batteries

Prashantha Kumar, TKM and Tripathy, D and Aiyer, H and Sampath, S (2023) A Ternary Metal Oxide-Reduced Graphene Oxide Composite as High Capacity and Durable Anode for Li-Ion Batteries. In: Journal of the Electrochemical Society, 170 (8).

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Abstract

A ternary metal oxide, bismuth stannate and its carbon composite are prepared by a solution synthesis approach. The as-prepared materials are checked for phase purity by X-ray diffraction and characterized by various characterization techniques. The composite electrode performs better compared to pristine material when investigated as anodes for Li-ion batteries (LIBs). The use of an electrolyte additive leads to improved performance. High capacity of 960 mAh g�1 is obtained at 100 mA g�1 for LIBs. At a high-rate of 1000 mA g�1, 1250 stable cycles are observed with very good capacity retention, and the capacity is �475 mAh g�1 at the end of the cycling. As investigated by different techniques, both conversion and alloying reactions are responsible for such high performance. The carbon network improves the conductivity and stabilize the intermediates formed during cycling. Further, the full cell studies with the composite anode and LiFePO4 cathode show good performance. © 2023 The Electrochemical Society (�ECS�). Published on behalf of ECS by IOP Publishing Limited.

Item Type:	Journal Article
Publication:	Journal of the Electrochemical Society
Publisher:	Institute of Physics
Additional Information:	The copyright for this article belongs to the Institute of Physics.
Keywords:	Anodes; Carbon carbon composites; Electrolytes; Graphene; Iron compounds; Lithium compounds, Bismuth stannate; Carbon composites; High capacity; High-capacity; Metal-oxide; Oxide composites; Performance; Phase purity; Reduced graphene oxides; Solution-synthesis, Lithium-ion batteries
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	23 Nov 2023 05:09
Last Modified:	23 Nov 2023 05:09
URI:	https://eprints.iisc.ac.in/id/eprint/83224

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