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Alluaudite Class of High Voltage Sodium Insertion Materials: An Interplay of Polymorphism and Magnetism

Dwibedi, Debasmita and Barpanda, Prabeer (2017) Alluaudite Class of High Voltage Sodium Insertion Materials: An Interplay of Polymorphism and Magnetism. In: 61st DAE-Solid State Physics Symposium, DEC 26-30, 201, KIIT Univ, Bhubaneswar, INDIA.

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Official URL: http://doi.org/10.1063/1.4980761

Abstract

The research and development with sodium ion batteries has geared up manifold in last one decade, owing to their abundance, non-toxicity, uniform geographical distribution and electrochemical performance complimentary to lithium counterpart. This research often leads to various novel material discoveries such as Na2Fe2(SO4)(3) sodium insertion material, which has recently registered the highest-ever Fe3+/Fe2+ redox potential (3.8 V vs. Na) having excellent cyclability and rate kinetics. This basically belongs to a family of materials-Alluaudites Na2M2(SO4)(3) (M: Fe, Mn, Co, Ni). Such cathode insertion compounds are basically functional materials, involving redox active 3d transition metals that are often magnetic in nature. We have investigated the magnetic structure and properties of - Alluaudites Na2M2(SO4)(3). These alluaudite shows wide structural diversity and polymorphism. Employing various experimental methods involving diffraction, magnetic susceptibility, Mossbauer spectroscopy and low temperature neutron powder diffraction data we have explored the magnetic properties exhibited by the Alluaudite class of insertion materials.

Item Type: Conference Proceedings
Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 11 Nov 2017 05:05
Last Modified: 11 Nov 2017 05:05
URI: http://eprints.iisc.ac.in/id/eprint/58227

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