Layered Na2Mn3O7: A Robust Cathode for Na, K, and Li-Ion Batteries

Sada, K and Senthilkumar, B and Gond, R and Pralong, V and Barpanda, P (2020) Layered Na2Mn3O7: A Robust Cathode for Na, K, and Li-Ion Batteries. [Book Chapter]

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Abstract

Manganese-based layered materials are promising owing to their resource-friendly, low-cost, non-toxic nature with high operational safety. Here, Na– Mn–O ternary layered metal oxide (Na2Mn3O7) was synthesized using a single-step conventional solid-state synthesis. The pure phase Na2Mn3O7 crystallizes in triclinic structure (s.g. P−1). It consists of Mn in 4+ oxidation state with electrochemically activeMn4+/Mn3+ redox center. The as-synthesized black powder worked as a robust cathode for the Na-, K-, and Li-ion half-cells. It delivered a reversible capacity of ~140, ~134, and ~160 mA h g−1, respectively, with Na, K, and Li metal as anode in half-cell architecture. Interestingly, Li- ion half-cell exhibited solid-solution-type (de)intercalation upon the variation of Li-ion concentration inNa2AxMn3O7 whereas Na and K-ion (de)intercalation involves two-phase redox reaction.

Item Type:	Book Chapter
Publication:	Recent Research Trends in Energy Storage Devices: Select Papers from IMSED 2018
Publisher:	Springer Singapore
Additional Information:	The copyright for this article belongs to Springer Singapore.
Keywords:	Cathodes; Intercalation; Layered oxide
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	24 May 2023 03:43
Last Modified:	24 May 2023 03:43
URI:	https://eprints.iisc.ac.in/id/eprint/81539

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