In Situ X-Ray Diffraction and Alkali Ion (A = Li, Na, K) Intercalation Behavior of Na2FeP2O7 Pyrophosphate

Gond, R and Singh, S and Vanam, SP and Pralong, V and Barpanda, P (2020) In Situ X-Ray Diffraction and Alkali Ion (A = Li, Na, K) Intercalation Behavior of Na2FeP2O7 Pyrophosphate. [Book Chapter]

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Abstract

Among polyanionic materials, Na2FeP2O7 system has attracted much attention towards large-scale economic sodium-ion battery applications. High thermal stability, facile Na-ion migration, and high operational stability has made this system a suitable subject to explore Li-ion and K-ion intercalation into the pyrophosphate host matrix. Pyrophosphate (P2O7)4− anion offers better safety than other phosphate-based cathodes. Further, Fe-based systems are less hazardous and safer electrode materials and can offer a new class of cathode materials for Li-ion and K-ion battery applications. Excellent electrochemistry of triclinic Na2FeP2O7 structure (space group: P ￣1) has been studied using in situ XRD for few cycles tested against Na-ion intercalation (vs. Na/Na+), which clearly supports and demonstrates the expansion and contraction of the structure during Fe3+/Fe2+ redox process.

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:	In situ XRD; Polyanions; Pyrophosphate
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	23 May 2023 03:32
Last Modified:	23 May 2023 03:32
URI:	https://eprints.iisc.ac.in/id/eprint/81630

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