Electrochemical lithium and sodium insertion studies in 3D metal oxy-phosphate framework MoWO3(PO4)2 for battery applications

M. Satyanarayana; Ediga Umeshbabu; A. K. Jibin; Joseph James; P. Justin; U. V. Varadaraju

doi:10.1007/s10008-021-05051-4

Electrochemical lithium and sodium insertion studies in 3D metal oxy-phosphate framework MoWO₃(PO₄)₂ for battery applications

M. Satyanarayana
, Ediga Umeshbabu
, A. K. Jibin
, Joseph James
, P. Justin
, U. V. Varadaraju

Department of Chemistry

Indian Institute of Technology Madras
Karlsruhe Institute of Technology
Christ College, Irinjalakuda
Rajiv Gandhi University of Knowledge Technologies

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

A new type of three-dimensional (3D) oxy-phosphate materials are explored for the application of Li and Na batteries. The molybdenum tungsten oxy phosphate, MoWO₃(PO₄)₂, was synthesized by solid-state method and evaluated for Li/Na insertion/de-insertion electrode material for the first time. The cell at charged state (vs. Li⁺/Li) showed a discharge capacity of 786 mAh g⁻¹ within the voltage window of 0.3 V with amorphization of crystalline MoWO₃(PO₄)₂ as observed from ex-situ powder XRD analysis. The structural integrity was revealed in this material, even with nearly more than 5 Li⁺ ions into the lattice, leading to the discharge capacity of 250 mAh g⁻¹. The reversible charge/discharge behavior with insertion/de-insertion of 2.4 Li⁺ ions in the voltage range of 1.65 − 3.5 V resulted in 110 and 95 mAh g⁻¹ at C/10 and C/5 rates, respectively. On the other hand, poor cycling performance was noticed for Na ion insertion and desertion, with a discharge capacity of 250 mAh/g within the voltage range of 0.3 − 3.5 V (vs. Na⁺/Na).

Original language	English
Pages (from-to)	2675-2685
Number of pages	11
Journal	Journal of Solid State Electrochemistry
Volume	25
Issue number	10-11
DOIs	https://doi.org/10.1007/s10008-021-05051-4
State	Published - Oct 2021

Bibliographical note

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

Keywords

Electrochemical properties
Li and Na insertion
MoWO(PO)
X-ray diffraction

Access to Document

10.1007/s10008-021-05051-4

Cite this

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title = "Electrochemical lithium and sodium insertion studies in 3D metal oxy-phosphate framework MoWO3(PO4)2 for battery applications",

abstract = "A new type of three-dimensional (3D) oxy-phosphate materials are explored for the application of Li and Na batteries. The molybdenum tungsten oxy phosphate, MoWO3(PO4)2, was synthesized by solid-state method and evaluated for Li/Na insertion/de-insertion electrode material for the first time. The cell at charged state (vs. Li+/Li) showed a discharge capacity of 786 mAh g−1 within the voltage window of 0.3 V with amorphization of crystalline MoWO3(PO4)2 as observed from ex-situ powder XRD analysis. The structural integrity was revealed in this material, even with nearly more than 5 Li+ ions into the lattice, leading to the discharge capacity of 250 mAh g−1. The reversible charge/discharge behavior with insertion/de-insertion of 2.4 Li+ ions in the voltage range of 1.65 − 3.5 V resulted in 110 and 95 mAh g−1 at C/10 and C/5 rates, respectively. On the other hand, poor cycling performance was noticed for Na ion insertion and desertion, with a discharge capacity of 250 mAh/g within the voltage range of 0.3 − 3.5 V (vs. Na+/Na).",

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AU - Satyanarayana, M.

AU - Umeshbabu, Ediga

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AU - James, Joseph

AU - Justin, P.

AU - Varadaraju, U. V.

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