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Title: V[sub 2](PO[sub 4])[sub 3]: A novel NASICON-type vanadium phosphate synthesized by oxidative deintercalation of sodium from Na[sub 3]V[sub 2](PO[sub 4])[sub 3]

Abstract

There is considerable current interest in solid materials that can reversibly intercalate atomic species at low temperatures in view of the potential application of such solids in several fields including synthesis of new materials, battery electrodes, electrochromic displays, and chemical sensors. A prototypical example of such a system is Li[sub x]TiS[sub 2], where lithium is incorporated reversibly in the van der Waals gap of the layered host structure. Vanadium oxides are especially attractive as hosts toward atom insertion reactions because of the accessibility of oxidation states ranging from III to V under normal experimental conditions. Most of the vanadium oxides investigated so far in such reactions consist of tunnel or layered structures built up of vanadium-oxygen polyhedra. An exception is VOPO[sub 4][center dot]2H[sub 2]O, which crystallizes in a layered structure formed by linking of VO[sub 6] octahedra and PO[sub 4] tetrahedra. Besides VOPO[sub 4][center dot]2H[sub 2]O, many vanadium-containing oxides formed by VO[sub 6] octahedra and PO[sub 4] and such other tetrahedra giving rise to tunnel or skeleton structures are known. The authors envisaged that it should be possible to carry out reversible redox insertion/extraction reactions with such solids. In this communication, the authors report one such instance which enabled themmore » to synthesize a novel vanadium phosphate, V[sub 2](PO[sub 4])[sub 3], by oxidative extraction of sodium from the NASICON-like Na[sub 3]V[sub 2](PO[sub 4])[sub 3]. The authors also show that V[sub 2](PO[sub 4])[sub 3], so prepared, where the interstitial channel sites of the NASICON structure are empty, is a novel host material for insertion of electropositive atoms such as lithium and hydrogen, by synthesizing Li[sub x]V[sub 2](PO[sub 4])[sub 3] and H[sub 3]V[sub 2](PO[sub 4])[sub 3] starting from V[sub 2](PO[sub 4])[sub 3]. 8 refs., 1 fig., 2 tabs.« less

Authors:
;  [1]
  1. Indian Institute of Science, Bangalore (India)
OSTI Identifier:
7166092
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials; (United States)
Additional Journal Information:
Journal Volume: 4:4; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 25 ENERGY STORAGE; VANADIUM PHOSPHATES; CHEMICAL PREPARATION; HYDROGEN COMPOUNDS; LITHIUM COMPOUNDS; STOICHIOMETRY; ALKALI METAL COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; SYNTHESIS; TRANSITION ELEMENT COMPOUNDS; VANADIUM COMPOUNDS; 400201* - Chemical & Physicochemical Properties; 250903 - Energy Storage- Batteries- Materials, Components, & Auxiliaries

Citation Formats

Gopalakrishnan, J, and Rangan, K K. V[sub 2](PO[sub 4])[sub 3]: A novel NASICON-type vanadium phosphate synthesized by oxidative deintercalation of sodium from Na[sub 3]V[sub 2](PO[sub 4])[sub 3]. United States: N. p., Web.
Gopalakrishnan, J, & Rangan, K K. V[sub 2](PO[sub 4])[sub 3]: A novel NASICON-type vanadium phosphate synthesized by oxidative deintercalation of sodium from Na[sub 3]V[sub 2](PO[sub 4])[sub 3]. United States.
Gopalakrishnan, J, and Rangan, K K. . "V[sub 2](PO[sub 4])[sub 3]: A novel NASICON-type vanadium phosphate synthesized by oxidative deintercalation of sodium from Na[sub 3]V[sub 2](PO[sub 4])[sub 3]". United States.
@article{osti_7166092,
title = {V[sub 2](PO[sub 4])[sub 3]: A novel NASICON-type vanadium phosphate synthesized by oxidative deintercalation of sodium from Na[sub 3]V[sub 2](PO[sub 4])[sub 3]},
author = {Gopalakrishnan, J and Rangan, K K},
abstractNote = {There is considerable current interest in solid materials that can reversibly intercalate atomic species at low temperatures in view of the potential application of such solids in several fields including synthesis of new materials, battery electrodes, electrochromic displays, and chemical sensors. A prototypical example of such a system is Li[sub x]TiS[sub 2], where lithium is incorporated reversibly in the van der Waals gap of the layered host structure. Vanadium oxides are especially attractive as hosts toward atom insertion reactions because of the accessibility of oxidation states ranging from III to V under normal experimental conditions. Most of the vanadium oxides investigated so far in such reactions consist of tunnel or layered structures built up of vanadium-oxygen polyhedra. An exception is VOPO[sub 4][center dot]2H[sub 2]O, which crystallizes in a layered structure formed by linking of VO[sub 6] octahedra and PO[sub 4] tetrahedra. Besides VOPO[sub 4][center dot]2H[sub 2]O, many vanadium-containing oxides formed by VO[sub 6] octahedra and PO[sub 4] and such other tetrahedra giving rise to tunnel or skeleton structures are known. The authors envisaged that it should be possible to carry out reversible redox insertion/extraction reactions with such solids. In this communication, the authors report one such instance which enabled them to synthesize a novel vanadium phosphate, V[sub 2](PO[sub 4])[sub 3], by oxidative extraction of sodium from the NASICON-like Na[sub 3]V[sub 2](PO[sub 4])[sub 3]. The authors also show that V[sub 2](PO[sub 4])[sub 3], so prepared, where the interstitial channel sites of the NASICON structure are empty, is a novel host material for insertion of electropositive atoms such as lithium and hydrogen, by synthesizing Li[sub x]V[sub 2](PO[sub 4])[sub 3] and H[sub 3]V[sub 2](PO[sub 4])[sub 3] starting from V[sub 2](PO[sub 4])[sub 3]. 8 refs., 1 fig., 2 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/7166092}, journal = {Chemistry of Materials; (United States)},
issn = {0897-4756},
number = ,
volume = 4:4,
place = {United States},
year = {},
month = {}
}