Synthesis, crystal structure, and ionic conductivity of a polycrystalline lithium phosphorus oxynitride with the γ-Li3PO4 structure

B. Wang; B. C. Chakoumakos; B. C. Sales; B. S. Kwak; J. B. Bates

doi:10.1006/jssc.1995.1140

Synthesis, crystal structure, and ionic conductivity of a polycrystalline lithium phosphorus oxynitride with the γ-Li₃PO₄ structure

B. Wang, B. C. Chakoumakos, B. C. Sales, B. S. Kwak, J. B. Bates

Single Crystal Diffraction

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Abstract

A crystalline form of lithium phosphorus oxynitride, Li_2.88 PO_3.73N_0.14, has been prepared by solid state reaction between Li₃N and LiPO₃ under a flowing N₂ atmosphere. The structure of the oxynitride was refined by Rietveld analysis of neutron powder diffraction data using the orthorhombic unit cell of γ-Li₃PO₄ with space group Pmnb. High-performance liquid chromatography measurement indicates that most nitrogen substitutes for oxygen to form PO₃N structural units with small concentrations of P-N=P due to some Li ↔ P disorder in the structure. The ionic conductivity of Li_2.88PO_3.73N_0.14 (σ_25°C ∼ 10^-13 S · cm_-1) is several orders of magnitude higher than that of γ-Li₃PO₄ (σ_25°C ∼ 10^-18 S · cm^-1).

Original language	English
Pages (from-to)	313-323
Number of pages	11
Journal	Journal of Solid State Chemistry
Volume	115
Issue number	2
DOIs	https://doi.org/10.1006/jssc.1995.1140
State	Published - Mar 1995

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title = "Synthesis, crystal structure, and ionic conductivity of a polycrystalline lithium phosphorus oxynitride with the γ-Li3PO4 structure",

abstract = "A crystalline form of lithium phosphorus oxynitride, Li2.88 PO3.73N0.14, has been prepared by solid state reaction between Li3N and LiPO3 under a flowing N2 atmosphere. The structure of the oxynitride was refined by Rietveld analysis of neutron powder diffraction data using the orthorhombic unit cell of γ-Li3PO4 with space group Pmnb. High-performance liquid chromatography measurement indicates that most nitrogen substitutes for oxygen to form PO3N structural units with small concentrations of P-N=P due to some Li ↔ P disorder in the structure. The ionic conductivity of Li2.88PO3.73N0.14 (σ25°C ∼ 10-13 S · cm-1) is several orders of magnitude higher than that of γ-Li3PO4 (σ25°C ∼ 10-18 S · cm-1).",

author = "B. Wang and Chakoumakos, {B. C.} and Sales, {B. C.} and Kwak, {B. S.} and Bates, {J. B.}",

year = "1995",

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T1 - Synthesis, crystal structure, and ionic conductivity of a polycrystalline lithium phosphorus oxynitride with the γ-Li3PO4 structure

AU - Wang, B.

AU - Chakoumakos, B. C.

AU - Sales, B. C.

AU - Kwak, B. S.

AU - Bates, J. B.

PY - 1995/3

Y1 - 1995/3

N2 - A crystalline form of lithium phosphorus oxynitride, Li2.88 PO3.73N0.14, has been prepared by solid state reaction between Li3N and LiPO3 under a flowing N2 atmosphere. The structure of the oxynitride was refined by Rietveld analysis of neutron powder diffraction data using the orthorhombic unit cell of γ-Li3PO4 with space group Pmnb. High-performance liquid chromatography measurement indicates that most nitrogen substitutes for oxygen to form PO3N structural units with small concentrations of P-N=P due to some Li ↔ P disorder in the structure. The ionic conductivity of Li2.88PO3.73N0.14 (σ25°C ∼ 10-13 S · cm-1) is several orders of magnitude higher than that of γ-Li3PO4 (σ25°C ∼ 10-18 S · cm-1).

AB - A crystalline form of lithium phosphorus oxynitride, Li2.88 PO3.73N0.14, has been prepared by solid state reaction between Li3N and LiPO3 under a flowing N2 atmosphere. The structure of the oxynitride was refined by Rietveld analysis of neutron powder diffraction data using the orthorhombic unit cell of γ-Li3PO4 with space group Pmnb. High-performance liquid chromatography measurement indicates that most nitrogen substitutes for oxygen to form PO3N structural units with small concentrations of P-N=P due to some Li ↔ P disorder in the structure. The ionic conductivity of Li2.88PO3.73N0.14 (σ25°C ∼ 10-13 S · cm-1) is several orders of magnitude higher than that of γ-Li3PO4 (σ25°C ∼ 10-18 S · cm-1).

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U2 - 10.1006/jssc.1995.1140

DO - 10.1006/jssc.1995.1140

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SN - 0022-4596

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EP - 323

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

IS - 2

ER -

Synthesis, crystal structure, and ionic conductivity of a polycrystalline lithium phosphorus oxynitride with the γ-Li₃PO₄ structure

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