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Lee, Kyu Tae
Electrochemical Energy Systems Laboratory
Research Interests
  • Electrode materials for Li-ion batteries
  • Na-ion & Mg-ion batteries
  • Li-Air & Li-Sulur batteries
  • Design of advanced materials with new crystal structures
  • Fundamental electrochemistry & solid state chemistry

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Topochemical Synthesis of Sodium Metal Phosphate Olivines for Sodium-Ion Batteries

Cited 78 times inthomson ciCited 65 times inthomson ci
Title
Topochemical Synthesis of Sodium Metal Phosphate Olivines for Sodium-Ion Batteries
Author
Lee, Kyu TaeRamesh, T. N.Nan, F.Botton, G.Nazar, Linda F.
Keywords
cathode material; low-temperature synthesis; Na-ion battery; Olivine; topotactic
Issue Date
2011-08
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.23, no.16, pp.3593 - 3600
Abstract
New metastable olivine phases of sodium metal phosphates, Na[Mn 1-xMx]PO4 (M = Fe, Ca, Mg), nanorods are synthesized by a simple solid-state reaction at low temperature (≥100 °C) by means of a topotactic molten salt reaction that converts NH 4[Mn1-xMx]PO4•H2O (M = Fe, Ca, Mg) to Na[Mn1-xMx]PO4. Their crystal structures are characterized via XRD Rietveld refinement and electron diffraction. A full range of solid solution behavior was observed for olivine Na1-xMn0.5Fe0.5PO4, in contrast to that of LiMPO4 (M = Fe, Mn) olivine materials, and is ascribed to ion size effects. The solid solution behavior of NaMn0.5Fe 0.5PO4 was confirmed by electrochemical characterization.
URI
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DOI
10.1021/cm200450y
ISSN
0897-4756
Appears in Collections:
ECHE_Journal Papers
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