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Kim, Youngsik
YK Research
Research Interests
  • Ionic conducting ceramic electrolyte membranes, energy conversion and storage materials and devices

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Lithium Ion Intercalation Performance of Niobium Oxides: KNb5O13 and K6Nb10.8O30

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Title
Lithium Ion Intercalation Performance of Niobium Oxides: KNb5O13 and K6Nb10.8O30
Author
Han, Jian-TaoLiu, Dong-QiangSong, Sang-HoonKim, YoungsikGoodenough, John B.
Keywords
Carbonate-based electrolytes; Li batteries; Li insertion; Lithium ions; Nanocrystallines; Niobates; Niobium oxides; Polycrystalline; Reversible capacity; Reversible insertion; TiO; Voltage ranges
Issue Date
2009-10
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.21, no.20, pp.4753 - 4755
Abstract
The position of the Nb5+ Nb4 couple in two oxide hosts, KNb5O13 and K6Nb10.8O 30, that exhibit reversible Li insertion in the targeted voltage range has been reported. Polycrystalline KNb5O13 and K6Nb10.8O30, were prepared by conventional solid state reaction (SSR). Carbonate-based electrolytes are presently used in rechargeable Li batteries. The potassium-niobate family having tunnels occupied by K+ ions offer reversible insertion of Li at acceptable capacities with voltages within the targeted voltage range of 1.0-1.5 Versus Li+/ Li. Improvement in reversible capacity should be possible with smaller particles crystallite size has a strong influence on reversible capacity, with nanocrystalline A1NbO4 and TiO2.
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DOI
10.1021/cm9024149
ISSN
0897-4756
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ECHE_Journal Papers
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