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Reversible electrochemical insertion of lithium in nanocrystalline lanthanide doped ceria thin films with the fluorite structure
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UNSPECIFIED (2001) Reversible electrochemical insertion of lithium in nanocrystalline lanthanide doped ceria thin films with the fluorite structure. SOLID STATE IONICS, 144 (3-4). pp. 287-293. ISSN 0167-2738.
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Abstract
Thin films of lanthanide doped ceria formula Ce(0.85)Ln(0.15)O(1.925) [Ln lanthanide (III)] and Ce0.85Y0.15O1.925 were deposited on ITO-coated glass substrates and characterised for structure, morphology, crystallite size, spectral transmittance before and after lithium insertion and the amount and reversibility of lithium insertion by cyclic voltammetry. The films were found to be smooth, continuous, single phase and crystalline at 450 degreesC, with the fluorite structure. Crystallite size values ranged from around 6 nm at 450 degreesC and 9-16 nm at 600 degreesC. Electrochemical studies showed a wide variance of behaviour towards reversible lithium intercalation with ionic size of the lanthanide, those doped with Nd, Dy and Y showing the highest charge capacities of around 20-25 mC. The films showed excellent transparency both before, after and during lithium insertion. (C) 2001 Elsevier Science B.V. All rights reserved.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry Q Science > QC Physics |
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Journal or Publication Title: | SOLID STATE IONICS | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0167-2738 | ||||
Official Date: | December 2001 | ||||
Dates: |
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Volume: | 144 | ||||
Number: | 3-4 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 287-293 | ||||
Publication Status: | Published |
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