Abstract
We prepared Li-intercalated layered niobium oxide LixACa2 Nb3O10 (A = K, Rb, Cs) an electrochemical technique. The host compounds ACa2Nb3O10 were synthesized by a solid state reaction method at 850 - 1150°C for 10 - 12h. Each of the cyclic voltammograms of these compounds had one cathodic peak at approx. -3 V, indicating that the Li-intercalation occurred at this voltage. All of the intercalated compounds LixACa2Nb3O10 (A = K, Rb, Cs) showed superconductivity at 4 - 5 K, and their x-ray diffraction pattern remained almost unchanged in spite of the Li-intercalation. For LixRbCa2Nb3O10, no superconductivity appeared up to x = 0.34 and 0.46 Tc (determined as the onset of the Missner effect) was constant at 4K, and for x=0.62 Tc decreased slightly to 3K.
Original language | English |
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Pages (from-to) | 1124-1127 |
Number of pages | 4 |
Journal | Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy |
Volume | 47 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2000 Oct |
ASJC Scopus subject areas
- Mechanical Engineering
- Industrial and Manufacturing Engineering
- Metals and Alloys
- Materials Chemistry