| Abstract
| - Vanadium oxide nanotubes have been formed from the layered vanadium oxide precursorV2O5+δ[C12H25NH3]. Both the precursor and tubes have been characterized. The blacknanotubes have a relatively low thermal stability in oxygen, being oxidized to V2O5 below200 °C. A new manganese vanadium oxide nanotube, Mn0.1VO2.5+δ·nH2O, has beensynthesized by ion exchange. These manganese tubes have a tetragonal layer with a = 6.157(3) Å and an interlayer spacing c = 10.52 (3) Å. The nanotubes react with lithium chemicallyand are also electrochemically active in lithium cells. Two lithium atoms per vanadium canbe incorporated chemically from n-butyllithium into both the manganese and the alkylammonium nanotubes. The manganese compound electrochemically intercalates 0.5 lithiumper vanadium to a 2 V cutoff, giving a capacity of 140 A h/kg.
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