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Browsing by Author "Thackeray, MM"

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  • Thackeray, MM; Rossouw, MH; Gummow, RJ; Liles, DC; Pearce, K; De Kock, A; David, WIF; Hull, s (Pergamon Press Ltd, 1993-06)
    A pure and highly crystalline form of ramsdellite-MnO2 has been synthesized by acid treatment of the spinels LiMn2O4 and Li2Mn4O9 at 95°C. Although the ramsdellite-MnO2 framework remains intact on lithiation at 70°C, the ...
  • Gummow, RJ; Liles, DC; Thackeray, MM; David, WIF (Pergamon-Elsevier Science Ltd, 1993-11)
    The structures of LT-LiCoO2 (synthesised by reaction of Li2CO3 and CoCO3 at 400-degrees-C) and its delithiated product LT-Li0.4CoO2 have been reinvestigated by neutron powder diffraction. Despite an unusually close similarity ...
  • Ferg, E; Gummow, RJ; De Kock, A; Thackeray, MM (Electrochemical Society Inc, 1994-11)
    Anodes of Li4Mn5O12, Li4Ti5O12, and Li2Mn4O9 with a spinel-type structure have been evaluated in room-temperature lithium cells. The cathodes that were selected for this study were the stabilized spinels, Li1.03Mn1.97O4 ...
  • Gummow, RJ; Liles, DC; Thackeray, MM (Pergamon-Elsevier Science Ltd, 1993-03)
    Rietveld refinements of X-ray data of LiCoO2 prepared at 400-degrees-C and a chemically-delithiated product Li0.5CoO2 using space group symmetries R3mBAR and Fd3m are reported. Refinements in both R3mBAR (layered-type ...
  • De Picciotto, LA; Adendorff, KT; Liles, DC; Thackeray, MM (Elsevier Science B.V., 1993-08)
    The crystal structures of Li1.2V3O8 and a lithiated product Li4.0V3O8 have been determined by single-crystal X-ray diffraction methods. The structure refinement of Li1.2V308 confirms that of Li1+xV3O8(x almost-equal-to 0) ...
  • Thackeray, MM; De Kock, A; David, WIF (Pergamon-Elsevier Science Ltd, 1993-10)
    Lithium-manganese-oxides prepared at moderate temperatures are under investigation as insertion electrodes for rechargeable lithium batteries. The structures of two defect-spinel compounds synthesised by the reaction of ...
  • Thackeray, MM; De Kock, A; David, WIF (Pergamon Press Ltd, 1993-10)
    Lithium-manganese-oxides prepared at moderate temperatures are under investigation as insertion electrodes for rechargeable lithium batteries. The structures of two defect-spinel compounds synthesized by the reaction of ...
  • Van Zyl, A; Thackeray, MM; Duncan, GK; Kingon, AI; Heckroodt, RO (Pergamon-Elsevier Science Ltd., 1993-02)
    Two aluminium oxyhydroxides, boehmite and pseudoboehmite, and two aluminium hydroxides, bayerite and gibbsite, have been investigated as precursors for the synthesis of the solid electrolyte, beta alumina. Reaction pathways ...
  • Thackeray, MM; Rossouw, MH (Academic Press Inc, 1994-12)
    The synthesis of lithium-manganese-oxide spinels by reaction of Li2CO3 and MnCO3 in air and under nitrogen to T(max) = 600°C has been investigated by thermogravimetric analysis and differential scanning calorimetry. When ...
  • Thackeray, MM; Rossouw, MH; De Kock, A; De la Harpe, AP; Gummow, RJ; Pearce, K; Liles, DC (Elsevier Science SA, 1993-03-15)
    Manganese dioxide has for many years found widespread use as a cathode material in aqueous Leclanche, zinc chloride and alkaline cells and, more recently, in nonaqueous lithium cells. However, despite the large number of ...