H - Electricity – 01 – M
Patent
H - Electricity
01
M
H01M 4/48 (2006.01) C01B 6/24 (2006.01) H01M 4/36 (2006.01) H01M 4/52 (2006.01)
Patent
CA 2067286
Hydrides of lithiated nickel dioxide are disclosed, prepared by providing a substantially homogeneous dry intermediate mixture of a starting material containing a nickel compound selected from nickel oxide, nickel hydroxide and mixtures thereof, and optionally including one or more oxides or hydroxides of a transition metal selected from cobalt, iron, chromium, titanium, manganese and vanadium, together with about a 25% stoichiometric excess of lithium hydroxide. The mixture is heat-treated at a temperature above about 600°C in an atmosphere having a partial pressure of water vapor greater than about two torr. Electrochemical cells are also disclosed, incorporating the disclosed hydrides as a cathode-active material.
Hydrures de dioxyde de nickel lithié, préparés en fournissant un mélange intermédiaire sec substantiellement homogène d'un produit de départ contenant un composé de nickel choisi parmi l'oxyde de nickel, l'hydroxyde de nickel et de mélanges de ces derniers, et comprenant au choix un ou plusieurs oxydes ou hydroxydes d'un métal de transition choisi parmi le cobalt, le fer, le chrome, le titane, le manganèse et le vanadium, et avec une quantité d'hydroxyde de lithium supérieure de 25 % à la quantité stoechiométrique. Le mélange est traité thermiquement à une température supérieure à 600 degrés C dans une atmosphère dans laquelle la pression partielle de la vapeur d'eau est supérieure à deux torrs. De plus, on dévoile des cellules électrochimiques, dont la matière cathodique active incorpore ces hydrures.
Moffat & Co.
Moli Energy (1990) Limited
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