Westaim Technologies

Jack Wolstenholme

Larry Roy Morris

Wu Li

John Carleton Currie

Ernesto S Tachauer

A single calcination stage process for the synthesis of homogeneous crystalline lithium nickel cobalt dioxide from either a mechanical mixture of nickel and cobalt oxides, hydroxide or oxyhydroxide or a chemical precipitation of a homogeneous nickel cobalt hydroxide or cobalt nickel cobalt oxyhydroxide is provided. The reactants are calcined in the presence of lithium hydroxide and an alkali metal hydroxide under predetermined oxygen partial pressure and temperature conditions. The products of the process are characterized in having a lithium to transition metal ratio closely approximating to the desired theoretical value.

Synthesis of lithium nickel cobalt dioxide

A continuous process for the production of an oriented high modulus profile is provided together with the novel profiles produced thereby. A dry polymer feedstock is melted and extruded through a die to form a profile precursor having a constant cross-section and specific dimensions. Sequential passage of the profile precursor through roller dies reduces its thickness whilst imparting molecular orientation thereto. The profile is cooled under tension to freeze in the molecular orientation thereof.

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Edmonton, Canada

Jack Wolstenholme