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AssigneeToho Titanium Co., Ltd.
InventorsTetsuya Yamawaki, Kiyoshi Eto, Hideki Sakai
Estimating the term…
In a process for producing lithium titanate, a mixture of titanium dioxide and at least one lithium compound selected from the group consisting of lithium carbonate, lithium hydroxide, lithium nitrate, and lithium oxide is presintered at a temperature of 670° C. or more and less than 800° C. to yield a composition consisting of TiO2 and Li2TiO3 or a composition consisting of TiO2, Li2TiO3 and Li4Ti5O12. The composition is then sintered at a temperature in the range of 800 to 950° C.
A process for producing lithium titanate, comprising presintering a mixture of titanium dioxide and at least one lithium compound selected from the group consisting of lithium carbonate, lithium hydroxide, lithium nitrate, and lithium oxide for a duration of 30 minutes to 4 hours at a temperature of at least 600° C. and less than 800° C., to yield at least one of a composition comprising TiO2 and Li2TiO3 and a composition comprising TiO2, Li2TiO3 and Li4Ti5O12, and separately sintering the composition at a temperature of from 800° C. to 950° C.
Dependencies are inferred from the claim text.
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Titanates: alkali titanates
Based on titanium oxides or titanates: based on titanates
Milling: of calcined, sintered clinker or ceramics
Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof: electrodes based on…
Term ended 10 Feb 2020 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Technical Field
The present invention relates to a process for producing lithium titanate which is suitable for electrodes for lithium ion batteries used, for example, as backup power supplies for personal computers and for portable types of equipment and the like, and to lithium ion batteries using the same.
2. Background Art
The above are preferred embodiments. Other embodiments will be clear from further reading of specification.
The invention is explained more detailedly with reference to the examples hereinafter.
Sample No. 1