ALKALI METAL TITANIUM OXIDE HAVING ANISOTROPIC STRUCTURE, TITANIUM OXIDE, ELECTRODE ACTIVE MATERIAL CONTAINING SAID OXIDES, AND ELECTRICITY STORAGE DEVICE
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United States of America Patent
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Jun 30, 2016
app pub date -
Aug 14, 2014
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Aug 19, 2013
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Provided are an alkali metal titanium oxide and titanium oxide that have a novel form and are industrially advantageous. The alkali metal titanium oxide is obtained by firing the result of impregnating the surface and interior of pores of porous titanium compound particles with an aqueous solution of an alkali metal-containing component, and has the form of secondary particles resulting from the aggregation of primary particles having an anisotropic structure. The titanium oxide is obtained using the alkali metal titanium oxide as a starting material. The secondary particles can further assume a clumped structure, have a suitable size, and are easily handled, and so are industrially advantageous. In particular, the H2Ti12O25 of the present invention is an electrode material that is for a lithium secondary battery, has a high capacity and a superior initial charging/discharging rate and cycling characteristics, and has an extremely high practical value.
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