62 results about "Lithium zirconate" patented technology

The invention provides a titanium composite, which comprises lithium-titanium composite oxide and a lithium compound, wherein the lithium compound comprises the lithium-titanium compound oxide; and the lithium compound is at least one of lithium zirconate, lithium vanadate, lithium metasilicate, lithium metamanganate, lithium carbonate, lithium phosphate, lithium aluminate, lithium hydrogenphosphate, lithium hydroxide, lithium chlorate, lithium sulfate, lithium molybdate, lithium chloride, lithium borate, lithium citrate, lithium tartrate, lithium acetate and lithium oxalate. The composite can realize the high-rate and quick charge and discharge of a battery, improve the recycling performance and high temperature storage performance of materials and in particular improve the equality safety of batteries using high-performance titanium materials. The invention also provides a preparation method for the material, which is simple, easy to operate, high in yield and suitable for massive production. The composite of the invention has a wide application range, can be used alone or in combination with other electrode active materials as a cathode active material of various lithium ion batteries or an electrode material of capacitors.

Disclosed is a positive electrode active material for a nonaqueous electrolyte secondary battery having at least a lithium-transition metal composite oxide of a layer structure, in which an existence ratio of at least one selected from the group consisting of elements which may become tetravalent and magnesium is 20% or more on a surface of the lithium-transition metal composite oxide. By use of this positive electrode active material, a nonaqueous electrolyte secondary battery having excellent battery characteristics, specifically, having excellent high rate characteristics, cycle characteristics, low-temperature characteristics, thermal stability, and the like, under the even more harsh environment for use can be realized.

The invention discloses a preparation method of a fast ion conductor and conducting polymer dual-modified ternary cathode material for a lithium-ion battery. According to the material, a ternary cathode material for a lithium-ion battery is taken as a core, a fast ion conductor is taken as a first coating layer, a conducting polymer is taken as a second coating layer and the fast ion conductor isany one of lithium vanadate, lithium metaaluminate and lithium zirconate. The fast ion conductor and the ternary cathode material are firstly mixed evenly and ground; the ternary cathode material is coated with the fast ion conductor by using a high-temperature solid state method; the conducting polymer and the ternary cathode material coated with the fast ion conductor are mixed evenly and milled; and the ternary cathode material coated with the fast ion conductor is coated with the conducting polymer to finally obtain the fast ion conductor and conducting polymer dual-modified ternary cathode material for the lithium-ion battery. The fast ion conductor is combined with the conducting polymer to modify the ternary cathode material, so that the ternary cathode material has excellent cycleperformance and good rate capability.