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33961 results about "Manganese" patented technology

Manganese is a chemical element with the symbol Mn and atomic number 25. It is not found as a free element in nature; it is often found in minerals in combination with iron. Manganese is a transition metal with important industrial alloy uses, particularly in stainless steels.

Layered Lithium Nickel Manganese Cobalt Composite Oxide Powder For Material Of Positive Electrode Of Lithium Secondary Battery, Process For Producing The Same, Positive Electrode Of Lithium Secondary Battery Therefrom, And Lithium Secondary Battery

A powder of a layered lithium-nickel-manganese-cobalt composite oxide for use as a positive-electrode material for lithium secondary battery is provided which, when used as a positive-electrode material for lithium secondary battery, enables a cost reduction and higher safety to be reconciled with improved battery performances.
The powder of a layered lithium-nickel-manganese-cobalt composite oxide for use as a positive-electrode material for lithium secondary battery is composed of secondary particles formed by the aggregation of primary particles. It has a composition represented by the following formula (I), has a volume resistivity of 5×105 Ω·cm or lower in the state of being compacted at a pressure of 40 MPa, and has a value of C/S, wherein C is the concentration of carbon contained therein (% by weight) and S is the BET specific surface area thereof (m2/g), of 0.025 or smaller. The powder has been regulated so as to have a volume resistivity not higher than the specified value and a considerably reduced carbon content while having a composition in a limited range, whereby a cost reduction and higher safety can be reconciled with improved battery performances.
Li1+zNixMnyCo1−x−yOδ  (I)
(0<z≦0.91, 0.1≦x≦0.55, 0.20≦y≦0.90, 0.50≦x+y≦1, 1.9≦δ≦3)
Owner:MITSUBISHI CHEM CORP
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