摘要:
The object of the present invention is to provide a method for producing simply a positive electrode active material which can further increase charge-discharge capacity of secondary batteries when the positive electrode active material is used for positive electrode of secondary batteries, particularly non-aqueous electrolyte secondary batteries. A method for producing a positive electrode active material includes the step of heat-treating a lithium mixed metal oxide represented by the formula Li2MO3 in the presence of a hydride wherein M is at least one element selected from the group consisting of Ti, V, Mn, Fe, Co and Ni.
摘要:
The object of the present invention is to provide a method for producing simply a positive electrode active material which can further increase charge-discharge capacity of secondary batteries when the positive electrode active material is used for positive electrode of secondary batteries, particularly non-aqueous electrolyte secondary batteries. A method for producing a positive electrode active material includes the step of heat-treating a lithium mixed metal oxide represented by the formula Li2MO3 in the presence of a hydride wherein M is at least one element selected from the group consisting of Ti, V, Mn, Fe, Co and Ni.
摘要:
The present invention provides a method of producing a lithium mixed metal oxide, a lithium mixed metal oxide and a nonaqueous electrolyte secondary battery. The method includes a step of calcining a mixture of one or more compounds of M wherein M is one or more elements selected from the group consisting of nickel, cobalt and manganese, and a lithium compound, in the presence of one or more inactive fluxes selected from the group consisting of a fluoride of A, a chloride of A, a carbonate of A, a sulfate of A, a nitrate of A, a phosphate of A, a hydroxide of A, a molybdate of A and a tungstate of A, wherein A is one or more elements selected from the group consisting of Na, K, Rb, Cs, Ca, Mg, Sr and Ba. The lithium mixed metal oxide contains nickel, cobalt and manganese, has a BET specific surface area of from 3 m2/g to 15 m2/g, and has an average particle diameter within a range of 0.1 μm or more to less than 1 μm, the diameter determined by a laser diffraction scattering method.
摘要:
There is provided a method for producing an active material for a nonaqueous secondary battery, including firing an adherend in which a compound containing an element A (at least one element selected from among B, Al, Ga, In, Si, Ge, Sn, Mg and transition metal elements) is adhered to a particle surface of a material capable of being doped and dedoped with lithium ions, in a water-containing atmosphere so that weight increasing rate of the adherend is in a range of 0.1% by weight or more and 5.0% by weight or less, and firing the adherend.
摘要:
A lithium mixed metal oxide comprising Ni, Mn and Fe and having a BET specific surface area of 2 m2/g or more and 30 m2/g or less. A method of producing a lithium mixed metal oxide, comprising bringing an aqueous solution containing Ni, Mn, Fe and Cl into contact with an alkali to obtain a coprecipitate, and calcining a mixture of the coprecipitate and a lithium compound by maintaining the mixture at a temperature of lower than 900° C. A positive electrode active material for nonaqueous electrolyte secondary battery, comprising the lithium mixed metal oxide described above or the lithium mixed metal oxide obtained by the method of producing a lithium mixed metal oxide described above as a main ingredient. A positive electrode for nonaqueous electrolyte secondary battery having the positive electrode active material for nonaqueous electrolyte secondary battery described above.
摘要:
A lithium mixed metal oxide comprising Ni, Mn and Fe and having a BET specific surface area of 2 m2/g or more and 30 m2/g or less. A method of producing a lithium mixed metal oxide, comprising bringing an aqueous solution containing Ni, Mn, Fe and Cl into contact with an alkali to obtain a coprecipitate, and calcining a mixture of the coprecipitate and a lithium compound by maintaining the mixture at a temperature of lower than 900° C. A positive electrode active material for nonaqueous electrolyte secondary battery, comprising the lithium mixed metal oxide described above or the lithium mixed metal oxide obtained by the method of producing a lithium mixed metal oxide described above as a main ingredient. A positive electrode for nonaqueous electrolyte secondary battery having the positive electrode active material for nonaqueous electrolyte secondary battery described above. A nonaqueous electrolyte secondary battery having the positive electrode for nonaqueous electrolyte secondary battery described above.
摘要:
There is provided a method for producing an active material for a nonaqueous secondary battery, including firing an adherend in which a compound containing an element A (at least one element selected from among B, Al, Ga, In, Si, Ge, Sn, Mg and transition metal elements) is adhered to a particle surface of a material capable of being doped and dedoped with lithium ions, in a water-containing atmosphere so that weight increasing rate of the adherend is in a range of 0.1% by weight or more and 5.0% by weight or less, and firing the adherend.
摘要:
The present invention provides a method of producing a lithium mixed metal oxide, a lithium mixed metal oxide and a nonaqueous electrolyte secondary battery. The method includes a step of calcining a mixture of one or more compounds of M wherein M is one or more elements selected from the group consisting of nickel, cobalt and manganese, and a lithium compound, in the presence of one or more inactive fluxes selected from the group consisting of a fluoride of A, a chloride of A, a carbonate of A, a sulfate of A, a nitrate of A, a phosphate of A, a hydroxide of A, a molybdate of A and a tungstate of A, wherein A is one or more elements selected from the group consisting of Na, K, Rb, Cs, Ca, Mg, Sr and Ba. The lithium mixed metal oxide contains nickel, cobalt and manganese, has a BET specific surface area of from 3 m2/g to 15 m2/g, and has an average particle diameter within a range of 0.1 μm or more to less than 1 μm, the diameter determined by a laser diffraction scattering method.
摘要:
The present invention provides an electrode active material, an electrode and a non-aqueous electrolyte secondary battery. The electrode active material contains the following powder (A) and powder (B):(A) a powder of a lithium mixed metal oxide that is represented by the following formula (1) and has a layered rock-salt type crystal structure, the powder having a BET specific surface area of from 3 m2/g to 30 m2/g, Li(Ni1−(x+y)MnxFey)O2 (1) wherein x is within a range of more than 0 to less than 1, y is within a range of more than 0 to not more than 0.1, and x+y is within a range of more than 0 to less than 1; (B) a powder of a lithium mixed metal oxide that has a spinel type crystal structure. The electrode contains the electrode active material. The non-aqueous electrolyte secondary battery includes the electrode as a positive electrode.
摘要:
The present invention provides a non-aqueous electrolyte secondary battery capable of exhibiting high discharge capacity maintenance rate at a high current rate, a lithium composite metal oxide useful therefor, and a method for producing the lithium composite metal oxide. This lithium composite metal oxide comprises Ni, Mn, Co, and Fe, and the BET specific surface area thereof is 3 m2/g to 15 m2/g. According to the present invention, a non-aqueous electrolyte secondary battery which exhibits high discharge capacity maintenance rate at a high current rate compared to a conventional lithium secondary battery can be obtained, and thus the secondary battery is very useful especially for applications where high discharge capacity maintenance rate at a high current rate is required, that is, non-aqueous electrolyte secondary batteries for automobiles or for power tools such as electric tools.