PATENT CLAIM ANALYSIS

Application Number: 15918956
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-07
Patent Classification: ["429", "223000"]

Abstract:
An object of the present invention is to provide nickel cobalt manganese composite hydroxide particles having a small particle diameter and a uniform particle size distribution, and a method for producing the same. [Solution] A method for producing a nickel cobalt manganese composite hydroxide by a crystallization reaction is provided. The method includes: a nucleation step of performing nucleation by controlling a pH of an aqueous solution for nucleation including metal compounds containing nickel, cobalt and manganese, and an ammonium ion donor to 12.0 to 14.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard; and a particle growth step of growing nuclei by controlling a pH of an aqueous solution for particle growth containing nuclei formed in the nucleation step to 10.5 to 12.0 in terms of the pH as measured at a liquid temperature of 25° C. as a standard.

Claim (Index 12):
A method for producing a cathode active material for a nonaqueous electrolyte secondary battery being a method for producing a cathode active material represented by a general formula: Li 1+u Ni x Co y Mn z M t O 2 , where \u22120.05\u2264u\u22640.20, x+y+z+t=1, 0.3\u2264x\u22640.7, 0.1\u2264y\u22640.4, 0.1\u2264z\u22640.4, 0\u2264t\u22640.02, and M is at least one additional element selected from the group consisting of Ti, V, Cr, Al, Mg, Zr, Nb, Mo, Hf, Ta and W, the cathode active material including a lithium nickel cobalt manganese composite oxide of a composite oxide containing lithium with a layer structure belonged in hexagonal crystal system; and\n the method comprising: a step of subjecting to a heat treatment nickel cobalt manganese composite hydroxide particles represented by a general formula: Ni x Co y Mn z M t (OH) 2+\u03b1 , where 0.3\u2264x\u22640.7, 0.1\u2264y\u22640.4, 0.1\u2264z\u22640.5, 0\u2264t\u22640.02, x+y+z+t=1, 0\u2264\u03b1\u22640.5, and M is at least one additional element selected from the group consisting of Ti, V, Cr, Al, Mg, Zr, Nb, Mo, Hf, Ta and W, the nickel cobalt manganese composite hydroxide particles being spherical secondary particles formed by aggregation in a random direction of a plurality of platelike primary particles having an average thickness of 10 to 300 nm and an average length of 100 to 3000 nm; a mixing step of forming a mixture by mixing a lithium compound with particles after the heat treatment, and adjusting a ratio of a sum of the numbers of atoms of metals other than lithium to the number of atoms of lithium included in the mixture to 1:0.95 to 1.20; and a firing step of firing the mixture formed in the mixing step at a temperature of 800\u00b0 C. to 1000\u00b0 C.

Metadata:
- Claim Count in Document: 5.0
- Percentile: 90.0
- Lexical Diversity: 2.16216
- Patent Class: 429.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13513244', '15673650', '14001722', '13513240', '15656567']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8713803626550998
- 35 USC 102 Novelty (BERT): 0.534922172513022
- Combined Prediction Score: 0.837734543640892
- Mean Citation Score: 340.267982
- Max Citation Score: 374.52866
- Similarity Product: 356.3819899906612

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test