PATENT CLAIM ANALYSIS

Application Number: 15890248
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-06
Patent Classification: ["252", "182100"]

Abstract:
A non-aqueous electrolyte secondary battery is provided that has both good safety and durability characteristics while at the same time has high charge/discharge capacity. The cathode active material for a non-aqueous electrolyte secondary battery of the present invention is a lithium nickel composite oxide to which at least two or more kinds of metal elements including aluminum are added, and comprises secondary particles that are composed of fine secondary particles having an average particle size of 2 μm to 4 μm, and rough secondary particles having an average particle size of 6 μm to 15 μm, with an overall average particle size of 5 μm to 15 μm; where the aluminum content of fine secondary particles (metal mole ratio: SA) is greater than the aluminum content of rough secondary particles (metal mole ratio: LA), and preferably the aluminum concentration ratio (SA/LA) is within the range 1.2 to 2.6.

Claim (Index 9):
A manufacturing method for a cathode active material for a non-aqueous electrolyte secondary battery comprising steps of:\n adding and mixing an aluminum compound with a nickel composite hydroxide; performing oxidizing roasting of the obtained nickel composite hydroxide that contains aluminum; further adding and mixing a lithium compound with the obtained nickel composite oxide that contains aluminum; and baking the obtained mixture to obtain a cathode active material for a non-aqueous electrolyte secondary battery composed of a lithium nickel composite oxide; wherein, in the step of adding and mixing an aluminum compound with the nickel composite hydroxide, the aluminum compound is added and mixed with the nickel composite hydroxide composed of fine secondary particles having an average particle size of 2 \u03bcm to 4 \u03bcm and having a particle size distribution according to laser diffraction scattering measurement of 0.5 \u03bcm to 6 \u03bcm, and the nickel composite hydroxide composed of rough secondary particles having an average particle size of 6 \u03bcm to 15 \u03bcm and having a particle size distribution according to laser diffraction scattering measurement of 3 \u03bcm to 25 \u03bcm, so that a ratio of the aluminum content expressed as a metal mole ratio of the fine secondary particles with respect to a ratio of the aluminum content expressed as a metal mole ratio of the rough secondary particles is within the range 1.12 to 2.6; to obtain a nickel composite oxide that contains aluminum composed of secondary particles having an overall average particle size of 5 \u03bcm to 15 \u03bcm.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 1.85227
- Patent Class: 252.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['13577670', '15798817', '15656567', '14366871', '15764453']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8093684698128271
- 35 USC 102 Novelty (BERT): 0.541620118031282
- Combined Prediction Score: 0.7825936346346726
- Mean Citation Score: 344.9455680000001
- Max Citation Score: 394.43057000000016
- Similarity Product: 317.2257707723475

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

Dataset: test