PATENT CLAIM ANALYSIS

Application Number: 16057982
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2018-12
Patent Classification: ["252", "500000"]

Abstract:
The present invention provides a precursor of positive electrode active substance particles for non-aqueous electrolyte secondary batteries which have a high discharge voltage and a high discharge capacity, hardly suffer from side reactions with an electrolyte solution, and are excellent in cycle characteristics, positive electrode active substance particles for non-aqueous electrolyte secondary batteries, and processes for producing these particles, and a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles for non-aqueous electrolyte secondary batteries having a spinel structure with a composition represented by the following chemical formula (1), in which the positive electrode active substance particles satisfy the following characteristic (A) and/or characteristic (B) when indexed with Fd-3m in X-ray diffraction thereof: (A) when indexed with Fd-3m in X-ray diffraction of the positive electrode active substance particles, a ratio of I(311) to I(111) [I(311)/I(111)] is in the range of 35 to 43%, and/or (B) when indexed with Fd-3m in X-ray diffraction of the positive electrode active substance particles, a gradient of a straight line determined by a least square method in a graph prepared by plotting sin θ in an abscissa thereof and B cos θ in an ordinate thereof wherein B is a full-width at half maximum with respect to each peak position 2θ (10 to 90°) is in the range of 3.0×10 −4  to 20.0×10 −4 ; and Li 1+x Mn 2-y-z Ni y M z O 4   Chemical Formula (1) wherein x, y, z fall within the range of −0.05·x·0.15, 0.4·y·0.6 and 0·z·0.20, respectively; and M is at least one element selected from the group consisting of Mg, Al, Si, Ca, Ti, Co, Zn, Sb, Ba, W and Bi.

Claim (Index 1):
Positive electrode active substance particles for non-aqueous electrolyte secondary batteries having a spinel structure with a composition represented by the following chemical formula (1), in which the positive electrode active substance particles have an average primary particle diameter of 1.0 to 4.0 \u03bcm, an average secondary particle diameter (D50) of 4 to 30 \u03bcm and a BET specific surface area of 0.3 to 1.0 m 2 /g, and a product y of the average secondary particle diameter (D50) and the BET specific surface area of the positive electrode active substance particles is in the range of y\u226410.0\u00d710 \u22126  m 3 /g:\n Li 1+x Mn 2-y-z Ni y M z O 4 \u2003\u2003Chemical Formula (1): wherein x, y, z fall within the range of \u22120.05\u2264x\u22640.15, 0.4\u2264y\u22640.6 and 0\u2264z\u22640.20, respectively; and M is at least one element selected from the group consisting of Mg, Al, Si, Ca, Ti, Co, Zn, Sb, Ba, W and Bi.

Metadata:
- Claim Count in Document: 17.0
- Percentile: 96.0
- Lexical Diversity: 2.25676
- Patent Class: 252.0
- Transitional Phrase Type: closed
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['14007732', '14380523', '13144361', '15386406', '14776165']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8795905932073
- 35 USC 102 Novelty (BERT): 0.5772126632470911
- Combined Prediction Score: 0.8493528002112791
- Mean Citation Score: 415.865104
- Max Citation Score: 539.28735
- Similarity Product: 406.3195802039624

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