PATENT CLAIM ANALYSIS

Application Number: 15751350
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-08
Patent Classification: ["429", "223000"]

Abstract:
The present invention provides a positive electrode active material for a secondary battery, the positive electrode active material including a lithium composite metal oxide particle represented by Formula 1 below, and a secondary battery including the same. Li a Ni 1−x−y Co x M1 y M2 z M3 w O 2   [Formula 1] In Formula 1, M1 is a metal element whose surface energy (ΔE surf ) calculated by Equation 1 below is −0.5 eV or higher, M2 is a metal element whose surface energy (ΔE surf ) calculated by Equation 1 below is −1.5 eV or higher and less than −0.5 eV, M3 is a metal element whose surface energy (ΔE surf ) calculated by Equation 1 below is less than −1.5 eV, and 1.0≤a≤1.5, 0<x≤0.5, 0<z≤0.05, 0.002≤w≤0.1, 0<x+y≤0.7. Δ   E surf =  E surf   2 - E surf   1 =  ( E slab   2 - E bulk ) - ( E slab   1 - E bulk ) [ Equation   1 ] In Equation 1 above, E surf2  represents an extent to which a metal element is oriented toward the outermost surface of the lithium composite metal oxide particle, E surf1  represents an extent to which the metal element is oriented toward a central portion of the lithium composite metal oxide particle, E slab1  is energy of a slab model of the lithium composite metal oxide particle when the metal element is at the central portion of the lithium composite metal oxide particle, E slab2  is energy of a slab model of the lithium composite metal oxide when the metal element is at the outermost surface of the lithium composite metal oxide, and E bulk  is energy of a bulk model corresponding to each of the slab models.

Claim (Index 11):
The positive electrode active material of  claim 1 , wherein the positive electrode active material has an average particle size (D 50 ) of 4 \u03bcm to 20 \u03bcm.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 88.0
- Lexical Diversity: 3.38776
- Patent Class: 429.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['15743916', '15574071', '15567213', '15548281', '14610804']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8843061813229562
- 35 USC 102 Novelty (BERT): 0.5190089566797417
- Combined Prediction Score: 0.8477764588586348
- Mean Citation Score: 280.09637200000003
- Max Citation Score: 309.66818
- Similarity Product: 184.95955978217484

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

Dataset: test