PATENT CLAIM ANALYSIS

Application Number: 15748747
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2019-01
Patent Classification: ["252", "500000"]

Abstract:
The present invention relates to a negative electrode active material for a lithium secondary battery, which comprises graphite having an alkali carbonate layer formed on a surface thereof, wherein the graphite has an I D /I G  ratio of 0.05 to 0.3 in Raman spectroscopy, and a method of preparing the same, wherein, since the negative electrode active material for a lithium secondary battery of the present invention includes the graphite having an alkali carbonate layer formed on the surface thereof, the alkali carbonate layer contributes to the formation of a stable solid electrolyte interface (SEI) to reduce a side reaction with an electrolyte solution including propylene carbonate. Thus, since low-temperature performance and initial efficiency of the lithium secondary battery may be improved, the negative electrode active material for a lithium secondary battery of the present invention is suitable for the preparation of the lithium secondary battery.

Claim (Index 10):
The method of  claim 9 , wherein the I D  is a peak value located at a wavelength near 1350 cm \u22121 , the I G  is a peak value located at a wavelength near 1580 cm \u22121 , and the I D /I G  ratio is an intensity ratio of the peaks.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 86.0
- Lexical Diversity: 2.12
- Patent Class: 252.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: True
- Related Applications: ['14651073', '10247511', '13816672', '15664329', '16085333']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8331585803992457
- 35 USC 102 Novelty (BERT): 0.5082082228030411
- Combined Prediction Score: 0.8006635446396253
- Mean Citation Score: 252.98346400000003
- Max Citation Score: 260.51697
- Similarity Product: 157.7099461772311

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