PATENT CLAIM ANALYSIS

Application Number: 15761877
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-10
Patent Classification: ["423", "598000"]

Abstract:
Lithium titanate, Li 4 Ti 5 O 12 , particles containing surface hydroxyl groups are susceptible to unwanted gas generation (such as hydrogen) in the presence of water contamination when the particles are used as active anode electrode material in lithium-ion cells operating with an anhydrous liquid electrolyte. In accordance with this disclosure, the hydroxyl groups on the surfaces of the particles are reacted with one of a group of selected agents containing organic alkoxy groups to form hydrophobic moieties on the surfaces of the particles which effectively block water molecules from the surfaces of lithium titanate particles in the anode of the cell.

Claim (Index 16):
A method of preparing lithium titanate (Li 4 Ti 5 O 12 ) particles, characterized by the presence of hydroxyl groups on the surfaces of the particles, for use as anode material particles in an electrochemical cell with an anhydrous electrolyte, the preparation of the lithium titanate particles being performed to replace the hydroxyl groups on the surfaces of the particles with hydrophobic groups for isolating the lithium titanate from water molecules produced as a contaminant in the operation of the electrochemical cell; the method comprising:\n reacting the hydroxyl groups on the surfaces of the particles with a compound selected from the group consisting of a tetravalent silicon-containing compound and a tetravalent titanium-containing compound, the selected compound containing alkoxy groups or alkoxy groups and alkyl groups, such that the reaction of the selected compound with the hydroxyl groups on the lithium titanate particles produces an alcohol as a product removable from the particles, and molecular moieties of the remainder of the molecules of the selected compound are attached to the surfaces of the lithium titanate particles in place of the hydroxyl groups, the remaining molecular moieties containing alkoxy groups or a combination of alkoxy groups and alkyl groups such that the remaining molecular moieties attached to the surfaces of the lithium titanate particles can serve as barriers to water contamination when the lithium titanate particles are subsequently placed and used in an electrochemical cell.

Metadata:
- Claim Count in Document: 2.0
- Percentile: 90.0
- Lexical Diversity: 1.57143
- Patent Class: 423.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14138267', '12924211', '12928927', '13654905', '14175944']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.775819345033467
- 35 USC 102 Novelty (BERT): 0.500703739233753
- Combined Prediction Score: 0.7483077844534956
- Mean Citation Score: 232.36014
- Max Citation Score: 237.16124
- Similarity Product: 157.78529821528912

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

Dataset: test