PATENT CLAIM ANALYSIS

Application Number: 15947190
Application Type: Utility
Filing Date: 2018-04
Publication Date: 2019-10
Patent Classification: ["429", "326000"]

Abstract:
A method of producing a pre-selenized (selenium-preloaded) active cathode layer for a rechargeable alkali metal-selenium cell; the method comprising: (a) Preparing an integral layer of porous graphitic structure having a specific surface area greater than 100 m 2 /g; (b) Preparing an electrolyte comprising a solvent and a selenium source; (c) Preparing an anode; and (d) Bringing the integral layer and the anode in ionic contact with the electrolyte and imposing an electric current between the anode and the integral layer (serving as a cathode) to electrochemically deposit nanoscaled selenium particles or coating on the graphene surfaces. The selenium particles or coating have a thickness or diameter smaller than 20 nm (preferably <10 nm, more preferably <5 nm or even <3 nm) and occupy a weight fraction of at least 70% (preferably >90% or even >95%).

Claim (Index 1):
An electrochemical method of producing a pre-selenized active cathode layer for a rechargeable alkali metal-selenium cell, said method comprising:\n (a) preparing an integral layer of porous graphitic structure having massive graphene surfaces with a specific surface area greater than 100 m 2 /g, wherein said porous graphitic structure comprises a graphene material selected from pristine graphene, graphene oxide, reduced graphene oxide, graphene fluoride, graphene chloride, graphene bromide, graphene iodide, hydrogenated graphene, nitrogenated graphene, boron-doped graphene, nitrogen-doped graphene, chemically functionalized graphene, or a combination thereof; an exfoliated graphite material selected from exfoliated graphite worms, expanded graphite flakes, or recompressed graphite worms or flakes; or a mixture of graphene material and exfoliated graphite material, and wherein said porous graphitic structure comprises multiple sheets of said graphene material or multiple flakes of said exfoliated graphite material that are intersected or interconnected to form said integral layer and may further comprise an optional binder of 0-10% by weight, an optional conductive filler included in said integral layer, or an optional selenium or selenium-containing compound pre-loaded therein at 0 to 49% by weight; (b) preparing an electrolyte comprising a non-aqueous solvent and a selenium source dissolved or dispersed in said solvent; (c) preparing an anode; and (d) bringing said integral layer of porous graphitic structure and said anode in ionic contact with said electrolyte and imposing an electric current between said anode and said integral layer of porous graphitic structure, serving as a cathode, with a sufficient current density for a sufficient period of time to electrochemically deposit nanoscaled selenium particles or coating directly on said graphene surfaces to form said pre-selenized active cathode layer, wherein said particles or coating have a thickness or diameter smaller than 20 nm.

Metadata:
- Claim Count in Document: 98.0
- Percentile: 91.0
- Lexical Diversity: 1.80645
- Patent Class: 429.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14545128', '14545279', '14756510', '14756509', '14545204']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.899935944640746
- 35 USC 102 Novelty (BERT): 0.5768715740863984
- Combined Prediction Score: 0.8676295075853112
- Mean Citation Score: 479.2262
- Max Citation Score: 502.86844
- Similarity Product: 403.4040996060944

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