PATENT CLAIM ANALYSIS

Application Number: 15910304
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2018-09
Patent Classification: ["502", "300000"]

Abstract:
A catalyst containing a carbon support and a core-shell nanoparticle supported on the carbon support, wherein a core of the core-shell nanoparticle is cobalt metal not containing a heterogeneous element and the shell contains carbon. The catalyst for an oxygen reduction reaction of the present disclosure is a catalyst in which the cobalt core-carbon shell nanoparticle is supported on the carbon support through ligand stabilization and heat treatment. The catalyst can be synthesized to have high dispersibility. In particular, it can be used as an electrode catalyst of a cathode to improve the oxygen reduction activity and durability of a fuel cell operating under an alkaline atmosphere.

Claim (Index 1):
A method for preparing a catalyst, comprising:\n (a) preparing a dispersion by dispersing a carbon support in a solvent; (b) preparing a mixture solution by mixing the dispersion with a cobalt precursor and a polymer ligand; (c) preparing a catalyst precursor by heat-treating the mixture solution at a low temperature of 250-350\u00b0 C. under an inert gas atmosphere; and (d) preparing a catalyst comprising a carbon support and a core-shell nanoparticle supported on the carbon support, wherein a core of the core-shell nanoparticle is cobalt metal not comprising a heterogeneous element and the shell comprises carbon, by heat-treating the catalyst precursor at a high temperature of 550-800\u00b0 C. under an inert gas atmosphere.

Metadata:
- Claim Count in Document: 13.0
- Percentile: 90.0
- Lexical Diversity: 1.76562
- Patent Class: 502.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: True
- Related Applications: ['15910290', '14579841', '13124960', '14921567', '12797520']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7621106099885578
- 35 USC 102 Novelty (BERT): 0.4867021686989624
- Combined Prediction Score: 0.7345697658595983
- Mean Citation Score: 194.896766
- Max Citation Score: 207.69658
- Similarity Product: 153.23729919167758

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