PATENT CLAIM ANALYSIS

Application Number: 16024827
Application Type: Utility
Filing Date: 2018-06
Publication Date: 2019-01
Patent Classification: ["204", "252000"]

Abstract:
An electrochemical device converts carbon dioxide to a formic acid reaction product. The device includes an anode and a cathode, each comprising a quantity of catalyst. The anode and cathode each have reactant introduced thereto. A cation exchange polymer electrolyte membrane and an anion exchange polymer electrolyte membrane, are interposed between the anode and the cathode, forming a central flow compartment where a carbon dioxide reduction product, such as formic acid, can be recovered. At least a portion of the cathode catalyst is directly exposed to gaseous carbon dioxide during electrolysis. The average current density at the membrane is at least 20 mA/cm 2 , measured as the area of the cathode gas diffusion layer that is covered by catalyst, and formate ion selectivity is at least 50% at a cell potential difference of 3.0 V.

Claim (Index 9):
The electrochemical device of  claim 1 , wherein at least a portion of said anion exchange membrane is a Helper Membrane identifiable by applying a test comprising:\n (1) preparing a cathode comprising 6 mg/cm 2  of silver nanoparticles on a carbon fiber paper gas diffusion layer; (2) preparing an anode comprising 3 mg/cm 2  of RuO 2  on a carbon fiber paper gas diffusion paper; (3) preparing a polymer electrolyte membrane test material; (4) interposing the membrane test material between said anode and said cathode, the side of said cathode having said silver nanoparticles disposed thereon facing one side of said membrane and the side of said anode having IrO 2  disposed thereon facing the other side of said membrane, thereby forming a membrane electrode assembly; (5) mounting said membrane electrode assembly in a fuel cell hardware assembly having cathode reactant flow channels and anode reactant flow channels; (6) directing a stream of CO 2  humidified at 50\u00b0 C. into said cathode reactant flow channels while the fuel cell hardware assembly is at room temperature and atmospheric pressure, with said anode reactant flow channels left open to the atmosphere at room temperature and pressure; (7) applying a potential difference of 3.0 V across the cell via an electrical connection between said anode and said cathode; (8) measuring the current across the cell and the concentration of CO and H 2  at the exit of said cathode flow channel; (9) calculating the CO selectivity as follows: Selectivity = ( CO \ue89e \ue89e production \ue89e \ue89e rate ) ( CO \ue89e \ue89e production \ue89e \ue89e rate + H 2 \ue89e \ue89e production \ue89e \ue89e rate ) ; and where the CO and H 2  production rates are measured in moles per minute leaving the device;\n (10) identifying said membrane as a Helper Membrane if the average current density at said membrane is at least 20 mA/cm 2 , where the cm 2  is measured as the area of said cathode gas diffusion layer that is covered by catalyst particles, and CO selectivity is at least 50% at a cell potential difference of 3.0 V.

Metadata:
- Claim Count in Document: 114.0
- Percentile: 94.0
- Lexical Diversity: 1.75294
- Patent Class: 204.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15260213', '14704934', '14704935', '15090477', '15400775']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7864505598687347
- 35 USC 102 Novelty (BERT): 0.6448623419187386
- Combined Prediction Score: 0.7722917380737351
- Mean Citation Score: 397.080708
- Max Citation Score: 618.9507
- Similarity Product: 606.9956645378352

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