{
  "patent_number": "US 20210123152",
  "country": "US",
  "title": "How to Make Big Electrodes for Splitting Water",
  "original_title": "Method for Preparing Large-area Catalyst Electrode",
  "summary": "This patent describes a simple, energy-saving way to create large, efficient catalyst electrodes using a mix of iron, cobalt, and nickel compounds through an electrical plating process.",
  "what_it_does": "The patent outlines a method for creating a \"large-area catalyst electrode\" that helps split water into hydrogen and oxygen. First, you mix specific metal compounds like iron sulfate, cobalt chloride, and nickel nitrate in a liquid solvent such as water or ethanol (Claim 1, 2, 3, 4, 5). Then, you place a negative electrode (cathode) and a positive electrode (anode) into this metal solution (Claim 1). Using a \"two-electrode method,\" electricity is passed through the solution at a constant voltage (0.1V to 1V) or constant current (0.1A to 1A) for 1 to 20 minutes (Claim 9, 10). This process, called \"cathodic electrochemical deposition,\" causes the metal compounds to form a coating on the cathode, which then becomes the finished catalyst electrode (Claim 1). For example, a graphite cathode could be coated with a nickel-cobalt-iron catalyst from a water-based solution.",
  "what_it_does_not_cover": [
    "Does not cover catalyst electrodes made without using all three specified metals: iron, cobalt, and nickel compounds.",
    "Does not cover deposition methods other than \"cathodic electrochemical deposition\" (e.g., spraying, vacuum deposition).",
    "Does not cover systems that use more than two electrodes during the deposition process.",
    "Does not cover deposition processes that do not maintain a constant voltage or constant current.",
    "Does not cover electrodes where the anode's area is smaller than the cathode's area."
  ],
  "filed": "2020-10-22",
  "granted": null,
  "expires": "2040-10-22",
  "status": "active",
  "holder": "National Chung Shan Institute of Science and Technology NCSIST",
  "holder_url": "https://patentbrief.org/company/national-chung-shan-institute-of-science-and-technology-ncsist",
  "inventors": [
    {
      "name": "Kuan-Ting Lai",
      "url": "https://patentbrief.org/inventor/kuan-ting-lai"
    },
    {
      "name": "Chung-Yen Lu",
      "url": "https://patentbrief.org/inventor/chung-yen-lu"
    },
    {
      "name": "Chia-Kan Hao",
      "url": "https://patentbrief.org/inventor/chia-kan-hao"
    }
  ],
  "times_cited": 21,
  "tags": [
    "energy",
    "materials",
    "chemical_manufacturing"
  ],
  "abstract": "A method for preparing a large-area catalyst electrode includes the following steps: (A) providing an iron compound, a cobalt compound and a nickel compound, and dissolving these metal compounds in a solvent to form a mixed metal compound solution, and (B) providing a cathode and an anode, and performing a cathodic electrochemical deposition to the cathode, the anode and the mixed metal compound solution in a condition of constant voltage or constant current through a two-electrode method, followed by obtaining a catalyst electrode from the cathode. In the method for preparing the large-area catalyst electrode of the present invention, the large-area catalyst electrode having good dual-function water electrolysis catalytic property can be prepared by the steps of preparing the electrolyte, the electrochemical deposition, and the like. The process is simple and energy-saving.",
  "url": "https://patentbrief.org/patent/us/20210123152/method-for-preparing-large-area-catalyst-electrode",
  "markdown_url": "https://patentbrief.org/patent/us/20210123152/method-for-preparing-large-area-catalyst-electrode/md",
  "google_patents_url": "https://patents.google.com/patent/US20210123152",
  "relatedPatents": []
}