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Method of measuring distribution of binder in electrode

  • US 10,663,528 B2
  • Filed: 10/07/2016
  • Issued: 05/26/2020
  • Est. Priority Date: 10/08/2015
  • Status: Active Grant
First Claim
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1. A method of measuring a distribution of a binder in an electrode, comprising:

  • measuring a thickness of an electrode in which an active material layer, which comprises an active material, a conductive material, and a binder, is formed on a current collector (Step

         1);

    fixing the active material layer of the electrode to a substrate so that the active material layer comes into contact with the substrate (Step

         2);

    attaching a removal tape to the current collector of the electrode, and then measuring an adhesive strength of the removal tape while removing the removal tape and the current collector and measuring a thickness of the electrode after the removal (Step

         3);

    attaching a removal tape to the active material layer from which the current collector is removed, and then measuring an adhesive strength of the removal tape while removing portions of the removal tape and the active material layer and measuring the thickness of the electrode after the removal, wherein this procedure is repeated until a measurement limit is reached (Step

         4); and

    determining a distribution of the binder according to the thickness of the electrode from measured values obtained in Steps 3 and 4 (Step

         5).

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