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ELECTRIC STORAGE DEVICE AND ELECTRIC STORAGE APPARATUS

  • US 20140295245A1
  • Filed: 03/27/2014
  • Published: 10/02/2014
  • Est. Priority Date: 03/29/2013
  • Status: Active Grant
First Claim
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1. An electric storage device comprising:

  • a container;

    an electrode assembly contained in the container, the electrode assembly comprisinga positive electrode comprising a positive electrode substrate and a positive electrode active material layer formed on the positive electrode substrate, the positive electrode active material layer containing a positive electrode active material,a negative electrode comprising a negative electrode substrate and a negative electrode active material layer formed on the negative electrode substrate, the negative electrode active material layer containing a negative electrode active material, anda separator interposed between the positive electrode and the negative electrode; and

    an electrolyte contained in the container,wherein the separator is configured such that a stress that is caused at a specific compressed depth in the separator, which corresponds to 5% of the thickness of the negative electrode active material layer, is 0.5 MPa or more and 14 MPa or less.

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