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Electrolyte and battery using the same

  • US 9,997,803 B2
  • Filed: 07/15/2004
  • Issued: 06/12/2018
  • Est. Priority Date: 07/18/2003
  • Status: Active Grant
First Claim
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1. An electrolyte, applied on a cathode or an anode of a battery, said electrolyte comprising:

  • a first high molecular weight compound with a weight-average molecular weight of more than 550,000 and less than 1,000,000;

    a second high molecular weight compound with a weight-average molecular weight of 1,000 or more and equal to or less than approximately 150,000; and

    a third high molecular weight compound with a weight-average molecular weight of more than 300,000 but less than 550,000,wherein each of the first, second and third high molecular weight compounds is a block copolymer of vinylidene fluoride and hexafluoropropylene having a melting point of approximately 150°

    C.; and

    wherein the first high molecular weight compound has a weight percentage of the electrolyte of 30% or more, and further wherein there is a difference of approximately 200,000-300,000 weight-average molecular weight between the first and third high molecular weight compounds and of approximately 150,000-350,000 weight-average molecular weight between the second and third high molecular weight compounds.

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