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Electrode unit and secondary battery using the same

  • US 20040180259A1
  • Filed: 12/17/2003
  • Published: 09/16/2004
  • Est. Priority Date: 03/12/2003
  • Status: Active Grant
First Claim
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1. An electrode unit comprising:

  • a first electrode plate having a first electrode uncoated portion on at least one side of a first electrode collector coated with at least a first electrode active material;

    a second electrode plate having a second electrode uncoated portion on at least one side of a second electrode collector coated with at least a second electrode active material; and

    a separator interposed between the first electrode plate and the second electrode plate;

    wherein a portion of the separator provided between the first electrode uncoated portion and the second electrode uncoated portion has at least two folds.

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