×

Expandable casing for electro-chemical cells

  • US 4,278,744 A
  • Filed: 01/27/1978
  • Issued: 07/14/1981
  • Est. Priority Date: 12/19/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. An electrochemical cell containing a lithium anode, an electrolyte salt, an organic electrolyte solvent, and a cathode, and said cell having an hermetically sealed, flexible casing with terminals extending through sealed openings in the casing;

  • wherein said casing is formed from a laminated material comprising a first inner layer which is permeable to vapors of said electrolyte solvent but free of pinholes, thereby rendering it impermeable to said electrolyte salt, and said inner layer being substantially completely surrounded by an outer, air impermeable metal barrier layer which prevents the vapors of said electrolyte solvent from escaping.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×