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US 6,410,181 B1Granted
High temperature lithium oxyhalide electrochemical cell
AssigneeWilson Greatbatch Ltd.
InventorsDavid M. Spillman, Esther S. Takeuchi
Life of this patent
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Abstract
An alkali metal electrochemical cell, and particularly a lithium oxyhalide cell, is described. The oxyhalide cell also exhibits superior restart characteristics by the provision of a MANNIGLASS 1200 separator.
Claims27
An electrochemical cell, which comprises:
- a) an alkali metal anode;
- b) a cathode;
- c) a separator comprising E-glass material disposed between the anode and the cathode;
- d) a catholyte comprising an organic solvent or inorganic depolarizer solvent;
- e) a casing housing the anode and the cathode and serving as a first terminal for one of them;
- and
- f) a lead serving as a terminal for the other of the anode and the cathode, and the lead being of an alloy consisting essentially of, by weight %, about 50 to 52 nickel, up to about 0.05% carbon, up to about 0.6% manganese, up to about 0.3% silicon, balance iron.
4 more elements
The electrochemical cell of claim wherein 15 the salt concentration ranges from about 0.1 to 1.8 molar.
A method for providing an electrochemical cell, comprising the steps of:
- a) expanding a nickel substrate in both a length-wise direction and a side-wise direction to form a nickel current collector;
- b) annealing the nickel current collector in a reducing atmosphere at a temperature of at least 1,130° F. for at least two hours;
- c) providing an anode of an alkali metal contacted to the annealed nickel current collector;
- d) providing a cathode current collector;
- e) positioning a separator of E-glass material between the anode and the cathode current collector;
- and
- f) activating the anode and the cathode current collector with a catholyte comprising an organic solvent or inorganic depolarizer solvent.
4 more elements
A method for providing an electrochemical cell, comprising the steps of:
- a) expanding a nickel substrate in both a length-wise direction and a side-wise direction to form a nickel current collector;
- b) providing an anode of an alkali metal contacted to the nickel current collector;
- c) providing a cathode current collector in electrical association with the anode;
- d) activating the anode and the cathode current collector with a catholyte comprising an organic solvent or inorganic depolarizer solvent.
1 more element
A method for providing an electrochemical cell, comprising the steps of:
- a) providing a nickel current collector;
- b) annealing the nickel current collector in a reducing atmosphere at a temperature of at least 1,130° F. for at least two hours;
- c) providing an anode comprising lithium contacted to the annealed nickel current collector;
- d) providing a cathode current collector;
- e) positioning a separator of E-glass material between the anode and the cathode current collector;
- and
- f) activating the anode and the cathode current collector with a catholyte comprising an organic solvent or inorganic depolarizer solvent.
4 more elements
Dependencies are inferred from the claim text.