THREE DIMENSIONAL POSITIVE ELECTRODE FOR LiCFx TECHNOLOGY PRIMARY ELECTROCHEMICAL GENERATOR
AssigneeSaft
InventorsPatrick BERNARD, Bernard SIMON, Michel HILAIRE
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Abstract
An electrode comprising a current collector containing aluminum, having a three dimensional porous structure in which: certain pores are open; the average diameter of the open pores being greater than or equal to 50 μm and less than or equal to 250 μm; two contiguous open pores communicate by at least one opening the diameter of which being greater than or equal to 20 μm and less than or equal to 80 μm; said structure containing a mixture comprising: a) at least one active material of the fluorinated carbon CFx type with x ranging between 0.5 and 1.2; b) at least one electron conducting additive; c) at least one binder.
Claims17
An electrode comprising a current collector containing aluminum, having a three dimensional porous structure in which:
- certain pores of said porous structure are open;
- the average diameter of the open pores being greater than or equal to 50 μm and less than or equal to 250 μm;
- two contiguous open pores communicate by at least one opening the diameter of which being greater than or equal to 20 μm and less than or equal to 80 μm;
- said structure containing a mixture comprising:
- a) at least one active material of the fluorinated carbon CFx type with x ranging between 0.5 and 1.2;
- b) at least one electron conducting additive;
- c) at least one binder.
A method for preparing an electrode comprising the steps of:
- a) providing a current collector containing aluminum having a three dimensional porous structure in which:
- certain pores of said structure are open;
- the average diameter of the open pores being greater than or equal to 50 μm and less than or equal to 250 μm;
- two contiguous open pores communicate by an opening the average diameter of which is greater than or equal to 20 μm and less than or equal to 80 μm;
- b) preparing a paste comprising an active material of the fluorinated carbon CFx type with x ranging from 0.5 to 1.2;
- an electron conducting additive and a binder;
- c) coating the current collector with the paste;
- d) drying the electrode;
- e) rolling the electrode.
Dependencies are inferred from the claim text.