Methods of making coated battery components
First Claim
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1. A method of making a cathode for a primary lithium battery comprising:
- step A;
pulling an expanded metal grid including aluminum and having an initial tensile strength and an array of diamond-shaped openings, each opening having a long dimension and a short dimension, and each opening defined by four elongated boundary elements, each boundary element having a length and the pulling being along a direction other than along the length of any of the elements, the pulling providing a pulled expanded metal grid having an increase in the short dimension of the openings and an increase in the tensile strength to greater than 5 lb/in;
step B;
leveling the pulled expanded metal grid by passing the pulled expanded metal grid between rollers, andstep C;
coating the pulled expanded metal grid with a composition including a cathode active material to provide a coated and pulled expanded metal grid,wherein leveling is conducted before coating and in a separate step before step C.
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Abstract
A primary lithium battery can include a current collector that includes aluminum, a cap that includes aluminum, or both. The current collector can be coated with a cathode material The aluminum battery components can have high mechanical strength and low electrical resistance.
27 Citations
37 Claims
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1. A method of making a cathode for a primary lithium battery comprising:
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step A;
pulling an expanded metal grid including aluminum and having an initial tensile strength and an array of diamond-shaped openings, each opening having a long dimension and a short dimension, and each opening defined by four elongated boundary elements, each boundary element having a length and the pulling being along a direction other than along the length of any of the elements, the pulling providing a pulled expanded metal grid having an increase in the short dimension of the openings and an increase in the tensile strength to greater than 5 lb/in;step B;
leveling the pulled expanded metal grid by passing the pulled expanded metal grid between rollers, andstep C;
coating the pulled expanded metal grid with a composition including a cathode active material to provide a coated and pulled expanded metal grid,wherein leveling is conducted before coating and in a separate step before step C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification