Electrochemical double layer capacitor having carbon powder electrodes
First Claim
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1. A method of making an electrode structure for use in a double layer capacitor, comprising the steps of:
- providing a current collector plate having a length and a width wherein the length is greater than the width;
applying a first slurry including conducting carbon powder and a binder to a current collector plate while moving the current collector plate lengthwise;
curing the applied first slurry to form a primary coating;
applying a second slurry that includes activated carbon powder, a solvent and a binder to the primary coating while moving the current collector plate lengthwise; and
curing the applied second slurry to form a secondary coating, thereby forming a first electrode removing portions of the first slurry at edges of the current collector plate while moving the current collector plate lengthwise; and
removing portions of the second slurry at the edges of the current collector plate to form contact edges while moving the current collector plate lengthwise.
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Abstract
A method of making an electrode structure, and a double layer capacitor including the electrode structure, the method includes the steps of: applying a first slurry including conducting carbon powder and a binder to a current collector plate; curing the applied first slurry to form a primary coating; applying a second slurry that includes activated carbon powder, a solvent and a binder to the primary coating; and curing the applied second slurry to form a secondary coating, thereby forming a first electrode. In variations, additional primary and secondary coatings may be formed on both sides of the collector plate.
185 Citations
17 Claims
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1. A method of making an electrode structure for use in a double layer capacitor, comprising the steps of:
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providing a current collector plate having a length and a width wherein the length is greater than the width;
applying a first slurry including conducting carbon powder and a binder to a current collector plate while moving the current collector plate lengthwise;
curing the applied first slurry to form a primary coating;
applying a second slurry that includes activated carbon powder, a solvent and a binder to the primary coating while moving the current collector plate lengthwise; and
curing the applied second slurry to form a secondary coating, thereby forming a first electrode removing portions of the first slurry at edges of the current collector plate while moving the current collector plate lengthwise; and
removing portions of the second slurry at the edges of the current collector plate to form contact edges while moving the current collector plate lengthwise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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