Ultracapacitor electrode with controlled sulfur content
First Claim
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1. A method of making an active electrode material, the method comprising:
- providing activated carbon with a sulfur content in the range of about 0 and about 300 parts per million;
providing binder; and
, mixing the activated carbon and the binder to obtain a mixture of active electrode material.
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Abstract
Particles of active electrode material are made by blending mixing a mixture of activated carbon and binder. In selected implementations, sulfur level in the activated carbon is relatively low and the binder is inert. For example, sulfur content of the activated carbon and the resultant mixture is below 300 ppm and in other implementations, below 50 ppm. The electrode material may be attached to a current collector to obtain an electrode for use in various electrical devices, including a double layer capacitor. The electrode decreases current leakage of the capacitor.
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14 Claims
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1. A method of making an active electrode material, the method comprising:
- providing activated carbon with a sulfur content in the range of about 0 and about 300 parts per million;
providing binder; and
, mixing the activated carbon and the binder to obtain a mixture of active electrode material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
- providing activated carbon with a sulfur content in the range of about 0 and about 300 parts per million;
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10. A method of making an active electrode material, the method comprising:
- providing activated carbon with a sulfur content in the range of about 0 and about 300 parts per million;
providing low contamination level conductive carbon particles;
providing binder; and
, mixing the activated carbon, the conductive carbon, and the binder to obtain a mixture such that the mixture has a sulfur content in the range of about 0 and about 300 parts per million. - View Dependent Claims (11, 12, 13, 14)
- providing activated carbon with a sulfur content in the range of about 0 and about 300 parts per million;
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