Fibrillated matrix active layer for an electrode

Details Fibrillated matrix active layer for an electrode Fibrillated matrix active layer for an electrode

1980-10-31

1982-10-19

Edmundson, F.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

204294, 429 42, C25B 1106, C25B 1102

Patent

active

043549586

ABSTRACT:
The present disclosure is directed to an improved fibrillated matrix-type active layer for an electrode of improved strength and durability and capable of operation at high current density with enhanced resistance to mechanical failure, and to a process for producing such improved active layers. The process is characterized by alternately or simultaneously producing two components; combining the components; shear blending (fibrillating) the mixture; drying; chopping to a fine powder form, and rolling into a self-sustaining, coherent shear form. Alternatively, the active layer can be formed by wet deposition of the powder on a filter paper or like medium.
The term "matrix" as used herein means that the active carbon particles are present within an unsintered network of carbon black/PTFE (fibrillated) material.

REFERENCES:
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patent: 3838092 (1974-09-01), Vogt et al.
patent: 3935029 (1976-01-01), Baker et al.
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patent: 4150076 (1979-04-01), Baris et al.
patent: 4170540 (1979-10-01), Lazarz et al.
Iliev, I., Journal of Power Sources, "On the Effect on Various Active Carbon Catalysts on the Behavior of Carbon Gas Diffusion Air Electrodes: 1. Alkaline Solutions," vol. 1, pp. 35-46, 1976/1977.
Landi, H. P., et al., "Advances in Chemistry Series," American Chemical Society Publications, pp. 13-23, 1969.

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