Electrocatalytic gas diffusion electrode employing thin carbon cloth layer
First Claim
1. A method of preparing an electrocatalytic gas diffusion electrode with an open pore carbon cloth, comprising the steps of depositing a first uniform mixture of noble-metal-catalyzed carbon and a hydrophobic binder on one side of said cloth and adhering said first mixture within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth, and similarly depositing a second uniform mixture of non-catalytic carbon and a hydrophobic binder to the remaining open pore portion on the other side of said cloth and adhering said second mixture within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth.
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Abstract
An improved electrocatalytic gas diffusion electrode comprising an open pore carbon cloth carrying on one side a first uniform mixture of noble-metal-catalyzed carbon and a hydrophobic binder adhered within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth, and a second uniform mixture of non-catalytic carbon and a hydrophobic binder adhered to the remaining open pore portion on the other side of said cloth; and method of preparation.
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Citations
12 Claims
- 1. A method of preparing an electrocatalytic gas diffusion electrode with an open pore carbon cloth, comprising the steps of depositing a first uniform mixture of noble-metal-catalyzed carbon and a hydrophobic binder on one side of said cloth and adhering said first mixture within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth, and similarly depositing a second uniform mixture of non-catalytic carbon and a hydrophobic binder to the remaining open pore portion on the other side of said cloth and adhering said second mixture within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth.
- 6. An electrocatalytic gas diffusion electrode comprising an open pore carbon cloth carrying on one side a first uniform mixture of noble-metal-catalyzed carbon and a hydrophobic binder adhered within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth, and carrying on the other side of said cloth a second uniform mixture of non-catalytic carbon and a hydrophobic binder adhered within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth.
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11. A method of preparing an electrocatalytic gas diffusion electrode with an open pore carbon cloth, comprising the steps of rigidizing said cloth by forming a carbonizing coating on the yarns thereof, depositing a first uniform mixture of noblemetal-catalyzed carbon and a hydrophobic binder on one side of the rigidized carbonized cloth and adhering said first mixture within the cloth pores and to the carbonized yarns of the cloth to a depth less than the thickness of the cloth, and similarly depositing a second uniform mixture of non-catalytic carbon and a hydrophobic binder to the remaining open pore portion on the other side of said rigidized carbonized cloth and adhering said second mixture within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth.
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12. An electrocatalytic gas diffusion electrode comprising an open pore carbon cloth the yarns of which are coated with a rigidizing carbonized coating and carrying on one side a first uniform mixture of noble-metal-catalyzed carbon and a hydrophobic binder adhered within the cloth pores and to the rigidized carbonized yarns of the cloth to a depth less than the thickness of the cloth, and carrying on the other side of said cloth a second uniform mixture of non-catalytic carbon and a hydrophobic binder adhered within the cloth pores and to the yarns of the cloth to a depth less than the thickness of the cloth.
Specification