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US 4,129,633 AGranted
Process and apparatus for manufacture of an electrode
AssigneeGould Inc.
InventorRoyce E. Biddick
Life of this patent
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Abstract
An improved process for making a gas diffusion electrode which comprises heating of the mixed electrode material prior to forming the electrode. Because of the stickiness or self adhesion characteristics of the electrode mixture, the invention includes special transport apparatus having a fluidized bed that uniformly disperses the sticky electrode material onto a conveyor belt for forming the electrode without subsequent heating.
Claims11
The process for manufacture of a continuous electrode comprising:
- preparing a bulk electrode material including a hydrophobic binder comprised of sticky electrode material particles;
- fluidizing the sticky electrode material particles in a fluid stream by observing sticky electrode particle behavior in a fluid stream and controlling the fluid stream such that particles are maintained in a uniform suspension allowing a uniform flow of sticky electrode particles over a weir onto a moving member to thereby produce a continuous strip of electrode particles;
- and
- then compressing the electrode particles to produce a continuous electrode.
1 more element
The process for manufacture of a continuous electrode comprising:
- preparing a bulk electrode mixture including a hydrophobic binder having a predetermined melting temperature, said bulk electrode material characterized by self-adhesion;
- first heating the bulk electrode mixture to a temperature below the melting temperature of the hydrophobic binder to drive off unwanted suspension materials in the bulk electrode mixture to thereby produce large lumps of electrode mixture;
- breaking up the lumps of electrode mixture to produce self-adhering electrode particles;
- fluidizing the self-adhering electrode particles in a fluid stream by observing sticky electrode particle behavior in a fluid stream and controlling the fluid stream such that particles are maintained in a uniform suspension allowing a uniform flow of sticky electrode particles over a weir
- onto a moving member to thereby produce a continuous strip of self-adhering electrode particles;
- and
- then compressing the electrode particles to produce a continuous self-adhering electrode.
4 more elements
Dependencies are inferred from the claim text.