Apparatus and method of manufacture of electrochemical cell components
View Patent ↗A component for an electrochemical cell comprises a thermally and electrically conductive core, wherein the conductive core comprises apertures, and wherein the conductive core further comprises an active area substantially covered by an electrically and thermally conductive polymeric composite. The conductive polymeric composite is adhered to the core by an adhesion promoter comprising electrically conductive particles to reduce the volume resistivity of the component, and an optional adhesive composition. Components may be manufactured having a volume resistivity of about 0.500 ohm-cm or less and a thermal conductivity of at least about 5 watts/meter ° K. In addition, the component is economical to produce due to inexpensive starting materials as well as the use of conventional processing equipment.
1. In an electrochemical cell, an electrically conductive component comprising
an electrically and thermally conductive core having a first aperture therethrough, the core further comprising an active area; and
an electrically and thermally conductive polymeric composite substantially covering the active area of the conductive core, and substantially covering the surfaces forming the first aperture to provide a second aperture, and adhered to the active area of the core and the aperture surfaces by a first adhesion promoter layer, wherein the adhesion promoter layer comprises electrically conductive particles.
2. The electrochemical cell component of claim 1 , wherein the component additionally comprises a channel for conducting a fluid.
3. The electrochemical cell component of claim 2 , wherein the composite is molded to form the channel.
4. The electrochemical cell component of claim 3 , wherein the channel is non-conformal to the underlying conductive core.
5. The electrochemical cell component of claim 1 , wherein the core additionally comprises a heat transfer area extending beyond the active area.
6. The electrochemical cell component of claim 5 , wherein the heat transfer area is in the form of a cooling fin.
7. The electrochemical cell component of claim 1 , wherein the conductive particles comprising carbon, conductive metals, conductive metal alloys, conductive intermetallics, or a combination comprising one or more of the foregoing conductive particles.
8. The electrochemical cell component of claim 7 , wherein the conductive particles comprise silver, nickel, or silver and nickel.
9. The electrochemical cell component of claim 1 , wherein the adhesion promoter is a conductive polymer.
10. The electrochemical cell component of claim 1 , wherein the electrically and thermally conductive polymeric composite is adhered to all surfaces that form the aperture.
11. In an electrochemical cell, an electrically conductive component comprising
an electrically and thermally conductive core;
an electrically and thermally conductive polymer composite substantially covering the core; and
a first adhesion promoter layer comprising a conductive polymer and electrically conductive particles disposed between and in intimate contact with the core and the conductive polymer composite, wherein the electrochemical cell component has a volume resistivity of about 0.050 ohm-cm or less.
12. The electrochemical cell component of claim 11 , wherein the conductive polymer comprises polyacetylene, polythiophene, polypyrrole, polyaniline, poly-p-phenylenevinylene, their derivatives, or a combination comprising at least one of the foregoing polymers.
13. The electrochemical cell component of claim 11 , wherein the conductive particles comprise carbon, conductive metals, conductive metal alloys, conductive intermetallics, or a combination comprising one or more of the foregoing conductive particles.
14. The electrochemical cell component of claim 13 , wherein the conductive particles comprise silver, nickel, or silver and nickel.
15. The electrochemical cell of claim 11 , wherein the conductive polymer composite comprises a polybutadiene- or polyisoprene-containing polymer.