Method for joining metal to graphite

Details Method for joining metal to graphite Method for joining metal to graphite

B - Operations, Transporting

23

K

26/110

B23K 11/16 (2006.01) B23K 11/20 (2006.01) H01M 2/26 (2006.01)

Patent

CA 1185774

ABSTRACT A method of joining two metal members to a graphite member to form a structure having a low transition resistance is described. The method includes the steps of providing a plurality of openings in the graphite mem- ber, interposing the graphite member between the two metal members and positioning the metal members to cover the openings in the graphite member, and resistance spot welding the metal members to the graphite member at the openings in the graphite member. This method is advan- tageous in forming a bus-bar connection between a pair of opposite polarity graphite electrodes in an electro- chemical cell stack, such as a zinc-chloride battery. In this particular application, it is preferred that titanium be used for the metal members.

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