Composite substrate for bipolar electrodes

Details Composite substrate for bipolar electrodes Composite substrate for bipolar electrodes

1991-02-01

1992-12-22

Lesmes, George F.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428244, 428273, 428290, 162138, 162145, 162169, 1621819, 429198, 429199, 429210, B32B 516, B32B 2720, D21H 1100

Patent

active

051733625

ABSTRACT:
Substrates for electrode systems, particularly those to be used for bipolar electrodes in zinc-bromine batteries, are disclosed. The substrates preferably include carbon-black as a conductive filler in a polymeric matrix, with reinforcing materials such as glass fibers. Warpage of the zinc-bromine electrodes which was experienced in the prior art and which was believed to be caused by physical expansion of the electrodes due to bromine absorption by the carbon-black, is substantially eliminated when new substrate fabrication techniques are employed. In the pesent invention, substrates are prepared using a lamination process known as glass mat reinforced thermoplastics technology or, in an alternate embodiment, the substrate is made using a slurry process.

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patent: 4482614 (1984-11-01), Zito, Jr.
patent: 4521359 (1985-06-01), Tsien
patent: 4877679 (1989-10-01), Leatherman et al.

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