Composite substrate for bipolar electrodes
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 present 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. 4 figs.
- DOE Contract Number:
- AC04-88AL54304
- Assignee:
- Globe-Union, Inc., Milwaukee, WI (United States)
- Patent Number(s):
- A; US 5173362
- Application Number:
- PPN: US 7-654206
- OSTI ID:
- 7205862
- Country of Publication:
- United States
- Language:
- English
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