Fabrication of repeat parts for small area short stack is underway: 100 electrode substrates and 150 ERP substrates were graphitized, and 30 electrode substrates were run through each manufacturing step. Teflon content and compaction pressure of shop-made electrodes for the small area short stack was optimized based on single cell tests. A single cell with GSB-18P catalyst and 1 mg/cm(sup 2) loading is performing very well; performance is 0.66 V per cell after 1200 h at 300 ASF. 3 integral separator plate configurations have been selected for verification in the upcoming short stack. Bubble pressures over 7 psid have been demonstrated in filler bands applied with a production curtain and coating process. 5 full-size (small area) coolers were molded, and encapsulation development for molded and commercial graphite coolers continued.
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