NEWS COMMENTARY

Zenlabs validates 1,000 cycles for 12 Ah cells with silicon anodes

Published:
February 22, 2021
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Idaho National Laboratory recently validated Zenlab's 12 Ah pouch cells with 315 Wh/kg to have a cycle life of 1,000 cycles at a C/3 charge rate and 896 cycles at 4C. Zenlabs uses 50% to 80% silicon loading in its silicon-graphite composite anode, much higher than commercially available cells, which can use up to 5%. In comparison to Amprius' 350 Wh/kg for 12% silicon loading and LeydenJar's 420 Wh/kg pure silicon anodes, Zenlabs achieves a lower specific energy; however, it matches Amprius' cycle life of 1,000 cycles and outstrips LeydenJar's 200 cycles. The published metrics only offer a slight improvement over our last profile; Zenlabs offers only a slight improvement over graphite anodes at a likely much higher cost.

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