Lithium-ion battery firm Zenlabs Energy has had its large-format pouch cells for the electric aviation market validated by independent third-party test laboratory Energy Assurance.
The California, US firm is developing batteries for electric vehicle and aviation applications that allow extended flight times and power take-offs and landings.
The firm’s battery uses nickel-rich NCM811 as the positive electrode material and its silicon anode is able to use more than 90% of silicon monoxide in its formulations.
In tests, Energy Assurance confirmed Zenlabs’ 32Ah capacity pouch cells had a specific energy of ~327.5Wh/kg and a power rating of greater than 3,000W/kg using 12C rate (~394 A), 30 sec pulses at 30° Celsius.
Although cycle life testing at Energy Assurance is ongoing, Zenlabs says its internal test data has demonstrated greater than 700 cycles for this cell configuration when measured at 1C (one hour) charge/discharge rates.
Previously, Idaho National Laboratory (INL) validated more than 1,000 dynamic stress test (DST) cycles and rapid charging in Zenlabs’ 315Wh/Kg electric vehicle cells, which were developed in a program with the United States Advanced Battery Consortium (USABC).
The full report from Energy Assurance is available here for download.
