At the recently held 13th Energy Storage International Summit & Exhibition, CATL introduced its 587Ah high-capacity battery cell integrated into its next-generation energy storage system, Tianheng.
This new cell achieves an impressive energy density of 430Wh/L, positioning it at the forefront of high-efficiency storage solutions. Despite its large capacity, CATL claims that the 587Ah cell actually delivers better safety performance compared to smaller cells.
One of the key innovations behind this advancement is the adoption of biomimetic SEI (Solid Electrolyte Interphase) membrane technology, which significantly reduces the consumption of active lithium. As a result, the total energy throughput over the battery’s lifetime has been increased by 48% compared to the previous generation.
Furthermore, this innovation brings significant economic benefits, with internal rate of return (IRR) expected to rise by 2% to 3% for energy storage projects utilizing this new cell technology.
CATL’s presentation reaffirms its leading role in pushing forward the technological and commercial frontiers of large-scale energy storage.
