CORNEX, headquartered in Xiaogan, China, recently introduced its next-generation 588Ah large-capacity energy storage battery cell at a dedicated event. Executive Vice President Bu Xiangnan presented the cell’s core specifications in the presence of company leadership, industry partners and media representatives.
The 588Ah cell delivers a mass energy density of 190 Wh/kg and a volumetric energy density of 419 Wh/L, with a reported energy efficiency of 96.5%. Designed for grid-scale applications, the cell aims to provide high performance and reliability for utility and commercial energy storage.
Alongside the cell, CORNEX unveiled its 588-CTP2.0 energy storage pack. By optimizing cell-to-pack integration, this solution reduces material types and quantities by approximately 20%. At the pack level, it achieves a gravimetric energy density of 170 Wh/kg and a volumetric energy density of 285 Wh/L. To enhance safety, the pack incorporates a 1000 °C heat-resistant isolation layer that prevents thermal runaway propagation from individual cells to the overall system. A proprietary “absorption and protection” manufacturing process further boosts production efficiency by 35%, supporting scalable, large-volume delivery.
The company also launched the “Transformers” system platform, a highly modular solution built on standard container formats. A 10-foot unit offers 3.13 MWh of storage, while a 20-foot unit provides 6.26 MWh. These containers can be combined to match specific power, capacity and site requirements, making the platform suitable for power generation, grid stabilization and large commercial and industrial installations.
CORNEX reports that deploying the Transformers platform in a 100 MW project can reduce land use by 20%, cut the number of required storage systems by 27% and lower operational costs by more than 20%. This integrated ecosystem—from cell through pack to system—reflects the company’s strategic focus on delivering comprehensive, cost-effective solutions for the global energy transition. With this launch, CORNEX aims to support a cleaner, more stable energy future through advanced technology and robust manufacturing capabilities.
Source: Batteries News
