Pushing the Limits of Commercial Cell Energy Density with Graphene-Silicon Composite Material

NanoGraf Corporation recently validated that its novel silicon-based materials technology can enable a quantum leap in 18650 cell performance by achieving an energy density of over 800 Wh/L, while also retaining best-in-class cycle life, low-temperature operation, and rate performance. NanoGraf’s composite silicon-graphene G6 anode material is differentiated both through performance (>90% FCE, 1300 mAh/g) and drop-in readiness, which has been demonstrated with dozens of cell manufacturing partners worldwide. In addition, G6 represents a breakthrough in manufacturing and cost since it can be produced in two steps and replaces expensive, complex vapor deposition-based systems with a low-cost, aqueous coating process.
In this talk, we will discuss NanoGraf’s proprietary material architecture consisting of silicon-based alloys and a flexible 3D graphene network that helps stabilize the active material during charge and discharge. This technology solves long-standing technical hurdles surrounding silicon anodes and enables >30% energy density improvements in commercial cylindrical cells. The material is produced at multi-ton scales now, with additional scale-up in the United States to be completed in 2022. Finally, we will discuss how NanoGraf-enabled 18650 cells are being utilized in applications for the US military, where both superior performance and weight reduction are critical to enabling high-functioning members of the armed forces