Problem

Silicon anode materials – the future of battery technology

Traditional lithium-ion batteries (LIBs) use graphite anodes, which are stable but have low energy density. Silicon anodes, with a specific capacity nearly 10 times higher than graphite, offer a breakthrough for high-performance applications like electric vehicles and grid storage. They enable higher energy density, are lightweight, abundant, and compatible with current technologies.

However, silicon expands up to 300% during charge/discharge cycles, leading to structural degradation and reduced battery life. This volume change causes cracking and delamination, making electrode stability the main barrier to commercialization. To address this, carbon nanotubes (CNTs) are added to improve stability, but they suffer from poor dispersion, low concentration, and agglomeration in slurries.

Solution

Silicon anode additive from Danish Graphene – Drop-in solution

Danish Graphene’s drop-in graphene additive is designed to enhance silicon anode performance and integrate easily into existing battery manufacturing. Added directly during electrode slurry preparation, the paste disperses uniformly with high stability and concentration of active material (>1 wt%), with no additional stabilizers. Unlike CNTs, it does not agglomerate during electrode casting.

This additive improves initial coulombic efficiency by up to 20% and extends cycle life by up to 35%. It has been rigorously tested with several silicon anode manufacturers and consistently outperforms conventional CNT products. In addition to superior performance, it offers easier handling and integration, making it an efficient, scalable solution for next-generation lithium-ion batteries.

Customer benefit

Boost Battery Performance with Longer Life and Greater Efficiency

Our solution improves battery performance by increasing the initial coulombic efficiency by up to 20% and extending the cycle life by up to 35%, resulting in longer-lasting and more efficient batteries. It is easily incorporated into existing manufacturing processes without the need for special handling or reformulation, simplifying production and minimizing both downtime and adaptation costs.

Proven compatibility and stability ensure reliable and consistent results, supporting high reproducibility in large-scale production. Additionally, it offers a cost-effective alternative to carbon nanotube (CNT) additives, outperforming them while being easier to process and more efficient in use.