In the consumer electronics sector, composite current collectors used in batteries enhance energy density, reduce weight, meet demands for slim and lightweight designs, improve safety, and extend battery lifespan.

Composite current collectors are applied in new energy vehicle power batteries. Their “metal-polymer-metal” sandwich structure enhances energy density by 5%-10%, reduces weight by 60%, improves safety (such as needle penetration resistance), supports fast charging, and extends cycle life. This technology drives breakthroughs in driving range and safety assurance.

Composite collectors applied to photovoltaic energy storage batteries enhance energy density and cycle life, improve safety, and support the efficient and stable operation of energy storage systems.

Composite current collectors have become a key material for spacecraft batteries due to their lightweight and high-safety characteristics. By replacing traditional metal current collectors, they can significantly reduce the weight of space power systems and enhance payload capacity.

The composite current collector features a sandwich structure design comprising a polymer substrate (e.g., PET/PP) with a nano-metal coating (Cu/Al). Its thickness can be precisely controlled between 6–8μm (significantly lower than the 12μm of traditional copper foil), reducing surface density by over 50%. In semiconductor packaging and high-end electronics, this material can replace traditional copper foil, substantially reducing circuit substrate weight. It is particularly suitable for applications demanding extreme lightweighting and space utilization, such as wearable medical devices (e.g., EEG monitoring headbands) and foldable smartphones.