A three-dimensional metal network could loosen a battery-electrode trade-off

Thicker electrodes can store more energy relative to supporting material, but transporting ions through them becomes harder. Thin electrodes ease transport while consuming more space and material on components that do not store energy.

The researchers describe a metal fleece that distributes conductive surfaces through the electrode. Their experiments and calculations identify rapid lithium-ion movement along an interfacial layer, providing a mechanism for thicker electrodes with useful charging performance.

The reported improvements apply to the tested electrode designs, not automatically to a complete commercial vehicle battery. Manufacturing, durability, and full-cell performance still matter. The interesting shift is architectural: improving the internal delivery network can change how much active material a battery can use effectively.