Controllable laser-processing–mediated tuning of micro-protrusion arrays on current collectors for high-performance batteries

Abstract

A novel micro-protrusion array structure with intersecting flow channels has been designed and done so controllably by carrying out femtosecond laser processing. The micro-protrusion arrays facilitate increasing the loading density of electrode materials, improving the electrolyte wettability, and enhancing lithium-ion diffusion kinetics during battery cycling.