The effect of additives on microstructure and properties of electrodeposited porous copper foils

As an important anode collector material for lithium-ion batteries, porous copper foil has also received huge attention and scientific inquiry in recent years. However, high-power materials still need to be improved to meet higher market requirements. In this paper, a three-dimensional porous structure was constructed by adding a variety of additives to the electrolyte by way of the template-free hydrogen bubble dynamic template approach. Accordingly, a ternary additive system of chloride ions, hydroxyethyl cellulose, and polyethylene glycol composite was designed. Meanwhile, the porous copper foils at this concentration possessed a low electrical resistance value of 8.21 mΩ, and the half-cells assembled with them possess excellent cycling and conductive properties.