Reducing lithium upper accumulation in nanostructured conductive scaffolds by improving the ionic conductivity of the electrolyte and increasing the lithium-ion diffusivity within the electrolyte

Hoseini, Seyed Ali

doi:10.22034/joeds.2025.534399.1095

Reducing lithium upper accumulation in nanostructured conductive scaffolds by improving the ionic conductivity of the electrolyte and increasing the lithium-ion diffusivity within the electrolyte

Document Type : Original Article

Author

Seyed Ali Hoseini

Department of Electrical Engineering,, Shahid Sattari Aeronautical University of Science and Technology,,Tehran, Iran

10.22034/joeds.2025.534399.1095

Abstract

It is of great importance to study the parameters affecting the lifespan and specific capacity of lithium-ion batteries. One of the key factors influencing the efficiency of these batteries is the uniform and dendrite-free deposition of lithium within the electrode structure. This study reveals, for the first time, a strong correlation between the ionic conductivity of the electrolyte and the cycling stability of metal scaffolds in the electroplated state. The high tortuosity of the structure leads to the preferential deposition of lithium on the upper surfaces of the metal scaffolds. This lithium accumulated on the upper surfaces blocks the ion transport inward and effectively reduces the internal capacity of the electrode. Additionally, it causes inhomogeneous current distribution and non-uniform lithium plating and stripping within the structure. Increasing the electrolyte conductivity and reducing the structural tortuosity of the electrode can significantly improve the uniformity of lithium plating and stripping in the metal scaffolds. It will increase the lifespan of the electrodes and the battery.

Keywords

Battery

Lithium-ion

Scaffold

Electrode

Nano-structure

Cyclability