Aerospace Engineering Commons^™

A Comprehensive Experimental And Modeling Study On Dissolution In Li-Ion Batteries, Yoon Koo Lee, Jonghyun Park, Wei Lu

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Dissolution is a critical challenge in metal oxide battery materials, which affects battery performance across multiple scales. At the particle level, the loss of active material as a result of dissolution directly results in capacity fade. At the electrode level, the re-deposition of dissolved metal ions onto the cathode increases cell polarization and hinders lithium transport. At the cell level, the dissolved ions further transport to and deposit on the anode, which consumes cycle-able lithium and leads to capacity fade. These processes lead to poor lithium reversibility, diffusivity, and conductivity. In this work, detailed experimental studies from the particle level …