Impact of Electrode Architecture on Electrochemical Performance of Aqueous Processed, High-Loaded Lithium-Ion Battery Cathodes

Abstract

This study compares two electrode architectures, one with a porous carbon current collector (PC) and the other with a state-of-the-art aluminum foil current collector (AF). The results show that the porous carbon outperforms the aluminum foil at high loadings (∼8 mAh/cm2) during cycling, likely due to better adhesion. The characterization methods used in the study include electrochemical cycling, electrochemical impedance spectroscopy (EIS), galvanostatic intermittent titration technique (GITT), and scanning electron microscopy (SEM). These methods provide insight into the performance of the two electrode architectures and allow for a comprehensive comparison between them. The findings of this study indicate that the use of porous carbon as a current collector can lead to improved performance in high-loading electrode applications, making it a promising alternative to traditional aluminum foil current collectors.