Relationship between particle shape and fast-charging capability of a dry-processed graphite electrode in lithium-ion batteries

• DOI: 10.1016/j.elecom.2024.107761
• Publication Date: 2024-05-21T16:15:23Z
• Authors: Jun Ho Hwang; Hyundong Yoo; Seungeun Oh; Hansu Kim
• Keywords: Particle (ecology)

Improving lithium-ion transport in electrodes by controlling electrode microstructure is a promising option for enhancing the fast-charging capability of graphite anodes batteries. Dry processing based on polytetrafluoroethylene binder has attracted considerable attention as an alternative to solvent-based wet processing. The morphology particles significant impact microstructure, but few reports have been published dry-processed anodes. In this work, we found that key factor determine well electrode. X-ray microscopy combined with mercury porosimetry and symmetrical cell electrochemical impedance spectroscopy reveal difference porosity between top bottom layers dry spherical greater than flake-shaped particles, resulting enhanced improved at high charging rate 5C (17.5 mA cm−2). These findings supply insights into effective design emphasis development anode materials dry-processing