Development of MOF anode material for improved fast-charging for Li-ion batteries

A study conducted by Nobuhiro Ogihara et al. was published in the Nature Communications.

With the increasing demand for lithium-ion batteries, improving their fast-charging performance has become crucial. The improved conductivity of electrons and lithium ions inside the electrode material offers its fast-charging performance.
This study focused on the design of a metal-organic framework material that combines heterogeneous organic frameworks. By integrating machine learning prediction and spray-dry synthesis, a new negative electrode material with excellent safety and fast-charging performance was successfully developed. The optimal sample forms a characteristic distorted crystal structure, which suppresses molecular vibrations that impede electron transfer and lead to high Li diffusivity within the crystal. Furthermore, device evaluation confirmed long life cycle performance. The proposed material is expected to contribute to carbon neutrality by reducing heat loss due to lower resistance, minimizing resource risk, and lowering energy consumption during manufacturing.

Title: Heterogeneous Intercalated Metal-organic Framework Active Materials for Fast-charging Non-aqueous Li-ion Capacitors
Authors: Ogihara, N., Hasegawa, M., Kumagai, H., Mikita, R., Nagasako, N.
Journal Name: Nature Communications
Published: March 16, 2023
https://doi.org/10.1038/s41467-023-37120-9