Fluorination of Al₂O₃ Coating for Lithium-Ion Battery

Author

Xinhua Liang, Missouri University of Science and TechnologyFollow
Han Yu

Abstract

Improving the performance of cathodes by using surface coatings has proven to be an effective method for improving the stability of Li-ion batteries (LIBs), while a high quality film satisfying all requirements of electrochemical inertia, chemical stability, and lithium ion conductivity has not been found. A composite film composed of AI₂O₃ and AIF3 layers was coated on the surface of Li-rich NMC based electrodes by atomic layer deposition (ALD). The electrochemical characterization results indicated that the coating with 1 cycle of AIF3 ALD on 5 cycles of AI₂O₃ ALD (1 A1 F3-5AI₂O₃) significantly improved the cycling stability and alleviated the voltage attenuation problem of Li-rich NMC based electrodes by suppressing side reactions between the electrolyte and electrode, as well as inhibiting the transformation of layered Li₂MnO₃ into a spinel-like phase.

Recommended Citation

X. Liang and H. Yu, "Fluorination of Al₂O₃ Coating for Lithium-Ion Battery,", Jan 2021.

Department(s)

Chemical and Biochemical Engineering

Comments

Application filed by The Curators Of The University Of Missouri

Patent Application Number

PCT/US2020/032299

Patent Number

WO2020251710A3

Document Type

Patent

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2021 Curators of the University of Missouri, All rights reserved.

Publication Date

21 Jan 2021