Enhancing Electrochemical Performance of Aluminum-ion Batteries with Fluorinated Graphene Cathode

Haiping Lei; Tianwei Wei; Jiguo Tu; Suqin Li; Shuqiang Jiao

doi:10.1002/cssc.202400423

Enhancing Electrochemical Performance of Aluminum-ion Batteries with Fluorinated Graphene Cathode

ChemSusChem. 2024 Apr 30:e202400423. doi: 10.1002/cssc.202400423. Online ahead of print.

Authors

Haiping Lei¹, Tianwei Wei¹, Jiguo Tu², Suqin Li¹, Shuqiang Jiao³

Affiliations

¹ University of Science and Technology Beijing, School of metallurgical and ecological engineering, CHINA.
² University of Science and Technology Beijing, State key laboratory of advanced metallurgy, CHINA.
³ University of Science and Technology Beijing, State Key Laboratory of Advanced Metallurgy, No 30 Xueyuan Road Haidian district, Beijing, Beijing, CHINA.

PMID: 38687091
DOI: 10.1002/cssc.202400423

Abstract

In pursuit of high-performance aluminum-ion batteries, the selection of a suitable positive electrode material assumes paramount importance, and fluorinated graphene (FG) nanostructures have emerged as an exceptional candidate. In the scope of this study, a flexible tantalum foil is coated with FG to serve as the positive electrode for aluminum-ion batteries. FG positive electrode demonstrates a remarkable discharge capacity of 109 mA h g-1 at a current density of 200 mA g-1, underscoring its tremendous potential for energy storage applications. Concurrently, the FG positive electrode exhibits a discharge capacity of 101 mA h g-1 while maintaining an impressive coulombic efficiency of 95% over 300 cycles at a current density of 200 mA g-1, which benefiting from the significant structure of FG. The results of the in-situ Raman spectroscopy signified the presence of intercalation/de-intercalation processes of AlCl4- behavior within the FG layers.

Keywords: Aluminum-ion batteries; Fluorinated graphene; In situ Raman; intercalation/de-intercalation.