Abstract
We provide a method for preparation of binder-free cathode for rechargeable aluminum-ion batteries (AIBs). Ultrasonicated natural graphite (u-NG) flakes in N-methylpyrrolidone (NMP) is drop-casted to a carbon fiber cloth (CFC) to obtain binder-free u-GF@CFC cathode for AIBs. We also provide an in-situ Raman spectral technology and the corresponding in-situ Raman cell to determine the mechanism of intercalation/deintercalation reactions of the chloroaluminate ions at cathode of AIBs. The in-situ Raman spectra are recorded using a Raman spectrometer combined with a potentiostat/galvanostat model electrochemical workstation.•A simple preparation method of a binder-free u-GF@CFC cathode is suggested.•The u-GF@CFC cathode is obtained by drop-casting ultrasonicated graphite flakes on the surface and internal gaps of the carbon fiber cloth.•The method includes the in-situ Raman spectral technology and the corresponding in-situ Raman cell.
Highlights
The above analyses indicate that ultrasonicated graphite flakes (u-GF)@carbon fiber cloth (CFC) cathode prepared by above method has good stability and recuperability which contribute to long-term cycling life and high rate performance of the battery
It can be concluded that ultrasonication time influences the number of defects in u-GF, average size of the graphitic crystallite (La) of u-GF and concentration of u-GF/NMP dispersion
The u-GF/NMP dispersion obtained by ultrasonication for less than 6 h is more suitable for preparing the cathode of aluminum-ion batteries (AIBs)
Summary
Preparation and in-situ Raman characterization of binder-free u-GF@CFC cathode for rechargeable aluminum-ion battery.
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