Abstract
Herein, we report a simple electrochemical method to exfoliate the Ti3AlC2 MAX phase and also investigate the Al3+ ion storage phenomenon in aqueous electrolyte. The exfoliation process avoids the harmful Hydrofluoric acid, which is often used for the processing of MXenes. It is demonstrated that exfoliation could be achieved when a hybrid aqueous electrolyte was utilized for the electrochemical treatment of Ti3AlC2. Additionally, porous surface structure could also be noticed. The electrolyte is an aqueous mixture of 1 M AlCl3 and 5 M NaOH (1:10 v/v). The exfoliation was evidenced by electron microscopy images, XRD patterns and Raman spectra. The Al3+ ion storage behaviour is also demonstrated in the exfoliated MAX phase. It was revealed that kinetics is governed by a diffusion-controlled process.
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Acknowledgements
This study is supported by SERB, DST, Government of India (grant no.: CRG/2018/000263). We also acknowledge the FESEM facility supported by the DST FIST programme. DS acknowledges the DST-INSPIRE for the INSPIRE fellowship (IF170606).
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Sarmah, D., Goswami, T.K. & Das, S.K. Aqueous electrolyte-mediated Al3+ ion storage in electrochemically treated Ti3AlC2. Bull Mater Sci 47, 23 (2024). https://doi.org/10.1007/s12034-023-03095-y
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DOI: https://doi.org/10.1007/s12034-023-03095-y