Surface fluorine preservation dependence of Ti3C2Tx MXene for high electrochemical properties in ionic liquid electrolytes

Guangyu Wang; Hao Wu; Yiming Liu; Yiwei Pang; Junsheng Hao; Fangqin Cheng; Aniu Qian; Hu Shi

doi:10.1039/d2cc06009d

Surface fluorine preservation dependence of Ti₃C₂T_x MXene for high electrochemical properties in ionic liquid electrolytes

Chem Commun (Camb). 2023 Jan 31;59(10):1369-1372. doi: 10.1039/d2cc06009d.

Authors

Guangyu Wang¹, Hao Wu², Yiming Liu¹, Yiwei Pang², Junsheng Hao¹, Fangqin Cheng², Aniu Qian², Hu Shi¹

Affiliations

¹ School of Chemistry and Chemical Engineering, Institute of Molecular Science, Shanxi University, Taiyuan 030006, P. R. China. hshi@sxu.edu.cn.
² Institute of Resources and Environment Engineering, Shanxi University, Taiyuan 030006, P. R. China. anqian@sxu.edu.cn.

PMID: 36649108
DOI: 10.1039/d2cc06009d

Abstract

We identified the contribution of -CF₃ terminations to the Ti₃C₂T_x surface structure when ethanol and water were used as solvents during delamination through experimental and computational studies. Ethanol-treated -CF₃-terminated Ti₃C₂T_x achieves better prevention of nanoflake aggregation, hydrophobicity, and small size, enabling enhanced capacitive properties in ionic liquid compared to water-treated Ti₃C₂T_x in aqueous and ionic liquid electrolytes.