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2D MXenes are highly attractive for achieving ultrafast and stable lithium/sodium storage due to their good electric conductivity and abundant redox active sites. While, effective strategies for scalable preparation of oligolayered MXenes are still under exploration. Herein, oligolayered Ti 3 C 2 T x MXene is successfully obtained after conventional synthesis of multilayered Ti 3 C 2 and subsequent delamination process via an organic solvent of tetramethyl-ammonium hydroxide (TMAOH). Comprehensive electrochemical study reveals that surface-controlled redox reaction dominated the charge storage behavior of oligolayered Ti 3 C 2 T x with fast reaction kinetics. Impressively, the obtained oligolayered Ti 3 C 2 T x exhibits excellent lithium/sodium storage performance, featured for a high specific capacity of 330 mAhg −1 at 1.0 Ag −1 after 800 cycles for lithium storage and 280 mAhg −1 at 0.5 Ag −1 after 500 cycles for sodium storage. Such impressive performance will advance the development of oligolayered Ti 3 C 2 T x based materials for lithium/sodium storage and even broaden their application into energy storage.
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Song et al. (2020) studied this question.
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