Abstract
Two-dimensional (2D) titanium carbide (MXene) is considered as a potential anode material for lithium-ion batteries (LIBs) by virtue of its unique structural and electronic properties. However, its performance for actual energy storage is seriously affected by the loss of transition metal elements during the preparation process of MXene. Herein, using a simple hydrothermal method, vanadium was successfully doped into the delaminated Ti3C2T[Formula: see text] (named as V-doped Ti3C2T[Formula: see text]). As-prepared V-doped Ti3C2T[Formula: see text] MXenes provide more active sites and lower Li[Formula: see text] diffusion resistance. As a result, their rate performance is significantly improved compared to that of pristine Ti3C2T[Formula: see text]. Additionally, its discharge capacity retains a value of 63.6 mAh g[Formula: see text] after 10,000 cycles at 10 A g[Formula: see text].
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