This work reported the synthesis of V₂AlC with diverse microstructures by a molten salt method using multi-walled carbon nanotubes (MWCNT) and graphite powders as raw materials, respectively. V₂AlC microstructure has a significant effect on morphologies and electrochemical performances of as-etched V₂Al_1-xCT_z, thereinto V₂Al_1-xCT_z obtained from MWCNT exhibits the uniform and smooth three-dimensional nanosheet morphology with large specific surface area, and displays higher reversible capacities as an anode for lithium-ion batteries (LIBs), releasing 156.8 mAh·g⁻¹ at 0.5 A·g⁻¹ and 277.8 mAh·g⁻¹ at 0.1 A·g⁻¹ in the consecutive 500 and 220 cycles, respectively. Li-ions storage mechanism of V₂Al_1-xCT_z is intercalation pseudocapacitive, accompanied with the redox reactions of V-ions during the Li-ions insertion and extraction process. This work shows the potential of diverse structured V₂Al_1-xCT_z as anodes for the next-generation LIBs.

本工作报道了分别以多壁碳纳米管（MWCNT）和石墨粉为原料，通过熔盐法合成具有不同微观结构的V _{2 AlC。}V _{2 AlC 微结构对蚀刻后的 V 2} Al _{1- x} CT _z的形貌和电化学性能有显着影响，其中从 MWCNT 获得的 V ₂ Al _{1- x} CT _z呈现出均匀光滑的三维纳米片形貌，具有较大的比表面积，作为锂离子电池 (LIBs) 的负极具有更高的可逆容量，在 0.5 A·g时释放 156.8 mAh·g ^-1-1和 277.8 mAh·g ^-1在 0.1 A·g ^-1下分别在连续的 500 和 220 次循环中。_{V 2} Al _{1- x} CT _z的锂离子存储机制是嵌入赝电容，在锂离子嵌入和脱出过程中伴随着V离子的氧化还原反应。这项工作展示了不同结构的 V ₂ Al _{1- x} CT _z作为下一代 LIB 阳极的潜力。