The different temperature drying processes were carried out at −60 °C, 15 °C, and 60 °C to control the nanosheet morphology of MXene matrix. The MXene electrode prepared at −60 °C (denoted as LT-Ti₃C₂T_x) produced more nanosheet arrays than those with drying temperatures of 15 °C and 60 °C (denoted as RT-Ti₃C₂T_x and HT-Ti₃C₂T_x MXene electrodes, respectively). The results of BET and electrochemical measurements show that the specific surface area and capacitance initially decrease and then increase with the change in nanosheet layers in MXene. Among these prepared electrodes, LT-Ti₃C₂T_x, with a well-controlled nanosheet array, showed outstanding specific capacitance (Cs) of 467.4 F g⁻¹ at current density of 0.5 A g⁻¹, and 98.13% stability after 5000 cycles. Furthermore, an LT-Ti₃C₂T_x // LT-Ti₃C₂T_x symmetric supercapacitor device (SSD) was assembled, employing the LT-Ti₃C₂T_x with a well-controlled nanosheet acting as both anode and cathode. The SSD exhibited high energy density of 5.67 Wh kg⁻¹ at power density of 589.09 W kg⁻¹, and long cycle life electrochemical stability of 99.9% after 5000 cycles. These promising results show that MXene electrodes prepared by low-temperature drying (i.e. –60 °C) may be useful for supercapacitor applications.

在-60°C，15°C和60°C下进行不同温度的干燥过程，以控制MXene基质的纳米片形态。在-60°C下制备的MXene电极（表示为LT-Ti ₃ C ₂ T _x）产生的纳米片阵列比干燥温度分别为15°C和60°C（表示为RT-Ti ₃ C ₂ T _x和）的纳米片阵列更多。HT-Ti ₃ C ₂ T _x MXene电极）。BET和电化学测量的结果表明，比表面积和电容最初随着MXene中纳米片层的变化而减小，然后增加。在这些准备好的电极中，LT-Ti ₃具有良好控制的纳米片阵列的C ₂ T _x在0.5 A g ^-1的电流密度下显示出467.4 F g ^-1的出色比电容（Cs），并在5000次循环后具有98.13％的稳定性。此外，组装了LT-Ti ₃ C ₂ T _x // LT-Ti ₃ C ₂ T _x对称超级电容器器件（SSD），该器件采用LT-Ti ₃ C ₂ T _x并具有良好控制的纳米片作为两个阳极和阴极。SSD在589.09 W kg ^-1的功率密度下表现出5.67 Wh kg ^-1的高能量密度5000次循环后的长循环寿命电化学稳定性为99.9％。这些有希望的结果表明，通过低温干燥（即–60°C）制备的MXene电极可用于超级电容器应用。