三氧化钼纳米带自组装柔性薄膜超级电容器的制备及其性能研究

采用单质钼为钼源，水热合成了具有高长径比的三氧化钼（MoO3）纳米带，并通过减压抽滤制备了MoO3纳米带自组装柔性薄膜。对MoO3纳米带的形貌和结构进行了表征，采用三电极体系研究了MoO3纳米带的电化学电容行为，考察了MoO3纳米带自组装柔性薄膜直接作为电极组装柔性薄膜电容的性能。实验结果表明，MoO3纳米带的长度为6~10 μm，宽度为100~300 nm，厚度为7~10 nm，MoO3纳米带自组装薄膜显示了很高的柔性，在100 mV/s的扫描速率下面积比电容为340 mF/cm2。以此组装的柔性薄膜电容在5 mA/cm2的电流密度下，2 000圈循环后电容保持率可达80%。;Using molybdenum powders as precursor,the MoO3 nanobelts with high aspect ratio were synthesized by hydrothermal method.The MoO3 nanobelts self-assembled films were further fabricated by vacuum-assisted filtration.The morphology and structure of MoO3 nanobelts were characterized,and the electrochemical capacitance behavior of MoO3 nanobelts was studied by three-electrode method.The capacitance performances of MoO3 nanobelts film assembled flexible supercapacitors were also studied.The experimental results show that the MoO3 nanobelt has a length of about 6~10 μm,a width of 100~300 nm,and a thickness of about 7~10 nm.The MoO3 nanobelt self-assembled film exhibits a high flexibility.The MoO3 film has an area specific capacitance of 340 mF/cm2 at a scan rate of 100 mV/s.The capacitance retention rate can reach 80% after 2 000 cycles at a current density of 5 mA/cm2