A novel chrysanthemum-like titanium nitride (CL-TiN) has been synthesized through hydrothermal method combining reduction and nitridation treatment. The morphology of CL-TiN can be successfully obtained by strict controlling heating rates. The CL-TiN is characterized as microspherical structure with an average diameter of 2 μm and is assembled from two-dimensional leaf-like nanorods with a width of 200 nm and a length of 500 nm. The CL-TiN is employed to construct supercapacitors and exhibits excellent capacitive performance due to efficient ion diffusion as well as good structural stability. The specific capacitance of the CL-TiN in a three-electrode system is 23.35 F g^-1 at a current density of 1.0 A g⁻¹. Importantly, the capacitance retention still maintains 90.0% after 10 000 cycles at a scan rate of 0.1 V s⁻¹. Furthermore, a symmetric flexible-solid-state supercapacitor (FSS-SC) based on CL-TiN nanostructures with Na₂SO₄/carboxymethyl cellulose (CMC) gel as electrolyte is assembled. The supercapacitor shows excellent volumetric capacitance (7.48 F cm^-3 at 0.05 A cm⁻³), high energy density (0.34 mW h cm⁻³) and ultrafast-charging/discharging performance. The cycling stability is remarkable with a capacitance increase of about 36.7% after 20 000 cycles. This work could give a promising guidance for designing and fabricating ultrafast-charging/discharging and excellent stable supercapacitors.

通过水热法结合还原和氮化处理，合成了一种新型的菊花状氮化钛（CL-TiN）。严格控制加热速率可以成功获得CL-TiN的形貌。CL-TiN的特征是平均直径为2μm的微球形结构，由二维的叶状纳米棒组装而成，其宽度为200 nm，长度为500 nm。CL-TiN用于构建超级电容器，并且由于有效的离子扩散以及良好的结构稳定性而具有出色的电容性能。的CL-锡在三电极系统中的比电容是23.35 F G ^-1 在1.0克的电流密度^-1。重要的是，在以0.1 V s ^-1的扫描速率进行1万次循环后，电容保持率仍保持90.0％。此外，组装了基于CL-TiN纳米结构的对称柔性固态超级电容器（FSS-SC），其中Na ₂ SO ₄ /羧甲基纤维素（CMC）凝胶为电解质。超级电容器表现出优异的体积电容（7.48˚F厘米^-3  0.05甲厘米^-3），高能量密度（0.34毫瓦高厘米^-3）和超快充/放电性能。循环稳定性显着，在20 000次循环后，电容增加了约36.7％。这项工作可以为设计和制造超快速充电/放电以及出色的稳定超级电容器提供有希望的指导。