Abstract High-quality binder-free electrodes are the core parts of film supercapacitors, and play an important role in the advancement of energy storage systems. In this work, we report advanced TiC@C composites by a facile one-step chemical vapor deposition method. Interestingly, carbon shell is uniformly coated on the surface of highly conductive TiC core to form integrated binder-free electrodes with high surface area and large porosity. Integration design can ensure good mechanical stability, fast ion and electron transfer and large active area. The electrochemical performance of TiC@C composites is characterized as the electrodes of supercapacitors, and demonstrated with enhanced capacitance and cycling life. The TiC@C composites deliver a capacitance of 120 F g-1 at 1 A g-1 and keep good retention. Our research provides a new carbon-based electrode for supercapacitor application.

中文翻译：

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用于超级电容器应用的碳化钛/碳复合材料的合成

摘要 高质量的无粘合剂电极是薄膜超级电容器的核心部件，在储能系统的发展中发挥着重要作用。在这项工作中，我们通过简便的一步化学气相沉积方法报告了先进的 TiC@C 复合材料。有趣的是，碳壳均匀地涂覆在高导电性 TiC 核的表面，形成具有高表面积和大孔隙率的集成无粘合剂电极。一体化设计可确保良好的机械稳定性、快速的离子和电子转移以及大的活性面积。TiC@C 复合材料的电化学性能被表征为超级电容器的电极，并具有增强的电容和循环寿命。TiC@C 复合材料在 1 A g-1 时提供 120 F g-1 的电容并保持良好的保留。