Interface‐Induced Self‐Assembly Strategy Toward 2D Ordered Mesoporous Carbon/MXene Heterostructures for High‐Performance Supercapacitors
Zhilin Liu, Hailong Xiong, Yaxiao Luo, Liangliang Zhang, Liangliang Zhang, Kuo Hu, Ling Zhang, Ling Zhang, Yu Gao, Zhen‐An Qiao
Abstract
Abstract Two‐dimensional transition metal carbonitrides (MXene) have demonstrated great potential in many fields. However, the serious aggregation and poor thermodynamic stability of MXene greatly hinder their applications. Here, an interface‐induced self‐assembly strategy to synthesize ordered mesoporous carbon/Ti 3 C 2 T x heterostructures (OMCTs) was developed. In this method, the composite monomicelles formed by Pluronic F127 and low‐molecular‐weight phenolic resol self‐assembled on the surface of Ti 3 C 2 T x to prevent the restacking of Ti 3 C 2 T x and maintain its thermostability. The obtained OMCTs possessed high specific surface areas (259–544 m 2 g −1 ), large pore volumes (0.296–0.481 cm 3 g −1 ), and excellent thermodynamic stability (up to 600 °C). Benefiting from these advantages, OMCTs serving as the electrode materials for supercapacitor exhibited superior supercapacitor performances, including high capacitance of 247 F g −1 at 0.2 A g −1 , satisfactory rate performance of 190 F g −1 at 5 A g −1 , and cyclability.