自组装柔性Ti3C2Tx MXene基热充电超级电容器

Thermally chargeable supercapacitors(TCSCs)have unique advantages in the collection,conversion,and storage of thermal energy,contributing to the development of new strategies for thermal energy utilization.2D MXene materials are predicted to be highly promising new thermoelectric materials.Here,we report a self-assembled flexible Ti3C2Tx MXene-based TCSC device,using prepared Ti3C2Tx MXene as the capacitor electrode and a NaClO4/PEO gel as the electrolyte.We also explore the working mechanism of the TCSCs.The fabricated Ti3C2Tx-based TCSCs exhibit an excellent Seebeck coefficient of 11.8 mV∙K-1 on average and maintain good cycling stability under various temperature differences.Demonstrations of multi-ple practical applications show that Ti3C2Tx MXene-based TCSC devices are excellent candidates for self-powered integrated elec-tronic devices.