Hydrazine monohydrate modifying Ti3C2Tx in alkaline electrolytes for high-performance capacitive properties

Abstract MXene has shown a bright future in the electrochemical field, benefiting from its excellent conductivity and surface hydrophilicity. However, the performance of MXene in the field of supercapacitors is seriously impaired by restacking and a large number of F-containing functional groups, especially in alkaline electrolytes. Herein, hydrazine monohydrate is used to intercalate Ti 3 C 2 T x , and the surface chemistry of MXene is effectively optimized. In 2 M KOH, the specific capacitance of Ti 3 C 2 -HM after modification is 157 F/g, which is 35% higher than the original one.