Fast assembly of MXene hydrogels by interfacial electrostatic interaction for supercapacitors

Peng, Mengke; Yang, Weizu; Li, Longbin; Zhang, Kaiyang; Wang, Li; Hu, Ding; Yuan, Kai; Chen, Yiwang

Fast assembly of MXene hydrogels by interfacial electrostatic interaction for supercapacitors

2021

A simple and fast method for preparing MXene hydrogels is proposed by introducing protonated thionine molecules into a MXene dispersion through electrostatic interaction. Such a 3D hydrogel effectively suppressed restacking and oxidation, and enlarged the surface utilization of the MXene, producing an improved specific capacitance of 163 F g⁻¹ at 1 A g⁻¹ and excellent stability when used as an electrode material for supercapacitors.

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