MXene aerogel with three-dimensional porous structure is an ideal electrode material for supercapacitors.Ti3C2Tx MXene,obtained by etching with hydrochloric acid and lithium fluoride,was mixed with pre-crosslinked chitosan (CS) to prepare Ti3C2Tx/CS composite aerogel membrane.The composition,layer spacing and morphology of the Ti3C2Tx/CS composite aerogel membrane were analyzed by means of Fourier transform infrared spectroscopy,X-ray diffraction,scanning electron microscopy and other means.The electrochemical performance of the samples was tested using an electrochemical workstation.The results showed that the composite aerogel synthesized by CS/MXene with the mass ratio of 1∶8 had large layer spacing and excellent electrochemical performance.When tested at a current density of 1A/g,the specific capacitance reached 288.9F/g.Even when the current density increased to 100A/g,the specific capacitance still reached 222.2F/g,with a capacitance retention rate of 72.1%,demonstrating its excellent rate performance.
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基金资助
国家自然科学基金(51302109)
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