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Self-assembly synthesis of AgNPs@g-C3N4 composite with enhanced electrochemical properties for supercapacitors

  • D.F. Wang (a1), Y.Z. Wu (a1), X.H. Yan (a1) (a2) (a3), J.J. Wang (a1), Q. Wang (a1), C. Zhou (a1), X.X. Yuan (a1), J.M. Pan (a1) and X.N. Cheng (a1)...


AgNPs@g-C3N4 composite was synthesized from Ag-containing sol and g-C3N4 powder by the ultrasonic-assisted self-assembly method. The composite has hierarchical pore size distributions, which will be beneficial to the ion transport with different size. Ag nanoparticles with the size of 5 nm successfully adhere on the surface of g-C3N4. The AgNPs@g-C3N4 composite has excellent specific capacitance and specific power performance for the supercapacitors as an electrode material. The specific capacitance of composite is 4 times greater than that of g-C3N4. It can be ascribed to the introduction of Ag nanoparticles that the internal resistance of the composite is significantly decreased.


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Address all correspondence to Xuehua Yan at


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