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

Published online by Cambridge University Press:  04 March 2019

D.F. Wang
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Y.Z. Wu
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
X.H. Yan*
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China Institute for Advanced Materials, Jiangsu University, Zhenjiang 212013, Jiangsu, China Institute of Green Materials and Metallurgy, Jiangsu University, Zhenjiang 212013, Jiangsu, China
J.J. Wang
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
Q. Wang
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
C. Zhou
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
X.X. Yuan
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
J.M. Pan
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
X.N. Cheng
Affiliation:
School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
*
Address all correspondence to Xuehua Yan at xhyan@mail.ujs.edu.cn
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Abstract

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.

Type
Research Letters
Copyright
Copyright © Materials Research Society 2019 

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