三维结构聚丙烯酰胺/聚乙烯醇水凝胶的合成及其在超级电容器中的应用

doi:10.11896/j.issn.1005-023X.2018.17.002

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Abstract The polyacrylamide/poly(vinyl alcohol) (PAM-PVA) hydrogels with three-dimensional network structure were synthesized, taking ammonium persulfate (APS) and N-N dimethylbisacrylamide (NMBA) as initiators and crosslinkers, respectively. The gel polymer electrolyte was prepared by immersing the obtained hydrogel in 6 mol/L KOH solution for different duration, and the gel polymer electrolyte was adopted to assemble supercapacitor. The electrochemical performance of the assembled supercapacitor was studied by electrochemical techniques including cyclic voltammetry, constant current charge-discharge and AC impedance. The stability of the assembled supercapacitor was evaluated by blue electric monitoring system. The results showed that the supercapacitor with the best performance was prepared via the gel polymer electrolyte obtained from the reaction of 2.0 g PVA with 10.0 g acrylamide and further 72 h electrolyte solution absorption. Its specific capacitance can reach 230 F/g and the capacitance retention rate kept 98% after 5 000 cycles.

Key words： quasi-solid-state supercapacitors polyacrylamide/poly (vinyl alcohol) hydrogels three-dimensional structure energy storage

Published: 19 September 2018

CLC number:

TQ317.4

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	WANG Dexuan
	WANG Lei
	YU Liangmin

Cite this article:

WANG Dexuan,WANG Lei,YU Liangmin. Synthesis of Three-dimensional Polyacrylamide/Poly(vinyl alcohol) Hydrogel and Its Application in Supercapacitor[J]. Materials Reports, 2018, 32(17): 2907-2911.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.17.002 OR http://www.mater-rep.com/EN/Y2018/V32/I17/2907

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