Preparation and characterization of five kinds of starch gel electrolytes and their supercapacitors
WANG Yuying
MA Deyang
YANG Yiran
HAN Xiao
WANG Yi
BU Xinyu
ZHOU Huawei
Abstract：This paper adopted the simple method to develop five kinds of green quasi-solid starch gel elec-trolyte(SGE)of sweet potato,corn,mung bean,lotus root and potato.In this method,KOH promoted the starch to form a gel,and could also act as an electrolyte.The results of volatility and viscosity of SGE show that the mass retention of SGE is 60％～80％at 70 ℃ for 100 min,which is higher than that of KOH solution(55.56％).The viscosity of SGE decreases with increasing the shear rate.A porous mesh is observed in the SGE by scanning electron microscope.The specific capacitance of the supercapacitor as-sembled with lotus root starch gel is up to 14 F/g.After 10 000 cycles,the specific capacitance retention rate of SGE-supercapacitor is close to 100％,and it shows excellent coulomb efficiency.This study pro-vides new ideas for the development of gel electrolyte.
Keywords：starchgel electrolytevolatilityquasi-solid statesupercapacitor
Publication Date：2025-06-25
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：12( 411-420,后插1-后插6,封3 )