Preparation of modified glucose-based carbon and its energy storage properties
In this paper,a series of carbon-based materials with a predominantly sheet-like structure were prepared by hydrothermal carbonisation of ammonium chloride-modified glucose to improve the energy storage capacity of glucose-based carbon materials.By var-ying the addition of amine chloride,the morphology of the carbon-based materials was changed from spherical to flaky.The specific surface area of the resulting materials was maximized at 1187 m2/g with a pore volume of 0.692 cm3/g when the molar ratio of glucose to ammonium chloride was 1:2.The electrochemical properties of the materials were tested,and the results showed that the energy stor-age performance of the materials was greatly improved by adopting the new synthesis method,with the specific capacitance of the mate-rials reaching 190 F/g at a current density of 1 A/g.The capacitance retention rate of the material reached96.7%after 1,000 charge/discharge cycles.
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