摘要
使用氯化铵改性葡萄糖水热碳化法,制备出了一系列以片状结构为主的碳基材料,提高了葡萄糖基碳材料的储能能力.通过改变氯化胺的加入量,碳基材料的形貌由球形转变为片状,当葡萄糖与氯化铵的摩尔比为 1:2时,所得材料的比表面积最大,为1187 m2/g,孔体积可达0.692 cm3/g.对该材料的电化学性能进行测试,结果表明:新的合成方法大大提高了材料的储能性能,在1A/g的电流密度下,材料的比电容能达到190 F/g.同时,在千次充放电后,材料的电容保持率能达到96.7%.
Abstract
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.
基金项目
内蒙古自治区自然科学基金项目(2021MS02029)
内蒙古自治区自然科学基金项目(2021BS02011)
内蒙古自治区自然科学基金项目(2020BS0503)
国家自然科学基金项目(21902080)
NETL
NSTL
万方数据