Fly ash composite material as well as preparation method and application thereof

• Main Authors: XU YUN, XU JINGXIN, ZHUANG KE, ZHU FAHUA, ZHANG QIAN, DING BOYIN, GU JIAMING, CAI JINGMING
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY

The invention relates to the field of supercapacitors, and discloses a fly ash composite material and a preparation method and application thereof. The fly ash composite material is prepared from the following raw materials: river sand, a cementing material, an alkali activator, polyvinyl alcohol fibers and modified carbon fibers, wherein the cementing material is a mixture of fly ash, slag and silica fume. The fly ash composite material has good strength and ductility, and a capacitor prepared from the fly ash composite material is stable in performance, high in charging and discharging efficiency and large in energy density and can be applied to large-capacity energy storage aspects of residence, traffic, industrial application and the like. 本发明涉及超级电容器领域，公开了一种粉煤灰复合材料及其制备方法和应用。制备所述粉煤灰复合材料的原料含有河沙、胶凝材料、碱激活剂、聚乙烯醇纤维和改性碳纤维；其中，所述胶凝材料为粉煤灰、矿渣和硅灰的混合物。所述粉煤灰复合材料兼具良好的强度和延性，采用该粉煤灰复合材料制备的电容器其性能稳定，充放电效率高，能量密度大可运用在住宅、交通和工业应用等大容量的能量存储方面。