摘要
为保证防雷击系统安全稳定运行,提高防雷击系统中的石墨纸性能成为关键。因此本试验采用涂布法将氧化石墨烯乙醇分散液涂覆到石墨纸表面,制备一种氧化石墨烯复合石墨纸。然后从厚度和密度两个方面对这种复合石墨纸的导热性能以及电热性能进行分析,最后以这种复合石墨纸组装超级电容器,并考察其应用效果。结果表明,当复合石墨纸的厚度为0.10mm、密度为1.6g·cm^(-3)时,材料导热性能以及电热性能较好,此时复合石墨纸导热系数为719W·(m·K)^(-1),发热量为3581J。除此之外,由这种复合石墨纸组装的超级电容器在4000次电化学循环时电容保持率为93.7%,循环稳定性良好,可保证防雷击系统安全稳定运行。综上,这种氧化石墨烯复合石墨纸具备良好的导热性能以及电热性能,且在防雷击系统中的应用效果良好,可为进一步提高防雷击系统的稳定性与可靠性提供了新的思路和方向。
Improving the performance of graphite paper in lightning protection systems is crucial to ensure their safe and stable operation.Therefore,in this experiment,the graphene oxide ethanol dispersion was coated onto the surface of graphite paper using a coating method to prepare a graphene oxide composite graphite paper.Then,the thermal conductivity and electrical heating performance of this composite graphite paper were analyzed from the aspects of thickness and density.Finally,a supercapacitor was assembled using this composite graphite paper and its application effect was examined.The results showed that when the thickness of the composite graphite paper was 0.10mm and the density was 1.6g·cm^(-3),the material had good thermal conductivity and electrical heating performance.At this time,the thermal conductivity of the composite graphite paper was 719W·(m·K)^(-1),and the heat generation was 3581J.In addition,the supercapacitor assembled from this composite graphite paper has a capacitance retention rate of 93.7%after 4000 electrochemical cycles,with good cycling stability,ensuring the safe and stable operation of the lightning protection system.In summary,this graphene oxide composite graphite paper has good thermal conductivity and electrical heating properties,and has a good application effect in lightning protection systems,providing new ideas and directions for further improving the stability and reliability of lightning protection systems.
作者
仝杨
张国超
刘小兵
倪少剑
龚国平
TONG Yang;ZHANG Guochao;LIU Xiaobing;NI Shaojian;GONG Guoping(Hubei Qingjiang Hydropower Development Co.,Ltd,Yichang 443000,China;Shenzhen Weili Industrial Co.,Ltd,Shenzhen 518055,China)
出处
《造纸科学与技术》
2025年第7期5-9,共5页
Paper Science And Technology
基金
湖北能源集团股份有限公司资助项目(ENQJ-GZ1-HW-2024031)。
关键词
石墨纸
氧化石墨烯
导热系数
电热性能
循环稳定性
graphite paper
oxidized graphene
thermal conductivity
electric heating performance
cyclic stability
