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5日收盘，石墨烯概念板块指数报2005.01点，涨幅0.58%，成交220.4亿元，换手2.48%。板块个股中，跌幅最大的前3个股为：中国动力报21.34元，跌-2.87%。中科电气报17.48元，跌-3.48%。德尔未来报4.53元，跌-4.63%。涨幅最大的前3个股为：厦门信达报5.27元，涨10.02%；杭电股份报7.37元，涨10.00%；康盛股份报3.75元，涨9.97%。
石墨烯（Graphene）是一种由碳原子以sp2杂化轨道组成的六角形二维碳纳米材料，其形状可分为单层、双层和多层。它具有高导电性、高导热性、高柔性等优异性能，是应用广泛的二维材料。石墨烯独特的结构特点和优质的材料特性使其在生物、医学、复合材料、制造业、电子等领域得到广泛关注，拥有广阔的应用前景。
石墨烯根据层数的不同，可分为单层、双层和多层石墨烯。正常情况下，石墨烯是等角六边形的二维结构，其中五角元胞和七角元胞构成其缺陷。单层石墨烯是由一层以苯环结构周期性紧密堆积的碳原子构成的二维碳材料，仅吸收2.3%的可见光与红外光，常被应用于制造透明导电薄膜。双层石墨烯则是由两层以苯环结构周期性紧密堆积的碳原子以不同堆垛方式构成的二维碳材料。多层石墨烯则包含3-10层以苯环结构周期性紧密堆积的碳原子，同样以不同堆垛方式构成。不同层数的石墨烯展现出不同的物理、化学和机械性能，单层石墨烯结构相对简单，载流子呈线性色散关系；而双层和多层石墨烯结构则更为复杂，出现非线性和交叠现象。
中国石墨烯行业可分为上游原材料及设备供应商、中游石墨烯生产商以及下游石墨烯的应用领域。上游主要是石墨烯原材料与设备供应商，原材料包括石墨、甲烷气体等，设备则涵盖分散机、化学气相沉积设备等。中游为石墨烯生产商，根据产品形态的不同，石墨烯产品主要分为石墨烯粉体与石墨烯薄膜两种，这两者在制备方法和所需原材料上存在较大差异。下游则是石墨烯的应用行业，涵盖了新能源（如锂电池、超级电容器等储能材料）、涂料（如防腐涂料）、大健康、节能环保、电子信息（如柔性触控屏）等新兴产业。目前，中游的石墨烯头部生产商正在积极拓展上下游市场，推动一体化经营及产业链整合。