Graphene-like carbon with three-dimensional periodicity prepared from organic-inorganic templates for energy storage application
Graphene-like carbon with three-dimensional periodicity prepared from organic-inorganic templates for energy storage application
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有机-无机模板制备的具有三维周期性的类石墨烯碳用于储能应用
DOI：
10.1016/j.carbon.2016.09.067
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发表时间：
2017
期刊：
影响因子：
10.9
通讯作者：
Huang Fuqiang
中科院分区：
文献类型：
--
作者：
Xu Feng;Lin Tianquan;Bi Hui;Huang Fuqiang
三维（3D）石墨烯的独立、共生和共价键合结构在能量应用的电和热传输性质方面可能具有很大的优势，但是所需的对称性和周期性相当难以设计和生产。在这里，我们使用有机-无机模板通过化学气相沉积来生长反蛋白石石墨烯结构。控制温度是一个多孔的聚甲基丙烯酸甲酯（PMMA）蛋白石，渗透与无机阳离子前体，形成一个界面相之间的球体。通过模板CVD在多孔无机氧化物（Al 2 O 3、MgO、SiO 2）界面相的表面上形成包含纳米厚的多孔碳的少层石墨烯片的石墨烯状反蛋白石，并且其在模板去除后保持自立。三维有序的微孔和中孔石墨烯反蛋白石具有高导电性，具有0.35 Ω sq− 1的低薄层电阻和972 m2 g −1的大比表面积。在N掺杂后，这种反蛋白石石墨烯表现出252 F g− 1的比电容，在5000次循环中保持稳定，为电化学储能应用提供了巨大的潜力。
Free-standing, intergrown and covalently-bonded structures of three-dimensional (3D) graphene may have great advantages in electric and thermal transport properties for energy applications, but the desired symmetry and periodicity are rather hard to design and produce. Here we use an organic-inorganic template to grow an inverse.opal graphene structure by chemical vapor deposition. The symmetry-controlling temperate is a porous polymethylmethacrylate (PMMA) opal, infiltrated with inorganic cation precursors that form an interfacial phase between spheres. A graphene-like inverse opal, comprising nanometer-thick porous carbon of few-layer graphene sheets, forms on the surfaces of the porous inorganic oxide (Al2O3, MgO, SiO2) interfacial phase by templated CVD, and it remains free-standing after template removal. The three-dimensional ordered microporous and mesoporous graphene inverse opals are highly conductive with a low sheet electrical resistance of 0.35 Ω sq−1and a large specific surface area of 972 m2g−1. After N-doping, this inverse opal graphene exhibits a specific capacitance of 252 F g−1that is stable over 5000 cycles, offering great potential for electrochemical energy storage applications.