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Preparation and characterization of graphene oxide paper

机译：氧化石墨烯纸的制备与表征

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Free-standing paper-like or foil-like materials are an integral part of our technological society. Their uses include protective layers, chemical filters, components of electrical batteries or supercapacitors, rnadhesive layers, electronic or optoelectronic components, and molecular storage. Inorganic 'paper-like' materials based on nanoscale components such as exfoliated vermiculite or mica platelets have been intensively studied and commercialized as protective coatings, high-temperature binders, dielectric barriers and gas-impermeable membranes. Carbon-based flexible graphite foils composed of stacked platelets of expanded graphite have long been used in packing and gasketing applications because of their chemical resistivity against most media, superior sealability over a wide temperature range, and impermeability to fluids. The discovery of carbon nanotubes brought about bucky paper, which displays excellent mechanical and electrical properties that make it potentially suitable for fuel cell and structural composite applications. Here we report the preparation and characterization of graphene oxide paper, a free-standing carbon-based membrane material made by flow-directed assembly of individual graphene oxide sheets. This new material outperforms many other paper-like materials in stiffness and strength. Its combination of macroscopic flexibility and stiffness is a result of a unique interlocking-tile arrangement of the nanoscale graphene oxide sheets.
机译：独立的纸状或箔状材料是我们技术社会不可或缺的一部分。它们的用途包括保护层，化学过滤器，电池或超级电容器的组件，粘合层，电子或光电组件以及分子存储。基于纳米级成分（如脱落的ver石或云母薄片）的无机“纸状”材料已得到深入研究，并已作为保护性涂层，高温粘合剂，介电屏障和不透气膜被商业化。由膨胀石墨的堆叠薄片组成的碳基柔性石墨箔由于其对大多数介质的化学抗性，在宽温度范围内的出色密封性以及对流体的不渗透性，长期以来一直用于包装和垫片应用。碳纳米管的发现带来了白纸，该白纸表现出出色的机械和电性能，使其有可能适用于燃料电池和结构复合材料应用。在这里，我们报告了氧化石墨烯纸的制备和表征，氧化石墨烯纸是一种通过单独的氧化石墨烯片的流向组装而制成的自立式碳基膜材料。这种新材料在硬度和强度方面优于许多其他纸质材料。其宏观柔韧性和刚度的结合是纳米级氧化石墨烯片独特的互锁瓦片排列的结果。

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