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BUILDING ENERGY- AND SIZE-SCALABLE THREEDIMENSIONAL ENERGY-STORAGE ARCHITECTURES WITH CARBON NANOFOAM PAPER

机译:用碳纳米泡沫纸构建能量和尺寸可伸缩的三维能量存储架构

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Carbon fiber-paper–supported carbon nanofoams are ideal substrates for electrode architectures due to such inherent attributes as high specific surface area, high electronic conductivity, and a sizetunable pore network through-connected in three dimensions (3D) and co-continuous with the ~20-nm–wide carbon nanofoam network.1 The use of carbon fiber paper as a scaffold that molds the ultraporous carbon nanofoam facilitates scalability in length and width (~ 100 cm~2) as well as thickness (70–500 μm). The innate conductivity of the starting carbon fiber paper, which can range from 20 S cm~(-1) (such as for low density polyacrylonitrile-derived fibers) to 200 S cm~(-1) (for more graphitic fibers at > 0.4 g cm~(-3) fiber density) sets the floor for the conductivity of the nanofoam-filled paper, even though the conductivity of monolithic carbon nanofoam (a pyrolytic form of carbon) is only on the order of 1 S cm~(-1). The ability to x–y–z scale the fiber paper into macroscale dimensions coupled with its high electronic conductivity enable the resulting carbon nanofoam papers to serve as “device-ready” electrode architectures in batteries, electrochemical capacitors, and air cathodes.
机译:碳纤维纸支撑的碳纳米泡沫塑料是电极架构的理想基板,由于这种固有的属性是高比表面积,高电子导电性和三维(3D)通过连接的尺寸电导率和尺寸的孔网络,并且与〜与〜连续连续连续20-nm宽的碳纳米泡沫型网络.1使用碳纤维纸作为脚手架的脚手架,使超氧碳纳米泡沫塑料促进长度和宽度(〜100cm〜2)的可扩展性,以及厚度(70-500μm)。起始碳纤维纸的先天电导率,其范围为20 scm〜(-1)(例如低密度聚丙烯腈衍生的纤维)至200 s cm〜(-1)(用于更高的石墨纤维> 0.4 G cm〜(-3)纤维密度)设定用于纳米污物含量的含纳米涂料纸的电导率的地板,即使单片碳纳米泡沫状的电导率仅为1 s cm〜( - 1)。 X-Y-Z将纤维纸张施加到宏观尺寸,其高电子电导率耦合的宏观尺寸使得得到的碳纳米泡沫塑料纸作为电池,电化学电容器和空气阴极中的“设备就绪”电极架构。

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