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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >3D Hierarchical Boron-Doped Diamond-Multilayered Graphene Nanowalls as an Efficient Supercapacitor Electrode
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3D Hierarchical Boron-Doped Diamond-Multilayered Graphene Nanowalls as an Efficient Supercapacitor Electrode

机译：3D等级硼掺杂的金刚石 - 多层石墨烯纳米座为有效的超级电容器电极

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摘要

Synthesis of stable hybrid carbon nanostructure for high-performance supercapacitor electrode with long life-cycle for electronic and energy storage devices is a real challenge. Here, we present a one-step synthesis method to produce conductive boron-doped hybrid carbon nanowalls (HCNWs), where sp(2)-bonded graphene has been integrated with and over a three-dimensional curved wall-like network of sp(3)-bonded diamond. The spectroscopic studies such as X-ray absorption, Raman, and X-ray photoelectrons clearly reveal the coexistence of diamond and graphene in these nanowalls, while the detailed transmission electron microscopy studies confirm the unique microstructure where a diamond nanowall is encased by a multilayered graphene. Interestingly, these HCNWs yield a high double layer capacitance value of 0.43 mF cm(-2) and electrode retention of 98% over 10 000 cycles of charging/discharging in 1 M Na2SO4 electrolyte. The remarkable supercapacitive performance can be attributed to the 3D interconnected network of diamond nanowalls surrounded by highly conducting graphene.
机译：用于电子和能量存储装置长寿命的高性能超级电池电极的稳定杂交碳纳米结构是真正的挑战。在这里，我们提出了一种一步合成方法，以产生导电硼掺杂的混合碳纳米瓦尔（HCNW），其中SP（2） - 粘结的石墨烯已经与SP的三维弯曲壁图网络集成（3 ） - 金刚石。诸如X射线吸收，拉曼和X射线光电子的光谱研究清楚地揭示了在这些纳米瓦尔中的金刚石和石墨烯的共存，而详细的透射电子显微镜研究确认了金刚石纳米墙被多层石墨烯包裹的独特微观结构。有趣的是，这些HCNW在1M Na 2 SO 4电解质中产生0.43mF cm（-2）的高双层电容值0.43mF cm（-2），电极保持98％超过10 000次充电/放电。显着的超级电容性能可归因于由高导电石墨烯包围的金刚石纳米瓦尔的3D互连网络。

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