Cl-Assisted Large Scale Synthesis of Cm-Scale Buckypapers of Fe₃C-Filled Carbon Nanotubes with Pseudo-Capacitor Properties: The Key Role of SBA-16 Catalyst Support as Synthesis Promoter.
Cl-Assisted Large Scale Synthesis of Cm-Scale Buckypapers of Fe₃C-Filled Carbon Nanotubes with Pseudo-Capacitor Properties: The Key Role of SBA-16 Catalyst Support as Synthesis Promoter.
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Cl辅助大规模合成具有赝电容特性的 Fe3C 填充碳纳米管的 Cm 级巴基纸：SBA-16 催化剂载体作为合成促进剂的关键作用
DOI：
10.3390/ma10101216
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发表时间：
2017-10-23
期刊：
影响因子：
--
通讯作者：
Corrias A
中科院分区：
文献类型：
--
作者：
Boi FS;He Y;Wen J;Wang S;Yan K;Zhang J;Medranda D;Borowiec J;Corrias A
我们展示了一种新的化学气相沉积（CVD）方法，其中通过在硅衬底上沉积介孔负载催化剂（SBA-16）来实现大规模制造铁磁填充的厘米级巴基纸。我们证明，SBA-16具有促进碳纳米管（CNT）在水平面上以随机取向而不是在垂直方向上生长的关键作用，因此允许容易地制造厘米级CNT巴基纸，不含在先前的报告中观察到的巴基纸表面上的洋葱皮副产品。通过扫描电子显微镜（SEM）、能量色散X射线（EDX）、透射电子显微镜（TEM）、高分辨透射电子显微镜（HRTEM）和热重分析（TGA）对所获得的CNT-巴基纸的形貌和组成进行了详细分析，而结构分析通过XRD数据的Rietveld精化进行。对所制备的巴基纸的室温磁性能进行了研究，发现其具有650 Oe的高矫顽力。此外，这些巴基纸的电化学性能也得到了证实，并显示出与伪电容器相容的行为（磁阻电容器）具有比先前研究的Fe填充的CNT的层状巴克纸中呈现的那些更好的性能，通过热解二氯苯-二茂铁混合物获得。这些测量结果表明，这些材料显示出在能量存储系统中作为柔性电极的应用前景。
We show a novel chemical vapour deposition (CVD) approach, in which the large-scale fabrication of ferromagnetically-filled cm-scale buckypapers is achieved through the deposition of a mesoporous supported catalyst (SBA-16) on a silicon substrate. We demonstrate that SBA-16 has the crucial role of promoting the growth of carbon nanotubes (CNTs) on a horizontal plane with random orientation rather than in a vertical direction, therefore allowing a facile fabrication of cm-scale CNTs buckypapers free from the onion-crust by-product observed on the buckypaper-surface in previous reports. The morphology and composition of the obtained CNTs-buckypapers are analyzed in detail by scanning electron microscopy (SEM), Energy Dispersive X-ray (EDX), transmission electron microscopy (TEM), high resolution TEM (HRTEM), and thermogravimetric analysis (TGA), while structural analysis is performed by Rietveld Refinement of XRD data. The room temperature magnetic properties of the produced buckypapers are also investigated and reveal the presence of a high coercivity of 650 Oe. Additionally, the electrochemical performances of these buckypapers are demonstrated and reveal a behavior that is compatible with that of a pseudo-capacitor (resistive-capacitor) with better performances than those presented in other previously studied layered-buckypapers of Fe-filled CNTs, obtained by pyrolysis of dichlorobenzene-ferrocene mixtures. These measurements indicate that these materials show promise for applications in energy storage systems as flexible electrodes.