Plasma enhanced synthesis of N doped vertically aligned carbon nanofibers on 3D graphene
Plasma enhanced synthesis of N doped vertically aligned carbon nanofibers on 3D graphene
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DOI：
10.1002/sia.6604
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发表时间：
2018-12
影响因子：
1.7
通讯作者：
Siddharth Mishra;H. Nguyen;Paa Kwasi Adusei;Y. Hsieh;V. Shanov
中科院分区：
文献类型：
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作者：
Siddharth Mishra;H. Nguyen;Paa Kwasi Adusei;Y. Hsieh;V. Shanov
石墨烯和碳纳米管/纤维（CNT/CNF）混合结构由于利用了两种纳米碳材料的非凡的电学和物理性质而成为高效电子、储能、热电和传感应用的前沿材料。最近的进展表明，通过引入另一种维度和结构形式-三维石墨烯（3DG），层状石墨烯的结构和表面积得到了成功的改善。在这项研究中，垂直排列的CNF生长使用等离子体增强化学气相沉积上一个相对较新的形式的压缩3DG。后者是使用常规的热化学气相沉积法合成的。在合成过程中通过氨等离子体原位掺杂所得到的自立式混合材料，并以混合纸的形式生产。使用电化学和光谱测量进行这种材料的表征。N掺杂的混合物在电化学测量中显示出比压缩的原始3DG相对更高的表面积和改善的面电流密度，这使其成为用作超级电容器、传感器和电化学电池的电极材料的潜在候选者。
Graphene and carbon nanotubes/fibers (CNT/CNF) hybrid structures are emerging as frontier materials for high‐efficiency electronics, energy storage, thermoelectric, and sensing applications owing to the utilization of extraordinary electrical and physical properties of both nanocarbon materials. Recent advances show a successful improvement in the structure and surface area of layered graphene by incorporating another dimension and structural form—three‐dimensional graphene (3DG). In this study, vertically aligned CNFs were grown using plasma enhanced chemical vapor deposition on a relatively new form of compressed 3DG. The latter was synthesized using a conventional thermal chemical vapor deposition. The resulting free‐standing hybrid material is in‐situ N doped during synthesis by ammonia plasma and is produced in the form of a hybrid paper. Characterization of this material was done using electrochemical and spectroscopic measurements. The N doped hybrid showed relatively higher surface area and improved areal current density in electrochemical measurements than compressed pristine 3DG, which makes it a potential candidate for use as an electrode material for supercapacitors, sensors, and electrochemical batteries.