Baskar Arun V, Davidraj Jefrin M, Ruban Ajanya M, Joseph Stalin, Singh Gurwinder, Al-Muhtaseb Ala'a H, Lee Jang Mee, Yi Jiabao, Vinu A
Global Innovative Center for Advanced Nanomaterials, The University of Newcastle, Callaghan, New South Wales 2308, Australia.
Department of Petroleum and Chemical Engineering, College of Engineering, Sultan Qaboos University, Muscat 123, P.O. Box 33, Oman.
J Nanosci Nanotechnol. 2021 Mar 1;21(3):1483-1492. doi: 10.1166/jnn.2021.19141.
We report on the synthesis of 3D mesoporous fullerene/carbon hybrid materials with ordered porous structure and high surface area by mixing the solution of fullerene and sucrose molecules in the nanochannels of 3D mesoporous silica, KIT-6 via nanotemplating approach. The addition of sucrose molecules in the synthesis offers a thin layer of carbon between the fullerene molecules which enhances not only the specific surface area and the specific pore volume but also the conductivity of the hybrid materials. The prepared hybrids exhibit 3D mesoporous structure and show a much higher specific surface area than that of the pure mesoporous fullerene. The hybrids materials are used as the electrodes for supercapacitor and Li-ion battery applications. The optimised hybrid sample shows an excellent rate capability and a high specific capacitance of 254 F/g at the current density of 0.5 A/g, which is much higher than that of the pure mesoporous fullerene, mesoporous carbon, activated carbon and multiwalled carbon nanotubes. When used as the electrode for Li-ion battery, the sample delivers the largest specific capacity of 1067 mAh/g upon 50 cycles at the current density of 0.1 A/g with stability. These results reveal that the addition of carbon in the mesoporous fullerene with 3D structure makes a significant impact on the electrochemical properties of the hybrid samples, demonstrating their potential for applications in Li-ion battery and supercapacitor devices.
我们报道了通过纳米模板法，将富勒烯和蔗糖分子的溶液混合在三维介孔二氧化硅KIT-6的纳米通道中，合成具有有序多孔结构和高比表面积的三维介孔富勒烯/碳杂化材料。在合成过程中添加蔗糖分子，在富勒烯分子之间形成了一层薄碳层，这不仅提高了杂化材料的比表面积和比孔容，还提高了其导电性。制备的杂化物呈现三维介孔结构，并且比纯介孔富勒烯具有更高的比表面积。这些杂化材料用作超级电容器和锂离子电池应用的电极。优化后的杂化样品表现出优异的倍率性能，在电流密度为0.5 A/g时，比电容高达254 F/g，远高于纯介孔富勒烯、介孔碳、活性炭和多壁碳纳米管。当用作锂离子电池电极时，该样品在电流密度为0.1 A/g下循环50次时，具有稳定的最大比容量1067 mAh/g。这些结果表明，在具有三维结构的介孔富勒烯中添加碳对杂化样品的电化学性能有显著影响，证明了它们在锂离子电池和超级电容器器件中的应用潜力。
