Nanomaterials Laboratory, Department of Mechatronics Engineering, Jeju National University, Jeju 63243, Republic of Korea.
Nanomaterials Laboratory, Department of Mechatronics Engineering, Jeju National University, Jeju 63243, Republic of Korea; Department of Advanced Convergence Science and Technology, Jeju National University, Jeju 63243, Republic of Korea.
J Colloid Interface Sci. 2019 Nov 15;556:411-419. doi: 10.1016/j.jcis.2019.08.055. Epub 2019 Aug 16.
Carbon- and carbon derivatives are widely employed as efficient electrode materials for supercapacitor applications. Herein, we demonstrate a cost-effective dip-coating process followed by dehydrohalogenation of PVDF-Ni for the preparation of carbyne enriched carbon anchored on nickel (CEC-Ni) as high-performance electrode material. The removal of halogens in the prepared CEC-Ni were widely characterized using XRD, XPS, Laser Raman, and FT-IR analysis. The occurrence of carbon-carbon vibration in the prepared CEC-Ni foam was confirmed using FT-IR spectroscopy. Laser Raman analysis confirms that the CEC-Ni foam contains both sp and sp hybridized carbon. The electrochemical properties of prepared carbyne enriched carbon anchored on nickel foam electrode (CEC-NiE) showed an ideal capacitive properties and delivered a maximum specific capacitance of about 106.12 F g with excellent cyclic retention. Furthermore, the mechanism of charge-storage in the CEC-NiE was analyzed using Dunn's method. In additon, the asymmetric supercapacitor device was fabricated using CEC-NiE as positive and rGO as negative electrode achieved a remarkable energy density of 33.57 Wh Kg with a maximal power density of 14825.71 W Kg. These results suggested that the facile preparation of CEC-NiE could be a promising and effective electrode material for future energy storage application.
碳及其衍生物被广泛用作超级电容器应用的高效电极材料。在此，我们展示了一种经济高效的浸涂工艺，随后对 PVDF-Ni 进行脱卤化氢处理，制备了富碳炔碳锚定在镍上（CEC-Ni）作为高性能电极材料。使用 XRD、XPS、激光拉曼和 FT-IR 分析广泛表征了制备的 CEC-Ni 中卤素的去除。使用 FT-IR 光谱证实了制备的 CEC-Ni 泡沫中存在碳-碳振动。激光拉曼分析证实 CEC-Ni 泡沫含有 sp 和 sp 杂化碳。制备的富碳炔碳锚定在镍泡沫电极（CEC-NiE）的电化学性能表现出理想的电容性能，并具有约 106.12 F g 的最大比电容和优异的循环保留率。此外，使用 Dunn 法分析了 CEC-NiE 的电荷存储机制。此外，使用 CEC-NiE 作为正极和 rGO 作为负极制造了非对称超级电容器装置，实现了 33.57 Wh Kg 的显著能量密度和 14825.71 W Kg 的最大功率密度。这些结果表明，CEC-NiE 的简便制备可以成为未来储能应用的有前途和有效的电极材料。
