高性能锂离子电容器用二氧化锰纳米管/氧化石墨烯复合阳极

IF 5.4 Q2 CHEMISTRY, PHYSICAL Journal of Power Sources Advances Pub Date : 2023-10-01 DOI:10.1016/j.powera.2023.100130
M. Binari , A.C. Lokhande , F. AlMarzooqi , Daniel S. Choi
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引用次数: 0

摘要

锂离子电容器(LIC)已成为电子行业中有前途的储能设备。LIC的性能主要受所用电极材料的影响,因此正确选择和开发所述材料至关重要。本研究的重点是使用一种简单、经济高效、环保的技术,将二氧化锰(MnO2)纳米管和氧化石墨烯(GO)相结合,制备复合电极材料。MnO2的低成本、高天然丰度和高理论比容量(1230mAh/g)使其能够有效地用于储能系统。所得材料展示了一种独特的结构,其中MnO2纳米管纳米棒被GO纳米片包裹。通过采用无粘合剂的buckypaper方法,MnO2纳米管/GO复合阳极表现出优异的电化学性能,包括高能量(213.29Wh/kg)和高功率密度(28.5kW/kg)、改进的倍率能力和优异的循环稳定性。这些发现无疑表明了MnO2纳米管/GO复合阳极在锂离子储能系统中的广阔前景。
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MnO2 nanotube/GO composite anode for high performance lithium-ion capacitor

Li-ion capacitors (LICs) have emerged as promising energy storage devices within the electronic industry. The performance of LICs is predominantly influenced by the electrode material utilized, making the proper selection and development of said material of utmost importance. This study focuses on fabricating a composite electrode material using a simple, cost-effective, and environmentally friendly technique, combining Manganese dioxide (MnO2) nanotube and graphene oxide (GO). The low cost, high natural abundance, and high theoretical specific capacity (1230 mAh/g) of MnO2 enables it to be effectively used in energy storage systems. The resulting material showcases a distinctive architecture where MnO2 nanotube nanorods are enveloped by GO nanosheets. By employing a binder-free buckypaper approach, the MnO2 nanotube/GO composite anode exhibits exceptional electrochemical performance, including high energy (213.29 Wh/kg) and power density (28.5 kW/kg), improved rate capability, and excellent cyclic stability. These findings undoubtedly indicate a promising future for the MnO2 nanotube/GO composite anode in lithium-ion-based energy storage systems.

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来源期刊
CiteScore
9.10
自引率
0.00%
发文量
18
审稿时长
64 days
期刊最新文献
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