通过扭转三根基于碳纳米管的混合纤维实现高能量和高功率密度。
Realizing both high energy and high power densities by twisting three carbon-nanotube-based hybrid fibers.
机构信息
State Key Laboratory of Molecular Engineering of Polymers, Collaborative Innovation Center of Polymers and Polymer Composite Materials, Department of Macromolecular Science and Laboratory of Advanced Materials, Fudan University, Shanghai 200438 (China).
Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai 200438 (China).
出版信息
Angew Chem Int Ed Engl. 2015 Sep 14;54(38):11177-82. doi: 10.1002/anie.201506142.
Energy storage devices, such as lithium-ion batteries and supercapacitors, are required for the modern electronics. However, the intrinsic characteristics of low power densities in batteries and low energy densities in supercapacitors have limited their applications. How to simultaneously realize high energy and power densities in one device remains a challenge. Herein a fiber-shaped hybrid energy-storage device (FESD) formed by twisting three carbon nanotube hybrid fibers demonstrates both high energy and power densities. For the FESD, the energy density (50 mWh cm(-3) or 90 Wh kg(-1) ) many times higher than for other forms of supercapacitors and approximately 3 times that of thin-film batteries; the power density (1 W cm(-3) or 5970 W kg(-1) ) is approximately 140 times of thin-film lithium-ion battery. The FESD is flexible, weaveable and wearable, which offers promising advantages in the modern electronics.
储能装置，如锂离子电池和超级电容器，是现代电子产品所必需的。然而，电池的低功率密度和超级电容器的低能量密度的固有特性限制了它们的应用。如何在一个装置中同时实现高能量和高功率密度仍然是一个挑战。在此，通过扭转三根碳纳米管混合纤维形成的纤维状混合储能装置（FESD）展示了高能量和高功率密度。对于 FESD，能量密度（50 mWh cm(-3) 或 90 Wh kg(-1)）比其他形式的超级电容器高出许多倍，大约是薄膜电池的 3 倍；功率密度（1 W cm(-3) 或 5970 W kg(-1)）大约是薄膜锂离子电池的 140 倍。FESD 具有柔韧性、可编织性和可穿戴性，在现代电子产品中具有广阔的应用前景。
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