Christian Bauer, Tobias Neff, Adam Day, Anke Krueger
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引用次数: 0
摘要
电能存储解决方案的使用日益增多,这就需要具有成本效益、可扩展和可持续的制造技术。带有电化学活性材料的功能性油墨沉积技术是一种合适的技术,因为它只能将具有特定性能的材料输送到所需的位置。然而,生产具有高浓度活性材料的稳定分散体--有效沉积所必需的--具有挑战性。在此,我们介绍一种以洋葱状碳为活性材料打印超级电容器电极的方法,该方法采用简单、经济高效的工艺和水基墨水。这种墨水稳定性高,可通过喷雾和喷墨技术沉积。制成的电极电容高达 14 mF cm-2(27 F g-1),5000 次循环后仍能保持 97% 的初始电容,证明了涂层的卓越性能和稳定性。
Scalable Fabrication of Flexible Supercapacitor Electrodes Using Sustainable Water-Based Onion-Like Carbon Inks
The increasing usage of electrical energy storage solutions demands for cost effective, scalable and sustainable manufacturing technologies. Deposition of functional inks, carrying electrochemically active materials is a suitable technique as it delivers material with selected properties only to required locations. However, the production of stable dispersions featuring high concentrations of active material - necessary for effective deposition - is challenging. Here we present an approach to print supercapacitor electrodes with onion-like carbon as active material, using a simple, cost-effective process as well as a water-based ink. The ink is highly stable and can be deposited by spray and inkjet techniques. The fabricated electrodes offer a capacitance of up to 14 mF cm-2 (27 F g-1) and retained 97% of their initial capacitance after 5000 cycles, demonstrating excellent performance and stability of the coating.
期刊介绍:
Electrochemical energy storage devices play a transformative role in our societies. They have allowed the emergence of portable electronics devices, have triggered the resurgence of electric transportation and constitute key components in smart power grids. Batteries & Supercaps publishes international high-impact experimental and theoretical research on the fundamentals and applications of electrochemical energy storage. We support the scientific community to advance energy efficiency and sustainability.