Christian Bauer, Tobias Neff, Adam Day, Anke Krueger
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引用次数: 0
Abstract
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.