Cyclic ultracapacitor for fast-charging and scalable energy storage system
| Autor: | Sun Hwa Yeon, Se Kook Park, Hana Yoon, Chang Soo Jin, Sang Young Lee, Yun Jung Lee, Dong-Ha Kim, Jung-joon Yoo, Dae-Wi Kim, Kyoung Hee Shin |
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| Rok vydání: | 2015 |
| Předmět: |
Battery (electricity)
Supercapacitor Materials science business.industry Mechanical Engineering Nuclear engineering Electrical engineering Building and Construction Pollution Capacitance Industrial and Manufacturing Engineering Energy storage Volumetric flow rate law.invention Capacitor General Energy Power rating law Electrical and Electronic Engineering business Current density Civil and Structural Engineering |
| Zdroj: | Energy. 93:210-219 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2015.09.037 |
| Popis: | ESSs (Energy storage systems) for large-scale grid systems and next generation secondary battery systems require an ideal device that satisfies diverse properties such as a high energy density, high power density, low cost, and safe and reliable performance. In this study, we present a CUCap (cyclic ultracapacitor), which is comprised of two reservoirs and one flat flow capacitor cell with a cyclic continuous flow mode and independently tunable power rating and energy capacity. CUCap provides fast-charging and high capacity technology with a simple and practical design for high density and large-scale energy storage systems. The best performance appeared in slurry ratio (electrode to electrolyte) 1 to 7 with the total reservoir volume of 150 mL and the flow rate 300 ml/min, resulting in volumetric energy density, specific capacitance, and discharge time of 7.7 Wh L −1 , 14.2 F ml −1 , 100 min, respectively. Moreover, the slurry electrode of the CUCap cell had a maximum current density around 260 mA cm −2 which could possibly result in a fast-charging CUCap system. |
| Databáze: | OpenAIRE |
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