Study of solid alkaline electrolyte under high temperatures and its application in electrochemical capacitors for AC line-filtering
| Autor: | Sue M. Butler, Jak Li, Han Gao, Keryn Lian, Ronald A. Outlaw, John R. Miller |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Graphene Capacitive sensing Energy Engineering and Power Technology 02 engineering and technology Electrolyte 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound Capacitor chemistry Chemical engineering law Electrode Hydroxide Electrical and Electronic Engineering Physical and Theoretical Chemistry 0210 nano-technology Nanosheet |
| Zdroj: | Journal of Power Sources. 417:145-149 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2019.02.019 |
| Popis: | An ultra-high rate solid-state electrochemical capacitor (EC) is studied for 60 Hz AC line-filtering applications. The combination of vertically-oriented graphene nanosheet electrodes and a hydroxide ion-conducting tetraethylammonium hydroxide-polyacrylamide polymer electrolyte enabled an interdigitated planar EC with capacitive behaviour at rates up to 1000 V s−1 and a response time of less than 1 ms. This performance level was maintained for over 3 weeks without capacitor packaging. The EC responded capacitively at 120 Hz at a temperature of 120 °C, demonstrating outstanding high-temperature resiliency. Thermal and chemical characterizations of the polymer electrolyte revealed that electrochemical changes caused by high-temperature are reversible. Two competing factors were identified that govern solid-state capacitor performance at elevated temperatures. |
| Databáze: | OpenAIRE |
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