High voltage electric double layer capacitor using a novel solid-state polymer electrolyte
| Autor: | Shoko Marukane, Takaya Sato, Hiroyuki Arafune, Yoshinobu Tsujii, Takashi Morinaga, Toshio Kamijo |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Energy Engineering and Power Technology High voltage Electrolyte Electric double-layer capacitor Polymer brush chemistry.chemical_compound chemistry Ionic liquid Fast ion conductor Electronic engineering Ionic conductivity Electrical and Electronic Engineering Physical and Theoretical Chemistry Composite material Leakage (electronics) |
| Zdroj: | Journal of Power Sources. 295:108-116 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/j.jpowsour.2015.06.116 |
| Popis: | We designed and fabricated a bipolar-type electric double layer capacitor (EDLC) with a maximum 7.5 V operating voltage using a new concept in solid electrolytes. A cell having a high operating voltage, that is free from liquid leakage and is non-flammable is achieved by a bipolar design utilizing a solid polymer electrolyte made up of particles in a three-dimensional array, such as crystals composed of 75 wt% of hybrid particles decorated with a concentrated ionic liquid polymer brush (PSiP) and 25wt% of an ionic liquid (IL). The resulting solid film had sufficient physical strength and a high enough ionic conductivity to function as an electrolyte. Solidification as well as ionic conduction is due to the regular array of PSiPs, thereby producing a high ion-conductivity from a networked path between cores containing an appropriate amount of IL as a plasticizer. The demonstration cell shows a relatively good cycle durability and rate properties up to a 10C discharge process. It also has a very small leakage current in continuous charging and better self-discharge properties, even at 60 °C, compared with conventional cells. This paper demonstrates the first successful fabrication of a bipolar EDLC in a simple structure using this novel polymer solid electrolyte. |
| Databáze: | OpenAIRE |
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