Abstract
For electrochemical capacitor, the specific capacitance in positive is not equal to negative because of different sizes between cation and anion such as TEABF4/PC. In stacked-type of electrochemical capacitor, the optimized stacked-type cell generates gas 25% lower than current stacked-type cell. Our results show that H2 gas emitted from current stacked-type is twice that from optimized stacked-type; the proportion of CO in current stacked-type is similar to optimized stacked-type, while that of CO2 in optimized stacked-type is 73% of that in current stacked-type. The working voltages of the current stacked-type capacitor and optimized stacked-type are expected to be around 3.3V and below 3.0V, respectively, because the amount of gas emissions from optimized stacked-type is estimated to be 30% less than that from current stacked-type. And higher reliability is shown in optimized stacked-type with alkali activated carbon in positive and steam activation carbon in negative. The generated gas volume by optimized stacked-type with different carbon is decreased around 50% than current stacked-type electrochemical capacitor.
Original language | English |
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Pages (from-to) | 1123-1132 |
Number of pages | 10 |
Journal | Metals and Materials International |
Volume | 21 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2015 Nov 1 |
Bibliographical note
Publisher Copyright:© 2015, The Korean Institute of Metals and Materials and Springer Science+Business Media Dordrecht.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry