A typical symmetrical supercapacitor having carbon-based electrodes (activated carbon) in an aqueous electrolyte is shown here. Answer the following questions. 1. How does an electric double layer in a supercapacitor ensure higher capacitance than an electrostatic capacitor? 2. If activated carbon is coated with a thin layer of RuO2, will there be any effect on the performance of this supercapacitor? Why? 3. Potential has a significant role in increasing the energy density of the device (E= 1/2 CV2). How can working potential of this capacitor be increased? List any two approaches.
A typical symmetrical supercapacitor having carbon-based electrodes (activated carbon) in an aqueous electrolyte is shown here. Answer the following questions. 1. How does an electric double layer in a supercapacitor ensure higher capacitance than an electrostatic capacitor? 2. If activated carbon is coated with a thin layer of RuO2, will there be any effect on the performance of this supercapacitor? Why? 3. Potential has a significant role in increasing the energy density of the device (E= 1/2 CV2). How can working potential of this capacitor be increased? List any two approaches.
Chapter4: Mass Spectrometry: Part Two: Fragmentation And Structural Analysis
Section: Chapter Questions
Problem 3P
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Supercapacitor
A typical symmetrical supercapacitor having carbon-based electrodes (activated carbon) in an aqueous electrolyte is shown here. Answer the following questions.
1. How does an electric double layer in a supercapacitor ensure higher capacitance than an electrostatic capacitor?
2. If activated carbon is coated with a thin layer of RuO2, will there be any effect on the performance of this supercapacitor? Why?
3. Potential has a significant role in increasing the energy density of the device (E= 1/2 CV2). How can working potential of this capacitor be increased? List any two approaches.
4. If the capacitance of one electrode is 200F, calculate the capacitance of the entire supercapacitor.
Transcribed Image Text:Electrolyte
Electrolyte +
Collector
Collector
Separator
Electrical Double Layers
Activated carbon
Activated carbon
Structure of EDLC
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