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With reference to the supercapacitor, consider the following statements:
- It is an electrochemical charge storage device.
- It has a low power density and a short lifecycle.
Which of the statements given above is/are correct?
- a)1 Only
- b)2 Only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
With reference to the supercapacitor, consider the following statement...
**Answer:**
The correct answer is option 'A' - 1 Only.
Supercapacitors, also known as ultracapacitors or electric double-layer capacitors (EDLCs), are electrochemical charge storage devices that store energy using electrostatic principles rather than chemical reactions. They have specific features that differentiate them from conventional batteries and capacitors. Let's examine the given statements in detail:
1. **It is an electrochemical charge storage device.**
- This statement is correct. Supercapacitors are electrochemical devices that store and release electrical energy through reversible electrochemical reactions at the electrode-electrolyte interface. They utilize the principle of electrical double layer (EDL) capacitance to store charges.
- The electrochemical process involves the adsorption of ions from the electrolyte onto the surface of the electrode, forming an electrical double layer. The charge storage mechanism is primarily based on the physical separation of charges at the electrode-electrolyte interface rather than the transfer of charges between different chemical species.
2. **It has a low power density and a short lifecycle.**
- This statement is incorrect. Supercapacitors have a high power density, which means they can deliver high levels of power output in a short period. They are capable of rapid charge and discharge cycles, making them suitable for applications requiring burst power.
- While it is true that supercapacitors have a shorter lifecycle compared to batteries, their cycle life is much longer than traditional capacitors. The lifespan of a supercapacitor can range from thousands to millions of charge-discharge cycles, depending on the specific design and manufacturing quality.
In conclusion, statement 1 is correct as supercapacitors are indeed electrochemical charge storage devices. However, statement 2 is incorrect as supercapacitors possess a high power density and a longer lifecycle compared to traditional capacitors.
The correct answer is option 'A' - 1 Only.
Supercapacitors, also known as ultracapacitors or electric double-layer capacitors (EDLCs), are electrochemical charge storage devices that store energy using electrostatic principles rather than chemical reactions. They have specific features that differentiate them from conventional batteries and capacitors. Let's examine the given statements in detail:
1. **It is an electrochemical charge storage device.**
- This statement is correct. Supercapacitors are electrochemical devices that store and release electrical energy through reversible electrochemical reactions at the electrode-electrolyte interface. They utilize the principle of electrical double layer (EDL) capacitance to store charges.
- The electrochemical process involves the adsorption of ions from the electrolyte onto the surface of the electrode, forming an electrical double layer. The charge storage mechanism is primarily based on the physical separation of charges at the electrode-electrolyte interface rather than the transfer of charges between different chemical species.
2. **It has a low power density and a short lifecycle.**
- This statement is incorrect. Supercapacitors have a high power density, which means they can deliver high levels of power output in a short period. They are capable of rapid charge and discharge cycles, making them suitable for applications requiring burst power.
- While it is true that supercapacitors have a shorter lifecycle compared to batteries, their cycle life is much longer than traditional capacitors. The lifespan of a supercapacitor can range from thousands to millions of charge-discharge cycles, depending on the specific design and manufacturing quality.
In conclusion, statement 1 is correct as supercapacitors are indeed electrochemical charge storage devices. However, statement 2 is incorrect as supercapacitors possess a high power density and a longer lifecycle compared to traditional capacitors.
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With reference to the supercapacitor, consider the following statement...
Recently, scientists at Gujarat Energy Research and Management Institute (GERMI) have developed the thinnest, lightweight and biodegradable paper-based supercapacitor.
- A supercapacitor is an electrochemical charge storage device with a fast charging/discharging cycle, high power density and a longer lifecycle.
- Features
- This supercapacitor which can fully charge a device within 10 seconds, has been developed from seaweed (marine macroalgae).
- The device is of high tensile strength and performance, as well as cost-effective, according to the researchers.
- The product can be used in electronics, memory backup systems, airbags, heavy machines, electric vehicles, etc.; hence, it holds a huge business prospect.
What is Seaweed?
- Seaweeds are macroalgae attached to rock or other substrata and are found in coastal areas.
- They are classified as Chlorophyta (green), Rhodophyta (red) and Phaeophyta (brown) based on their pigmentation.
- Among them, Chlorophyta holds more potential components like carbohydrates, lipids, proteins and bioactive compounds in the cell wall.
- Green seaweed has a high amount of a particular type of cellulose in its cell wall.
Hence only statement 1 is correct.
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With reference to the supercapacitor, consider the following statements: It is an electrochemical charge storage device. It has a low power density and a short lifecycle.Which of the statements given above is/are correct?a)1 Onlyb)2 Onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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