Question

advantage and disadvantage of electrochemical double layer capacitor

Answer 1

The advantages:

1. Unlimited cycle life; as compared to the electrochemical battery, they are not subject to the wear or aging.

2. On-hand charge methods; no full-charge circuit required.

3. Quick charging times

4. Low impedance; by paralleling it with a battery, it enhances the pulse current.

5. Cost effective storage; a very high cycle count compensates the lower density.

The disadvantages:

1. Low energy density; usually holds 1/5-1/10 of a battery.

2. Cannot use the full energy spectrum for some applications.

3. Low voltage cells; to get higher voltages, serial connections are required.

4. Voltage balancing needed; when more than 3 supercapacitors are connected in series, the circuit needs a voltage balancing element.

5. High self-discharge as compared to electrochemical batteries

hope this help you