Week 5 Challenge

Q1)

Ultra capacitors are the perfect choice for the mentioned scenario than batteries.

since frequent breaking and accleration requires immediate/ instant power we have to go with option that is offering high power density in our case it is ultra capacitors. They can also charge quickly during regenerative breaking.

Batteries have high energy density comparitively but in this case UC suits the best.

Q2)

1) Lead acid battery   2.1V, 20-70Wh/Kg

2) Nickel cadmium battery 1.2V  40-100Wh/Kg

3) Nickel Metal hydride battery 1.25V  70-150Wh/Kg

4) Lithium ion (cobalt based) battery    3.6V  120-230Wh/Kg

5) Ultra Capacitor      3.4V  50-206Wh/Kh

Q3)

 

 Q4)

True,

the marked 1 in the image is negative electrode.

Ions move from positive electrode tho negative electrode through the seperator and electrons move from negative to positive electrode through the load/external wires