Page 80 - Electrician - TT (Volume 1)

ELECTRICIAN - CITS

Reactions:
At anode
Charge
Cd(OH) + 2e Cd + 2OH -
-
2
Discharge
At cathode
Charge
Ni(OH) + OH NiOOH + H O + e -
-

2
2
Discharge
Over all reaction
Charge
Cd(OH) + 2Ni(OH) 2NiOOH + 2H O
2
2
2
Discharge
Advantages
• Fast and simple charge
• Good load perfomance
• Smaller and lighter

• Long life than lead acid cell
• It can be packed in a sealed container
Applications
• Calculator

• Electronic flash unit
• Cord less appliances

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CITS : Power - Electrician & Wireman - Lesson 13-19 CITS : Power - Electrician & Wireman - Lesson 13-19