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Energy Storage

Batteries Chemical super-capacitors

Dean Weller

on 5 May 2010

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Transcript of Energy Storage

ENERGY STORAGE Batteries Chemical Super-Capacitors A primary cell is any kind of battery in which the electrochemical reaction is not reversible A rechargeable battery (also known as a storage battery) is a group of one or more electrochemical cells Rechargeable battery Standard batteries Daniell cell The Daniell cell's theoretical voltage is 1.1 volts and the chemical reaction is

Zn(s) + Cu2+(aq) Zn2+(aq) + Cu(s). the chemical energy can be stored
in all element and is released normally
when heated to cause a reaction Electric double-layer capacitors pseudocapacitors Other names: Has the highest dielectric absorption of any type of capacitor. High self-discharge Disadvantages Advantages long life
extremely low internal resistance
rapid charging They work at lower voltages
than batteries with the same size and power
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