6A Luk Pui Lam (7). Lead-acid accumulator Lithium battery charged A secondary cell is any kind of electrolytic cell in which the electrochemical reaction.

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Presentation transcript:

6A Luk Pui Lam (7)

Lead-acid accumulator Lithium battery charged A secondary cell is any kind of electrolytic cell in which the electrochemical reaction that releases energy is reversible. Unlike primary cells, secondary cells must be charged before use.

Lead-acid accumulator Diagrams and equations of the charging and discharging of a lead-acid cell. PS::::The reaction of lead and lead oxide with the sulfuric acid electrolyte produces a voltage.

starter ignition system It supplies power to the starter and ignition system to start the engine voltage stabilizer A car battery acts as a voltage stabilizer in the electrical system.

Lithium Battery Digital Camera Battery (rechargeable Li-polymer battery ) Cylindrical Li-ion Battery mobile phone Lithium ion battery from mobile phone

-high voltage, -long shelf life -high energy density Applications laptop computers, IC cards, electric clocks, watches, remote control keys, cameras, toys Applications include laptop computers, IC cards, electric clocks, watches, remote control keys, cameras, toys, etc. Rechargeable Lithium Button Battery

chemical reaction energy electric energy - directly transforms chemical reaction energy between hydrogen and oxygen into electric energy. Fuel Cell Anode side: 2H 2 => 4H + + 4e - Cathode side: O 2 + 4H + + 4e - => 2H 2 O Net reaction: 2H 2 + O 2 => 2H 2 O

fuel cell vehicle Fuel-Cell Powered Robot Toshiba direct methanol fuel cell Police pioneers with fuel-cell precinct Fuel Cell MP3 Player

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