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Chemical Equilibrium

Chemical Equilibrium. 6A Luk Pui Lam (7). 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 Lithium battery.

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Chemical Equilibrium

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  1. Chemical Equilibrium 6A Luk Pui Lam (7)

  2. 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 • Lithium battery Secondary Cells used in daily life

  3. 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.

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

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

  6. Rechargeable Lithium Button Battery • highvoltage, • long shelf life • high energy density • Applicationsinclude laptop computers, IC cards, electric clocks, watches, remote control keys, cameras, toys, etc.

  7. - directly transforms chemical reaction energy between hydrogen and oxygen into electric energy. Fuel Cell Anode side:2H2 => 4H+ + 4e- Cathode side:O2 + 4H+ + 4e- => 2H2O Net reaction:2H2 + O2 => 2H2O

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

  9. Reference • http://en.wikipedia.org/wiki/Secondary_cell • http://www.batterycouncil.org/batteries.html • http://www.alibaba.com/countrysearch/HK-suppliers/Lithium_Battery.html • http://www.powerstream.com/Pli.htm • http://www.howstuffworks.com/fuel-cell.htm

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