Battery Chemistry - PowerPoint PPT Presentation

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Battery Chemistry

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Battery Chemistry Electrochemical Cells Cu2+(aq) + Zn(s) Cu(s) + Zn2+(aq) Electric Cars Chevy Volt: Charge uses 8 kWh of electricity to drive 40 miles ... – PowerPoint PPT presentation

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Title: Battery Chemistry


1
Battery Chemistry
Electrochemical Cells
Cu2(aq) Zn(s) ? Cu(s) Zn2(aq)
2
Electric Cars
  • Chevy Volt
  • Charge uses 8 kWh of electricity to
    drive 40 miles

Equivalent in miles per gallon
3
Is it worth it? Cost of Ch. Volt 40,000
Accord/Camry 25,000
4
Energy Density Burning Ethanol
  • CH3CH2OH 3 O2 ? 2 CO2 3 H2O ?G -1324
    kJ/mol

Energy per kg
5
Energy Density Lead Acid Car Battery
  • Pb PbO2 2 H2SO4 ? 2 PbSO4 2 H2O
  • n 4, Eo 2.05 V, F 96.5 kJ/V
  • ?G -nFEo

Energy per kg combined molar mass 643 g/mol
6
Goals for Battery Development
7
Battery Chemistry
Cu2(aq) Zn(s) ? Cu(s) Zn2(aq)
8
Eocell Eocathode - Eoanode
9
(No Transcript)
10
Common Batteries
11
(No Transcript)
12
Nickel Metal Hydride Batteries Anode Cathode
Alloy is a mixture of 1 part (lanthanum, cerium,
neodymium) and 5 parts (nickel, cobalt,
manganese, aluminum)
13
Lithium Ion Batteries Anode LiCoO2 ? Li1-xCoO2
x Li x e- Cathode x Li x e- C ? LixC
14
Fuel Cells
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