Batteries are found everywhere! Found incell phones, computers, cars, ect. They have many sizes, shapes, andfunctions. Each have a specific purposealong with pros and cons.QuickTime™ and adecompressorare needed to see this picture.QuickTime™ and adecompressorare needed to see this picture.QuickTime™ and adecompressorare needed to see this picture.
How It Works What happens in a battery is this: Electrons go from the positive anode to thenegative anode creating a circuit. On their way, they can pass through a wireto a light bulb (in this example). The electrons pass through giving the bulbelectricity.QuickTime™ and adecompressorare needed to see this picture.
Dry-cellThese batteries are the most commonand probably the simplest. We findthem in appliances, remotes, and othersmall items.These batteries are what completestheir circuit and begin the flow ofelectrons.
Car BatteriesQuickTime™ and adecompressorare needed to see this picture.QuickTime™ and adecompressorare needed to see this picture. These batteries are abit more complex. They actually consist of6 batteries. Each generating about2 volts. PbO2 + 4H+ + SO4-- + 2e->PbSO4 + 2H2O Pb + SO4-- -> PbSO4 + 2e- Those are redoxreactions!!
Lithium-Ion Batteries Found in laptops or phones. The anode in this type is carbon, which isnot unusual. What defines this type is the cathode: it ismade of lithium cobalt oxide. They are made of this because lithium canhold lots of energy in atomic bonds. Pros: lightweight and efficient. Cons: very sensitive to extremetemperatures, more expensive, and if failingthey combust.
Implications. Why should we care?Batteries are everywhere. Wherecan we find them?The other option is either gasor electricity.Surrounded by these inventionsthey directly impact oureveryday lives.
Works Cited“How do batteries work?" How do batteries work? Ed. QualitativeReasoning Group. Northwestern University, n.d. Web. 11 Apr.2013.<http://www.qrg.northwestern.edu/projects/vss/docs/power/2-how-do-batteries-work.html>.Holzman, David. "Electric Cars." Chem Matters Apr. 1993: 4-7.Print.Adam. "Q & A: Car Batteries." Q & A: Car Batteries. The Board ofTrustees at theUniversity of Illinois : Department of Physics, 22 Oct. 2007. Web.28 Apr. 2013. <http://van.physics.illinois.edu/qa/listing.php?id=567>.Brain, Marshall. "How Lithium-ion Batteries Work" 14 November2006. HowStuffWorks.com.<http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm> 28 April 2013.
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