Batteries

Scott Brons

Batteries are found everywhere! Found in

cell phones, computers, cars, ect. They have many sizes, shapes, and

functions. Each have a specific purpose along with pros and cons.

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How It Works What happens in a battery is this: Electrons go from the positive anode to the negative

anode creating a circuit.

On their way, they can pass through a wire to a light bulb (in this example).

The electrons pass through giving the bulb electricity.

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Dry-cell

These batteries are the most common and probably the simplest. We find them in appliances, remotes, and other small items.

These batteries are what completes their circuit and begin the flow of electrons.

Car Batteries

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These batteries are a bit more complex.

They actually consist of 6 batteries.

Each generating about 2 volts.

PbO2 + 4H+ + SO4-- + 2e-> PbSO4 + 2H2O

Pb + SO4-- -> PbSO4 + 2e- Those are redox

reactions!!

Lithium-Ion Batteries Found in laptops or phones. The anode in this type is carbon, which is

not unusual. What defines this type is the cathode: it is

made of lithium cobalt oxide. They are made of this because lithium can

hold lots of energy in atomic bonds. Pros: lightweight and efficient. Cons: very sensitive to extreme

temperatures, more expensive, and if failing they combust.

Implications. Why should we care?

Batteries are everywhere. Where can we find them?

The other option is either gas or electricity.

Surrounded by these inventions they directly impact our everyday lives.

Works Cited“How do batteries work?" How do batteries work? Ed. Qualitative

Reasoning 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 of Trustees at the

University 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 November 2006. HowStuffWorks.com. <http://electronics.howstuffworks.com/everyday-tech/lithium-ion-battery.htm> 28 April 2013.