2. 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.
QuickTime™ and a
decompressor
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QuickTime™ and a
decompressor
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QuickTime™ and a
decompressor
are needed to see this picture.
3. 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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decompressor
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4. 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.
5. Car Batteries
QuickTime™ and a
decompressor
are needed to see this picture.
QuickTime™ and a
decompressor
are needed to see this picture.
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!!
6. 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.
7. 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.
8. 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.