Microsoft PowerPoint - Chapter 8 Lecture1

Microsoft PowerPoint - Chapter 8 Lecture1 - Chapter 8:...

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Chapter 8: Energy from Electron Transfer In his 2006 State of the Union address, President George W. Bush proclaimed “. . . we are addicted to oil” Are we doomed as a country to go on to the bitter end in terms of our addiction to oil? Energy from Electron Transfer • We depend on energy from electron transfer in almost everything we do except driving • Think about it – cell phones, hearing aids, calculators, laptops, remotes, car keys, garage door openers, video cameras, radios, and on and on • This approach to utilizing energy will only increase in the future Energy Transfer from Electrons • The use of energy from electon transfer will only increase going forward • It is a clean, inexpensive source of energy • In other forms, such as fuel cells on the space station and hybrid automobiles, the use of electron energy transfer is already growing quickly Energy Transfer from Electrons • The use of energy from electrons is increasing because this form of power is only one of many in the quest for plentiful, clean, inexpensive power • Electron transfer is only one of many energy possibilities that free markets are scrutinizing • What about fossil fuel energy? Energy Transfer from Electrons • How about power from the sun – solar energy, which involves electron transfer • And there’s power from burning fuels other than fossil fuels – like H 2 for example • Hybrid energy forms also rely on energy from electron transfer • Energy from electron transfer is contained in batteries… 8.1 electrons, Cells, and Batteries: The Basics
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8.1 electrons, Cells, and Batteries: The Basics • Interesting to note what Thomas Edison said about batteries: Batteries are doomed to failure, such a device is “…a sensation, a mechanism for swindling the public by stock companies,…”, and although such batteries were scientifically all right, their commercial success would be “…as absolute a failure as one can imagine.” Hey Tom, stick to inventing. Your skills at judging the future need some work! What is a Battery? • A battery is a “galvanic cell” • A galvanic cell is: a device that converts the energy released in a spontaneous chemical reaction into electrical energy • An actual battery is a collection of several galvanic cells wired together. • Your car battery is made like this
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This note was uploaded on 11/08/2009 for the course CH 53455 taught by Professor Rowland during the Fall '09 term at University of Texas at Austin.

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Microsoft PowerPoint - Chapter 8 Lecture1 - Chapter 8:...

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