20 Dec '11, 1pm

Car Battery (Lead) Mystery: Most people just accept that a car battery works. However, to a chemist it is a per...

Car Battery (Lead) Mystery: Most people just accept that a car battery works. However, to a chemist it is a per...

Most people just accept that a car battery works. However, to a chemist it is a perplexing mystery because the prime ingredient (lead oxide) should be an insulator. Chemists have solved the 150 year-old mystery of what gives the lead-acid car battery its unique ability to deliver a surge of current. Lead-acid batteries are able to deliver the very large currents needed to start a car engine because of the exceptionally high electrical conductivity of the battery anode material, lead dioxide. However, even though this type of battery was invented in 1859, up until now the fundamental reason for the high conductivity of lead dioxide has eluded scientists.

Full article: http://www.enn.com/enn_original_news/article/43743

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