Remember the past of lead acid battery, look into the future
Obama invested some grant to advance the performance of lead acid battery, using lead-carbon electrodes for micro and mild hybrid applications. This investment in battery technology for electric vehicles proved that lead acid battery are never out of date and the researchers are still keeping bringing in new technology. He said, “Lead-acid batteries, which are used for transportation and stand-by applications, account for half of the rechargeable battery market. Although alternative battery chemistries are growing in popularity, such chemistries are not expected to diminish the demand for lead-acid. ”
Lead acid batteries have a bright future, and of course we should not forget its past. The first fully functional, commercially viable recombinant lead-acid products came on the market in the early 1970s. However, some of the principles necessary for such a technology were known long before this. For example, the gelling of sulfuric acid with silica was proposed in the late 1800s, and eventually led to the development of gelled-electrolyte lead-acid batteries. Gelled sealed cells were reportedly manufactured as early as 1934 by Elektrotechnische Fabrik Sonneberg in Germany, but apparently on a very limited basis.
Thomas Edison first proposed the principle of gas recombination within a battery in 1912; and over the next 60 years various attempts were made to commercialize this concept for the lead-acid couple. Most approaches were not successful because of excessive cost, bulk, and/or complexity—or they just did not work.
In the late 1960s, a number of prominent lead-acid battery companies had development programs directed toward producing a viable sealed battery, spurred by the successful commercialization of nickel-cadmium technology during the previous two decades. It was clear that the chemistries were very similar, but the key stumbling block was the amount of electrolyte necessary in the lead-acid system to realize acceptable discharge capacities and still have sufficient void volume within the cell to facilitate oxygen recombination. This dilemma was solved by the development of a glass microfiber separator, which has the ability to hold large quantities of electrolyte and, at the same time, has a porosity in excess of 90%. About 27 years ago, Gates came out with the first fully commercialized product line. Since then, dozens of other companies have followed suit, and, today, valve-regulated lead-acid (VRLA) batteries are recognized as a new, significant technology.
From the past to the present, I can’t imagine life without the lead acid battery. Lead acid batteries have myriad uses and are one of the most useful batteries with the longest life cycle, the greatest energy density per pound, and the most mature recycling infrastructure of similarly priced batteries. Has been used more than 140 years, these batteries are reliable, mature secondary batteries, globally manufactured and therefore a widely understood technology.
Source: http://leochbattery.blogetery.com/
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