Battery Batch » alkaline http://www.batterybatch.com Find a New Charge Sat, 06 Feb 2010 18:57:31 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Want to know whats in a alkaline battery? http://www.batterybatch.com/articles/want-to-know-what-is-in-a-battery.html http://www.batterybatch.com/articles/want-to-know-what-is-in-a-battery.html#comments Fri, 05 Feb 2010 03:43:01 +0000 admin http://www.batterybatch.com/?p=135 The alkaline battery can take the square or cylindrical form that we all know so well. The contents are contained safely within a steel casing. The cathode, which is the negative part of the battery, is a compressed mixture of manganese dioxide paste and carbon powder. The center of the cathode is hollow and lines with a conductive separator to prevent the cathode and anode materials from mixing, but allowing their varying electrical potentials to pass from one to the other. The anode is the positive part of the battery and contained within the center of the cathode. It’s a gel of potassium hydroxide and zinc powder.

]]> http://www.batterybatch.com/articles/want-to-know-what-is-in-a-battery.html/feed 1 The inside of battery AA http://www.batterybatch.com/articles/the-inside-of-battery-aa.html http://www.batterybatch.com/articles/the-inside-of-battery-aa.html#comments Sat, 24 May 2008 01:58:06 +0000 admin http://www.batterybatch.com/?p=123 The inside of battery like alkaline batteries, no matter the advertised claims, are little more than an enhancement of 19th Century carbon-zinc technology. The biggest change in chemistry is an alteration to the chemical mix in the electrolyte that makes it more alkaline (what did you expect?). This change helps to increase storage density and shelf life of the cells.

The construction (as opposed to chemistry) of alkaline cells differs significantly from ordinary carbon-zinc cells, however. Alkaline cells are effectively turned inside-out. The shell of the alkaline battery is nothing more than that–a protective shell–and it does not play a part in the overall chemical reaction. The anode of the cell is a gelled mixture of powered zinc combined with the electrolyte (itself a mixture of potassium hydroxide–a strong alkaline-and water), and the combination is linked to the negative terminal of the cell by a brass spike running up the middle of the cell. The cathode, a mixture of carbon and manganese dioxide, surrounds the anode and electrolyte, separated by a layer of non-woven fabric such as polyester. The figure below illustrates the construction of a Duracell alkaline battery.

inside of battery

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