Siemens, Wilhelm

In 1861, Charles Kirchoff in the United States proposed a cell comprising platinum electrodes immersed in a solution of Pb(N03)2 and Pb(CH3COO)2 [10]. At the same time, Wilhelm Siemens in Germany devised a secondary cell with carbon electrodes impregnated with lead salts and immersed in acid solution [11]. These, however, were rather curious attempts to create a novel secondary cell. 

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